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NAD C 388 BluOS-2i

Stereo integrated amplifier with built-in BluOS™ streaming, Apple AirPlay® 2, and Bluetooth®

Item # 745C388B2I

At 150 watts per channel, NAD's C 388 BluOS-2i integrated amplifier fills your room with detailed, virtually...

At 150 watts per channel, NAD's C 388 BluOS-2i integrated amplifier fills your room with detailed, virtually...

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Item # 745C388B2I

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About the NAD C 388 BluOS-2i

Eric A.

Power and flexibility

At 150 watts per channel, NAD's C 388 BluOS-2i integrated amplifier fills your room with detailed, virtually distortion-free sound and brings out the best in all your music. Bluesound's proprietary BluOS operating system lets you enjoy lag-free multi-room wireless music, and Apple AirPlay 2 (via future firmware update) lets you stream directly from an iPhone® or iPad® and ask Siri to play Apple Music.

Power and flexibility

At 150 watts per channel, NAD's C 388 BluOS-2i integrated amplifier fills your room with detailed, virtually distortion-free sound and brings out the best in all your music. Bluesound's proprietary BluOS operating system lets you enjoy lag-free multi-room wireless music, and Apple AirPlay 2 (via future firmware update) lets you stream directly from an iPhone® or iPad® and ask Siri to play Apple Music.

Connect digital or analog music sources and stream music via Bluetooth from your computer or a compatible mobile device. NAD's smart, future-proof Modular Design Construction (MDC) lets you upgrade the C 388 to include features like 4K video pass-through.

Clean amplification for your speakers and headphones

The C 388 uses an advanced Class D amplifier design for consistent performance. Its highly efficient power supply provides a noise-free foundation, generating huge power with negligible distortion — up to 1,000 watts instantaneously to faithfully reproduce the energy and excitement of all your favorite music. A built-in high-performance headphone amplifier can drive even the most demanding studio monitor headphones.

A free app with advanced control options

Operate your system via Wi-Fi® using the BluOS Controller app with your Apple® or Android™ device, or your Windows® or Mac® computer. It gives you flexible control over your music system, letting you access, control, and stream music to different BluOS-enabled zones. Synchronize multiple audio zones, or stream different music to different zones at the same time. You can even use your Apple Watch to control your system.

A wealth of high-resolution streaming options

BluOS can send 24-bit high-res music to any room in your home, without any loss of sound quality. Stream music from your personal library or from internet streaming services. The selection of supported services — including TIDAL, Qobuz, Spotify®, and Rhapsody®, among others — is one of the most impressive we've seen.

Innovative customization options

Two MDC upgrade slots let you add or swap modules on the back of the unit so you can tailor the C 388 to your exact needs. One slot has NAD's BluOS-2i module pre-installed, while the remaining slot is available for customization and expandability.


Product highlights:

    • 150 watts x 2 channels into 8 or 4 ohms (20-20,000 Hz) at 0.009% THD
    • 4-ohm stable for use with a wide range of speakers
    • Class D Asymmetrical PowerDrive amplifier design
    • connects to your home network via wired Ethernet or Wi-Fi for music streaming
      • includes support for Spotify, Deezer, TIDAL, Qobuz, Amazon Music, Napster and Calm Radio
      • free internet radio from TuneIn Radio and iHeartRadio
    • Apple® AirPlay® 2 lets you stream directly from an iPhone® or iPad® and ask Siri to play Apple Music (via future firmware update)
    • BluOS compatibility for further expansion with Bluesound wireless speakers
      • free BluOS controller app for iOS®, Android, Windows, and Mac OS X
    • compatible file types: MQA, MP3, AAC, WMA, OGG, WMA-L, FLAC, ALAC, WAV, and AIFF
    • 24-bit/192kHz digital-to-analog converter for high-performance playback of digitally connected sources such as a CD player
    • built-in Bluetooth for wireless music streaming from a compatible device or wireless headphone listening
      • supports the aptX® codec for wirelessly streaming CD-quality sound
    • independent built-in high-output headphone amplifier
    • 2 MDC (Modular Design Construction) slots for adding additional capabilities and features (one slot has the pre-installed BluOS module)
    • remote control
    • compatible with leading third-party control systems like Control4, Crestron, RTI, and URC
    • Ethernet port for wired connection to a home network
    • USB (Type A) input for connecting USB thumb drives and compatible external hard drives
    • second USB (Type A) input for connecting included Wi-Fi dongle
    • USB mini (Type B) input for service only
    • 4 digital audio inputs (2 optical/2 coaxial)
    • 3 stereo RCA audio inputs, including a phono input (for use with a moving magnet cartridge)
    • stereo RCA preamp output for connecting a separate amplifier or powered subwoofer
    • RS-232C port for use with external controllers
    • IR in/out and 12-volt triggers
    • full-size headphone jack
    • 2 pairs of binding post speaker connectors for A and B speakers
    • detachable power cord

    What's in the box:

    • Hybrid Digital DAC Amplifier
    • 6' AC power cord
    • MDC BluOS 2i module (pre-installed)
    • 2 Antennas
    • Remote control (SR 9)
    • 2 "AA" batteries
    • USB/WiFi dongle
    • Antenna
    • 41" USB extension cable
    • Quick Setup Guide
    • Mounting Instructions
    • Warranty Information

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    More details on the NAD C 388 BluOS-2i

    Stacey B.

    Features & specs

    Performance Specs
    Watts RMS per Channel (8-ohms) 150
    Watts RMS per Channel (6-ohms) Not given
    Watts RMS per Channel (4-ohms) 150
    Frequency Bandwidth 20-20k
    THD 0.009%
    Minimum Impedance 4 ohms
    Amplifier Class D
    Signal to Noise Ratio 95
    DAC Bit Depth 24-bit
    DAC Sample Rate 192 kHz
    Digital Music Features
    Built-in DAC (Digital to Analog Converter) Yes
    Bluetooth Built-in 4.0
    Wi-Fi 802.11n
    Total Analog Inputs 2
    Phono Input Yes
    Optical Digital Inputs 2
    Coaxial Digital Inputs 2
    USB Input Yes
    Preamp Outputs Stereo RCA
    Recording Output No
    Home Theater Bypass No
    Pre-out/Main-in Loop No
    Headphone Output 1/4"
    Removable Power Cord IEC 3-prong
    Streaming Compatibility
    Apple AirPlay Yes
    Apple AirPlay 2 Yes
    DTS Play-Fi No
    Chromecast built-in No
    Roon Ready
    HEOS No
    BluOS Yes
    Dimensions and Warranty
    Width (inches) 17-1/8
    Height (inches) 4-3/4
    Depth (inches) 16-5/8
    Weight (pounds) 24.75
    Parts Warranty 2 Years
    Labor Warranty 2 Years
    The NAD C 388 BluOS-2i replaces these items:

    Product Research

    Audio Section
    Variety of Sources
    Wireless Network & Multiroom Audio
    Remote, App, & Voice Control

    Audio Section

    Hybrid Digital Amplification: NAD has moved away from the old-fashioned power-hungry linear power supplies and Class AB output stages that waste nearly half of the energy consumed and produce heat rather than sound. Instead, NAD has developed even better performing circuits based on switch mode power supplies and Class D output stages. Once thought to be inferior to traditional topologies, this new Hybrid Digital Amplifier design is very linear over a wide bandwidth and provides consistent performance into all speaker loads, providing a dramatic advancement over previous Class AB and Class D amplifier designs.

    • Customized Hypex UcD Output Stage: The C 388 BluOS 2i uses a customized version of the proven Hypex UcD output stage operating in a fully balanced bridge configuration. This allows for massive power with nearly un-measurable distortion and noise in the audible range. Every detail of this design has been carefully planned and perfectly executed to deliver every last drop of performance.
    • Sophisticated Power Supply: The C 388 BluOS 2i's power supply is capable of 200 watts continuously and over 600 watts instantaneously to allow for short-term musical transients. It can operate with any AC mains voltage from 100 to 240 volts and provides pure DC power to all the various stages of the C 388 BluOS 2i. This highly efficient supply also provides near perfect regulation of voltage across a wide range of conditions and provides a solid noise-free foundation for the amplifying stages.

    Full Disclosure Power (FDP): NAD uses Full Disclosure Power (FDP), the most demanding criterion for performance measurement. FDP specifies distortion under the most extreme conditions of low impedance loads and frequency extremes, rather than the simple and easy 1kHz @ 8 ohms test quoted by many of other manufactures. NAD uses this stricter performance criterion because it more closely matches the demands of real music and real loudspeakers. Maintaining specified distortion at 4/8Ω and at 20-20kHz is a much more difficult achievement. The benefit of NAD's Full Disclosure Power is the total elimination of audible distortion at any listening level. This provides pinpoint imaging and realism with music and movies alike.

    • Continuous Power: 150 watts x 2-channel (@ 20-20kHz, into 4Ω or 8Ω, at 0.009% THD, with both channels driven)
    • IHF Dynamic Power: 400W into 2Ω / 350W into 4Ω / 250W into 8Ω

    Binding Post Speaker Outputs: The amplifier features A & B speaker terminals to power two pair of loudspeakers. The speaker terminals consist of eight binding posts that will accept single banana plugs (single only), pin connectors, spade lugs, and bare wire (up to 10AWG). The amplifier supports 4Ω speakers when only one pair is connected, however, when two pair of speakers are connected a minimum impedance of 8Ω is recommended.

    Discrete Headphone Amplifier: The NAD C 388 BluOS 2i incorporates a discrete headphone amplifier with low output impedance and very high output voltage capability, enough to drive even high impedance studio monitor headphones. Connecting a set of headphone to unit's front-panel 1/4" jack will mute the speaker outputs. Volume, tone, and balance controls are all operable during headphone listening.

    Line Outputs: The C 388 BluOS 2i features a low impedance line-level stereo output that can connect to another other amplifier or powered subwoofer to extend the hybrid digital DAC amplifier's versatility.

    Tone Control: The NAD C 388 BluOS 2i hybrid digital DAC amplifier lets you adjust Bass (60Hz) & Treble (20kHz) from -7 to +7dB, as well as Balance between the left & right speakers (L10 to R10).

    Filters: Filters provide easy bi-amplification or subwoofer integration by adding the required filters to redirect bass frequencies to the subwoofer. Select High Pass or Full Range. When High Pass is selected, low pass audio signals within the 40Hz to 200Hz are sent to the C 388 BluOS 2i's subwoofer preout and high pass audio signals are sent to the C 388 BluOS 2i's amplifier section and speaker outputs. Select Full-Range to deliver audio signals with the whole frequency spectrum to the C 388 BluOS 2i's amplifier section and speaker outputs.

    Variety of Sources

    Bluetooth w/ aptX: The NAD C 388 BluOS 2i integrated amplifier features built-in Bluetooth 4.0 with support for wireless music streaming from your Bluetooth-enabled smartphone, table, laptop, or desktop computer. You'll be able to stream stored music and music apps on your Bluetooth source device to your compatible NAD digital integrated amp or digital preamp. In addition, the MDC BluOS 2i module offers aptX for "CD-quality" (44.1kHz/16-bit) sound from Bluetooth aptX compatible source devices (such as Android smartphones & tablets). You can even distribute Bluetooth audio to the rest of your Bluesound wireless audio system throughout your home or office over WiFi.

    Note: The included antennas (for Bluetooth) must be installed on back of the NAD C 388 BluOS 2i.

    Dual USB-A Ports: The C 388 BluOS 2i features two USB (type-A) ports to directly connect your USB mass storage class (MSC) device; such as a thumbdrive or external hard-drive. The unit's USB ports support music playback from these compatible USB devices formatted in FAT 32. Not only can USB audio be played back on your compatible NAD digital integrated amplifier or digital preamplifier, but can also be wirelessly distributed to the rest of your Bluesound components throughout your home for multiroom playback. The USB ports are not compatible with the direct connection of an Apple iPod/iPhone/iPad or Android devices.

    Note: There is also a mini-USB (type-B) port that is used for service purposes only (not for consumer use). Only authorized service personnel can access this USB port.

    Digital Inputs: The NAD C 388 BluOS 2i is equipped with two optical (toslink) digital inputs and two coaxial (RCA) digital inputs. These digital inputs will support 2ch PCM audio up to 24-bit/192kHz (not compatible with Dolby Digital/DTS).

    Analog Inputs: The NAD C 388 BluOS 2i's stereo RCA inputs (2 Line/1 Phono) can accommodate all kinds of analog source components by offering ideal input impedance characteristics with linear ultra-low-noise buffer amplifiers to prevent any sonic degradation caused by inappropriate loading of the source device.

    MM Phono Stage w/ RIAA Equalization: The NAD C 388 BluOS 2i hybrid digital DAC amplifier includes an MM Phono stage with precisely accurate RIAA equalization, high overload margins, extremely low noise, and an innovative circuit to suppress infrasonic noise that is present on all LPs - all without affecting bass response.

    Modular Design Construction (MDC): Modular Design Construction (MDC), an exclusive feature of NAD, allows you to customize the NAD integrated amplifier with additional capabilities and features, now or in the future. One available MDC slot can accommodate a single MDC module (sold separately).

    • 4K HDMI Module The MDC HDM-2 (745HDM2, sold separately) adds HDMI capability with three HDMI inputs and one HDMI output for video pass-through. Based on the latest 6GHz HDMI chip, the MDC HDM-2 includes full support for UHD (4K) video pass through to a video monitor, plus support for 24-bit/192kHz 2Ch PCM (not compatible with Dolby Digital/DTS).
    Note: These MDC modules are all sold separately (not included with the C 388 BluOS 2i). You can add only one MDC module.

    Wireless Network & Multiroom Audio

    Wired or Wireless Network Connection: The NAD C 388 BluOS 2i can connect to your home network and Internet provider via a hardwired Gigabit Ethernet (RJ-45) jack connector or wireless WiFi (802.11 b/g/n) connection. Either network/internet connection allows you to stream music from internet radio, select online music services and stored music libraries on your network using BluOS.

    Note: The included USB/WiFi dongle must be plugged into one of the USB ports on the C 388 BluOS 2i. If wireless connectivity is poor connect the USB/WiFi dongle to the supplied 2' USB extension cable for better signal.

    BluOS Wireless High-Resolution Multiroom Audio: The NAD C 388 BluOS 2i comes with NAD's MDC BluOS 2i module pre-installed, making it a part of the BluOS wireless high-resolution multiroom audio eco-system - consisting of powered speakers, soundbar speakers, amplifiers, players, and hard-drives. The BluOS wireless high-resolution multiroom audio ecosystem uses your home's wired or wireless network to connect multiple Bluesound products and play your music in perfect sync, or different music simultaneously, anywhere in your home. BluOS can wirelessly transmit lossless music up to 24-bit/192kHz at ultra-fast speeds with no lag and zero loss in sound quality.

    • Compatible Multiroom Audio Sources: The following audio sources can be used for multiroom audio playback - internet radio (including TuneIn & iHeart Radio); online music services (including Tidal, Spotify, Amazon, Deezer, Slacker, and Napster); Bluetooth & USB audio, plus music libraries (from computers and NAS drives).*NAD components using the BluOS MDC are unable to share their analog or digital inputs with other BluOS devices due to hardware limitations..
    • Number of BluOS Zones: Up to 16 Bluesound devices can be connected in a strictly wireless environment. Demonstrated practice has shown that you can create up to 8 groups of 8 Bluesound devices or 4 groups of 16 Bluesound devices. If you want to connect more than 16 Bluesound devices, you will need to connect the Bluesound devices to your network using a wired connection. BluOS can then control up to 64 devices in a strictly wired environment.
    Note: Make sure the NAD C 388 BluOS 2i has the latest BluOS software and firmware update installed.

    High Resolution Audio: High-resolution audio tracks are either 24-bit/96kHz or 24-bit/192kHz, and contain up to 6.5x more data than standard CDs, letting you hear all the detail of your favorite music in superior quality. With full support for hi-res audio, you can stream WAV, FLAC, ALAC, AIFF, WMA-Lossless, MQA music files over your home's WiFi network or directly from a connected USB mass storage class device. Bluesound also supports compressed music files such as MP3, AAC, WMA and OGG. Bluesound has been designed to work with today's larger music collections, and has indexed libraries up to 200,000 songs in demonstrated practice (this will depend on the music's metadata & artwork). Bluesound also offers gapless playback by default for all supported file music types.

    Compression File Type Sampling Frequency Bit Rate or Bit Depth
    Compressed Lossy MP3 16-48kHz 192-320 kbps
    Lossless WMA-Lossless up to 96 kHz up to 24-bit
    FLAC 192 kHz up to 24-bit
    Uncompressed AIFF up 192 kHz up to 24-bit
    Notes: Bluesound cannot index or play AAC files with the extension ".m4p". These files were purchased in iTunes prior to 2009 and are subject to copy protection. Apple Consumers with an iTunes Match subscription can delete and re-download these files free of charge from their iTunes Cloud

    Master Quality Authenticated (MQA): The NAD C 388 BluOS 2i will playback and decodes MQA content from BluOS network audio sources. Master Quality Authenticated (MQA) is a revolutionary end-to-end technology built into the NAD C 388 BluOS 2i that captures and delivers master quality audio. The C 388 BluOS 2i includes a powerful decoder and audio renderer for the MQA system. This ensures that MQA-encoded audio files sound exactly like the source. MQA indicators are both shown on the front-panel display of the BluOS Streaming DAC and in the BluOS app on your compatible Apple iOS or Android OS device.

    Online Music Services: Many popular music streaming services and internet radio apps are built right into BluOS, giving you an all-access pass to millions of songs and the freedom to listen to everything you want to hear. Using the BluOS Controller app, you can instantly discover and enjoy millions of songs from your existing music services, tune in to your favorite internet radio stations and podcasts from around the world, or access and listen to the music collections stored on your smartphone, tablet or laptop on any and Bluesound in your home. Subscription and purchase fees will apply to online music services.

    • Amazon Music: Listen to millions of songs, thousands of playlists, and ad-free personalized stations with Amazon Prime & Unlimited Music. With the addition of Amazon Music HD, you will now be able to play Ultra HD music (24-bit/48kHz to 192kHz) on supported Bluesound devices from the BluOs App when choosing Amazon Music. An Amazon Music (Prime, Unlimited, or HD) subscription will be required
    • Spotify Connect: If you subscribe to a free or paid Spotify subscription and have the Spotify App on your Apple iOS or Android smartphone, you can stream Spotify to the Bluesound system using Spotify Connect. Spotify is a digital music service that gives you on-demand access to one of the largest music libraries in the world (over 15 million tracks and counting). Spotify makes it easier than ever to discover, manage, and share music with your friends. You can browse music by artist, album, track, or most popular; and create your own music library with customized playlists.
    • TIDAL Connect: The integration of Tidal Connect will enable Tidal users to instantly select and wirelessly stream music to the Bluesound device from within the Tidal app (for Apple iOS and Android OS). TIDAL is a global streaming service that offers over 30 million songs in high-fidelity CD sound quality. TIDAL has two pricing tiers; either $9.99 or $19.99 a month. Both pricing levels allow you to access TIDAL's entire music library. The $19.99 tier has the added benefit of high-fidelity sound at CD-level quality.
    • Qobuz: Qobuz offers the biggest catalog of Hi-Fi and Hi-Res albums in the world, both for new releases and specialized genres. For hundreds of thousands of albums, Qobuz includes all the information you need to recreate the appeal of a real CD - the names of musicians, producers, lyrics (everything you need to know to appreciate your favorite albums). Qobuz offers MP3, CD, and Hi-Res quality subscriptions.
    • SiriusXM: SiriusXM Internet Radio is accessible through the BluOS app and lets you listen to over 120 channels of commercial-free music, talk radio, news, sports, entertainment, and more. Subscription fees will apply.
    • TuneIn: The Bluesound system includes access to more than 70,000 free internet radio streams from all corners of the globe via the TuneIn internet radio service. Just select the TuneIn logo from the main Music menu and browse among the 70,000 stations neatly organized into popular categories and select a station that appeals to your mood.
    • iHeart Radio: iHeart Radio is a free, all-in-one digital radio and music streaming service that lets you listen to thousands of live stations from across the country and allows you to create personalized custom stations featuring songs from the artist you select and similar music.
    • Napster: Napster is a streaming music subscription service (starting a $10 per month) that allows you to play the full-length songs you choose on demand from a collection of over 10 million songs, without ads and without having to purchase or download the music.
    • Slacker: Get the sound quality that you deserve with the new Slacker music library available in high-quality AAC audio on Bluesound. Listen to music streams at a bitrate of 320kbps and enjoy all your favorite Slacker stations in pristine MP3-quality.
    • Deezer: Deezer lets you explore over 53 million tracks (and counting), and discover artists and tracks you'll love with personalized recommendations from the Deezer Editors. Bluesound even supports Deezer HiFi for lossless quality ($19.99 per month).
    • Other Services: Other online music services include HighResAudio, Murfie, JUKE, KKBox, SoundMachine, and more.
    Note: Availability of online music services may vary by region. Not all services may be available at time of purchase. Some services may be added or discontinued from time to time based on decisions of the music service providers or others.

    Computer Audio: BluOS lets you easily connect and share your music collection from a computer or network-attached storage drive and access up to 200,000 tracks for wireless streaming. The BluOS wireless music system will pull music from an existing digital music library across the network on your Windows PC, Mac computer, or NAS drive using Windows or SMB File Sharing (SAMBA) and the BluOS Controller app for Windows (XP-up) & Mac (OS X 10.7-up). However, File Sharing is not enabled by default on Windows or Mac. You will have to manually alter these settings in your computer's menu system.

    AirPlay 2: The NAD C 388 BluOS 2i will support AirPlay 2 through an available irmware update. With AirPlay 2, you'll be able to stream just about any sound (including music, books, podcasts and more) from your iPhone, iPad, or Mac to the Bluesound system - all in sync. You can even watch movies and videos from Netlfix or YouTube on your Apple device while streaming the audio through to the Bluesound system. AirPlay 2 also gives you more options for control, including using Siri voice assistance. If you are an Apple Music subscriber and add the Node 2i to the Apple Home App on your iPhone or iPad, you can use your iOS device or HomePod to say things like - "Hey Siri, play jazz in the Living Room" or "Hey Siri, turn up the volume in the Kitchen." You can even group Gen 2i Bluesound products with older Bluesound products in the BluOS App to add AirPlay 2 compatibility to your entire BluOS system.

    Roon Ready: Roon Ready network devices (such as Bluesound and NAD) have Roon's streaming technology built-in, and are certified by Roon Labs to provide the highest level of quality and performance in network streaming. Roon is a feature rich music library and playback application that compiles all the music files available to your network and makes them easily available to play across all other Roon enabled audio devices in your home. Roon manages digital music files (including FLAC, WAV, AIFF, ALAC, DSD, and MQA) collected on hard drives and networked storage. It can also watch your iTunes library, and optionally integrate with the Tidal and Qobuz music streaming services. Roon is available for mobile, laptop or desktop devices. When you open the Roon app, it will display your complete audio library together with its metadata and artwork along with all the Roon enabled devices around your house. Simply select the music you wish to play and the Bluesound product or other Roon device in which you want to hear it on.

    Note: To use Roon you will need a Roon Core running on the same network as the Bluesound product. The Core is media server software that runs on your computer, NAS, or turnkey appliance (like Nucleus or ROCK - sold separately), located on the network within your home.

    Remote, App, Voice Control

    BluOS Controller App: The free BluOS Controller app (for Apple iOS 9.3-up, Android OS 4.1-up, Windows XP-up, and Mac OS X 10.7-up) turns your mobile device or computer into a full-featured wireless remote control for the NAD C 388 BluOS 2i and the BluOS wireless multiroom audio system. The BluOS Controller app on your compatible device uses your home's WiFi network to connect with Bluesound devices, so you can play all the music you love anywhere in your home for a wireless multiroom music experience. Get on-demand access to your music libraries on your home network, stream live Internet radio from almost any place in the world, or listen to one of the many music services available on Bluesound, all from the palm of your hand with the easy-to-use BluOS Controller app.

    • Multiroom Audio: Play a different song at the same time in different rooms, or group all your BluOS enabled devices together and listen to your favorite music in perfect sync throughout your home.
    • Now Playing Screen: Control your music and adjust the volume in any room, get rich album artwork and detailed artist info, right from the Now Playing screen. Even check what quality you are streaming at to ensure the best possible listening experience.
    • Individual Songs & Playlists: Tap a song and have it play instantly, or create and edit playlists on the fly by simply adding songs or entire albums to the play queue. Playlists can then be saved inside the app and listened to at any time.

    Alexa & Google Assistant Voice Control: The NAD C 388 BluOS 2i will support Amazon Alexa and Google Assistant voice control through an over-the-network firmware update (now available). Using an Amazon Alexa or Google Assistant enabled device (sold separately - see Accessories Tab), you can use your voice to access your music libraries on your local network, select presets from online music services, control music playback functions such as Play/Pause/Skip, adjust volume levels, play music in different rooms, and even group rooms together. Each Alexa voice command will need to start with the phrase "Alexa or Google, ask Blue Voice to" or "Alexa or Google, tell Blue Voice to". Alexa and Google Skills for BluOS will need to be setup through the Amazon Alexa app (for Apple iOS 11.0+ or Android OS 4.4+) or the Google Home App (for Apple iOS 11.0+ and Android OS 5.0+ ).

    • The Bluesound device does not feature a built-in microphone and requires a separate Alexa or Google Assistant enabled device (sold separately - see Accessories tab) for voice control.
    • Click here for more information regarding Alexa setup and voice commands. Click here for more information regarding Google Assistant setup and voice commands.

    NAD Remote App: Power, volume, source selection, and device settings are all controlled using the intuitive interface of the NAD Remote App (for Apple iOS 9.0+ and Android OS 5.0+) from your compatible Apple iOS or Android OS device.

    IR Remote: The included IR remote control handles the key functions of the C 388 BluOS 2i. The IR remote can also be used to directly command other NAD products that respond to applicable common remote control codes. This includes other NAD Stereo Receiver, Integrated Amplifier, and Preamplifier models. It has additional controls to remotely operate NAD CD Players, AM/FM Tuners, and dedicated AM/FM/DB Tuners. It will operate up to a distance of 23'. The remote requires two "AA" alkaline batteries (included).

    Remote Connections: The NAD C 388 BluOS 2i is fitted with a 12V trigger input/output, an IR input/output, and a RS-232 port for custom integration and advanced remote connectivity

    • 12V Trigger In/Out: The +12V trigger output (3.5mm) lets you turn on/off another device along with the C 388 BluOS 2i. The integrated amp can also be turned on/off by another device using the +12V trigger input (3.5mm).
    • IR In/Out: The IR input (3.5mm)is used to control this unit using an optional infrared repeater or the IR output of another component. The IR output (3.5mm) can be used for control of another NAD component.
    • RS-232 Port: The RS-232 port allows connection to a compatible PC or external whole-house control system. NAD is a certified partner of Control4, Crestron, RTI, URC, AMX, Savant, & Elan.

    Auto Standby: The C 388 BluOS 2i can be setup to automatically go into standby mode if there is no user interface interaction and no active source input for 30 minutes.

    Auto Sense: The Auto Sense feature enables the C 388 BluOS 2i to wake up from standby mode when triggered by an active source input with an audio signal.

    Loading accessories...

    Customer Q&A

    10 questions already asked

    Can you connect AVR to this and use to drive front speakers ( Home theater bypass)?
    [ Chris  Jun 25, 2022 ]
    1 answer
    Greetings Chris, and thank you for your question. The NAD C388 BluOS does not offer a Home Theater bypass, or direct in.
    [ THOMAS  Jun 25, 2022 ]  Staff
    Can you play music off a usb stick?
    [ John John  Sep 14, 2021 ]
    5 answers
    Yes! I've made whole song lists on a stick and plug them right in! Fantastic product!
    [ Elizabeth  Sep 14, 2021 ]
    I don't think so. There is no USB port on the front of the NAD.
    [ Rudolph  Sep 14, 2021 ]
    Your supposed to. But I downloaded all of mine, to a flash drive, I have not been able to play it, I have not found help with this yet iether.
    [ MICHAEL D  Sep 14, 2021 ]
    Yes. There is a USB drive that supports sticks and NAS drives.
    [ GERALD  Sep 14, 2021 ]
    Yes. I've got my external hard drive connected via USB. It works wonderfully well.
    [ Coleman  Sep 14, 2021 ]
    I have audioquest type 8 speaker cables with spade termination.....Are speaker post big enough?
    [ MICHAEL  Jun 22, 2021 ]
    2 answers
    I bough NAD C388, what need to buy to get better sound, thanks
    [ HUNG  Jul 07, 2021 ]
    Not familiar with this type of connector, so the spade size is not something I can visualize easily. (Certainly over the years, I've had plenty of experience with "in the box" connectors of this type - I'm guessing things get tweaked in many ways when offered by quality makers) Looked at my NAD. Speaker posts a good size. But again, comparisons are nil and I don't have anything handy that gives an actual size of the posts. I'm sure Crutchfield can give you a more accurate opinion. I took the time to write this to tell you that I am very satisfied with my NAD and is worth the look. Good luck
    [ JOHN  Jun 23, 2021 ]
    I have an odd question but one that is important to me. I just bought a pair of speakers B&W 706 S2's. Now I'm looking to pair it up this IA? Actually 2 questions: 1: is this a good fit? 2: I share my music room with my peloton bike which I would like to use with my new system but I am concerned about the bluetooth connection? If I have problems connecting my peloton bike to the bluetooth of the NAD C388 can I exchange it for a different amp?
    [ STEVEN  Dec 29, 2020 ]
    3 answers
    I purchased the C-388 for four reasons: 1) I needed a powerful amplifier to drive a set of Wharfdale EVO 4.4 speakers; 2) NAD's longstanding reputation for quality and value; 3) I wanted to be able to access a large digital music library on my home computer; and 4) I wanted the convenience of controlling music play from wherever I am sitting. I live in a fairly large open-design home with my prime listening area set up in a loft out of sight from the main living area below. I've had no problems connecting via bluetooth from my iPhone or iPad nor controlling play from the living area, a great convenience for entertaining. I haven't had time yet to explore options on the NAD and BluiOS apps downloaded on my mobile devices. Because I have a very large library of music across digital and analogue formats, I haven't yet felt the need to explore streaming services through the NAD's internet function. However, it is available and there was no problem connecting to my home network. As for returns, it would be good to check with Crutchfield. Generally, their return policy is 60 days. Looks like you've got a super setup. A brother recently purchased a set of B&W floor speakers and couldn't be happier. The NAD should have more than enough power to drive your speakers. Enjoy!
    [ JOHN  Jan 02, 2021 ]
    i have it paired bluetooth with amazon echo speaker but have it paired by wifi connection via apple airplay... better quality sound just be sure only one source is connected at a time..
    [ BARRY  Dec 29, 2020 ]
    You would have to download the the BluOS app on a smartphone or IPad and see if it finds the Peloton bike.
    [ Rudolph  Dec 29, 2020 ]
    Can I connect a turntabl with a moving coil cartridge to this amplifier?
    [ Martin  Jul 13, 2020 ]
    3 answers
    You would need an amplifier to boost the MC phono cartridge's level. The phono pre-amp in the C388 is designed for MM cartridges.
    [ FRITZ  Jul 13, 2020 ]
    You can, but you will need a separate phono amp in order to do so. The NAD's internal phono stage only supports an MM cartridge.
    [ MICHAEL  Jul 13, 2020 ]
    Yes, this amp as a phono stage to connect into. I plugged my pro-ject classic directly in and the sound is great/crisp, better then the rega phono amp is used prior (maybe not quite as warm).
    [ robert  Jul 13, 2020 ]
    Does this natively support RAAT? (Roon's network protocol). Roon's website seems to suggest yes but nothing in the specs or manual says this amplifier supports RAAT.
    [ JAGER  Jun 12, 2020 ]
    1 answer
    We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.
    [ Thomas  Jun 30, 2020 ]  Staff
    [ GORDON  Jun 08, 2020 ]
    2 answers
    I am not a techie and am not sure what you are asking. It does have 2 USB ports and a Lan connection as well as Bluetooth. So far, I've just been playing records, CDs and XM. I am very happy with it so far.
    [ THOMAS W  Jun 09, 2020 ]
    Based on the NAD website, yes. Personally I do not have the HDMI module on my amplifier. I only have the BluOS-2i module. Do a search online for NAD MDC Modules and the the NAD link at the bottom of the page lists the comparable amplifiers with the HDMI module and the C388 is listed. I hope it helps. Take care!!!
    [ GEORGIOS  Jun 09, 2020 ]
    How do I access music on a hard drive connected to one of the USB ports? I'm trying to use the BluOS app, and I'm not able to see the drive?
    [ SCOTT  Jul 09, 2019 ]
    1 answer
    If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
    [ KRISTINA  Jul 17, 2019 ]  Staff
    Does the Nad C 388 except banana plugs on the speaker connection?
    [ DOUG  Jun 09, 2019 ]
    1 answer
    Yes, I have mine connected in that manner...
    [ ROY  Jun 09, 2019 ]

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