About the NAD C 388 BluOS-2i
Power and flexibility
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.
- 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, Slacker, Radio Paradise, Napster, Murfie, 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: 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
- signal-to-noise ratio: 95 dB
- 17-1/8"W x 4-3/4"H x 16-5/8"D (6-3/8"H w/antenna)
- warranty: 2 years
- Our 60-day money-back guarantee
- MFR # C388BluOS2i
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
- 41" USB extension cable
- Quick Setup Guide
- Mounting Instructions
- Warranty Information
NAD C 388 BluOS-2i reviews
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More details on the NAD C 388 BluOS-2i
Features & specs
|Watts RMS per Channel (8-ohms)||150|
|Watts RMS per Channel (6-ohms)||Not given|
|Watts RMS per Channel (4-ohms)||150|
|Minimum Impedance||4 ohms|
|Signal to Noise Ratio||95|
|Digital Music Features|
|Built-in DAC (Digital to Analog Converter)||Yes|
|High-resolution Audio Playback||ALAC,AIFF,FLAC,WAV,MQA|
|Total Analog Inputs||2|
|Optical Digital Inputs||2|
|Coaxial Digital Inputs||2|
|Preamp Outputs||Stereo RCA|
|Dimensions and Warranty|
|Parts Warranty||2 Years|
|Labor Warranty||2 Years|
Hybrid Digital Amplification: NAD has moved away from the old-fashioned power-hungry linear power suppliesa 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 mosat 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.
Bluetooth w/ aptX: The NAD C 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 C 388 BluOS 2i.
Dual USB-A Ports: The C 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 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 plass-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.
Wired or Wireless Network Connection: The NAD C 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 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 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, music libraries (from computers and NAS drives); and hardwired inputs (analog or digital).
- 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 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|
|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 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 C 388 BluOS 2i that captures and delivers master quality audio. The C 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 Prime: With a Amazon Prime Music subscription, you can access over 2 million songs ad-free and on-demand, as well as curated playlists and personalized stations. Upgrade to an Amazon Music Unlimited subscription to access tens of millions of songs.
- Spotify Connect: If you subscribe to Spotify Premium 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: 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
- 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 Qobuz, 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 (via Available Firmware Update): The NAD C 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.
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 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 Compatible: The NAD C C 388 BluOS 2i BluOS Streaming DAC will support Amazon Alexa and voice control through an over-the-network firmware update (now available). Using an Amazon Alexa enabled device (sold separately), you can use your voice to explore music services, select presets, adjust volume levels, switch up songs in different rooms, or even group your Bluesound components together and play your music in perfect sync throughout the house. Each Alexa voice command will need to start with the phrase "Alexa, ask Blue Voice to" or "Alexa, Tell Blue Voice to". Alexa Skills for BluOS will need to be setup through the Amazon Alexa app on your Apple iOS or Android device.
Note: Click here for more information regarding Alexa 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.
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