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Fusion MS-RA670

Apollo Series marine digital media receiver (does not play CDs)

Item # 917RA670

Fusion's Apollo MS-RA670 blends sleek styling, cutting-edge technology, and marine-ready toughness in one compact...

Fusion's Apollo MS-RA670 blends sleek styling, cutting-edge technology, and marine-ready toughness in one compact...

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Free lifetime tech support

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Since 1974

Years of experience making people happy.

About the Fusion MS-RA670

Looks good. Sounds great.

Fusion's Apollo MS-RA670 blends sleek styling, cutting-edge technology, and marine-ready toughness in one compact package. With a beautiful one-piece glass display, multiple source options, and Fusion's advanced digital signal processing (DSP), this is one seriously awesome receiver.

Looks good. Sounds great.

Fusion's Apollo MS-RA670 blends sleek styling, cutting-edge technology, and marine-ready toughness in one compact package. With a beautiful one-piece glass display, multiple source options, and Fusion's advanced digital signal processing (DSP), this is one seriously awesome receiver.

The awesome Fusion-Link app

Fusion-Link is the industry standard protocol for marine audio integration and control. This free app lets you control your entertainment directly from marine multi-function displays, compatible Apple or Android devices, and Garmin watches. You can choose from multiple control options and adjust your audio from wherever you are on your boat. And you'll see what's playing on the 2.7" color display.

Your Apollo Series receiver will always be up to date, thanks to over-the-air software updates. All you need to do is use the Fusion-Link app on your smartphone or compatible device.

Hear the difference DSP can make

One of the best things about Fusion-Link is that it lets you control the receiver's digital signal processing settings. The Fusion DSP's feed-forward limiter anticipates peaks in the audio and automatically adjusts the gain, so you can enjoy full-range audio at every volume level without distortion. You can also customize this multi-zone receiver's sound settings to suit your Fusion speakers or adjust the settings to maximize performance in any area of your boat. With this Apollo Series receiver, everything will sound awesome anywhere you are.

Scads of source options

How do you listen to your music these days? Whatever the answer, the Apollo MS-RA670 can probably handle it. There's AM/FM radio, of course, plus Bluetooth, UPnP, and an optical digital audio input. Plug a device in to the AUX or USB connections, or listen to your favorite SiriusXM programming (subscription and tuner required). And perhaps best of all, you can also stream high-quality audio from compatible Apple devices using Apple Airplay.

The Apollo MS-RA670 can be used in a Wi-Fi system when connected to an external network router or a Fusion Apollo RA770 stereo. If you're building a big system, you can enjoy perfectly synced music everywhere on a larger boat by wirelessly connecting additional compatible stereos via Fusion's PartyBus™ audio distribution technology.

Get into a zone

The MS-RA670 lets you control the sound in three independent audio zones, so you can customize your listening experience all around the boat. Each localized menu lets you control volume limits, zone naming, zone disabling, and more. All line-outs will require additional amplification, so talk to a Crutchfield Advisor for more information about building a system.

Multiple modes to suit your mood

You can rock the boat with Party Mode, turn it down a bit with Personal Mode, and switch between the two without disrupting the audio in other areas of the vessel.

Updates available

It's easy to keep your Apollo Series receiver up to date. Just download the latest firmware update from the Fusion website onto a USB thumbdrive and then insert it into the USB port.

NEW: Fusion Apollo radios can now stream high-quality audio from compatible Apple devices using Apple Airplay 2.

True-Marine™ toughness

The Apollo MS-RA670 is designed and engineered using Fusion's True-Marine design philosophy. That means it's more than tough enough for life on the water. The front panel is IPX7-rated for water resistance, and it's also proven to stand up against salt fog, temperature, vibration, and damaging UV rays.

Bluetooth note: Use of this receiver's Bluetooth features will depend upon your phone's Bluetooth capabilities. Learn more in our article explaining Bluetooth profiles.

iPod/smartphone note: If you're going to use your iPod® or smartphone with this receiver, be sure to check "Details" for compatibility information.

This marine digital media receiver will not play CDs.


Product highlights:

    General Features:
    • marine digital media receiver with built-in Bluetooth
    • 2.7" glass LCD color display
    • can be connected to other Apollo Series receivers and remotes with a network cable and/or router
    • built-in Fusion DSP optimizes sound quality at all listening levels
    • feed-forward limiter anticipates peaks in the audio
    • multi-zone control lets you tune three audio zones
    • works with iPod/iPhone, plus Android and Windows phones
    • efficient Class D amplifier technology conserves battery power
    • built-in PartyBus audio distribution technology
    • AM/FM tuner
    • plays MP3, M4A, and FLAC files
    • works with Apple Airplay when connected to a Wi-Fi network
    • remote control
    Marine Features:
    • IPX7 water-resistant face
    • works with FUSION-Link and NRX remote controls
    • plugs into your existing NMEA 2000 network
    • compatible with SiriusXM satellite radio tuner
    • works with existing Wi-Fi systems
    • inputs: rear USB port; AUX input; digital optical input
    • outputs: 3-zone audio (line outs require separate amplification)
    • SPDIF port supports TV audio output
    • Ethernet port
    Other Features and Specs:
    • built-in amplifier: 26 watts RMS/70 peak x 4 channels
    • over-the-air software updates via the free Fusion-Link app or USB
    • can be controlled with a Garmin smart watch
    • multi-language interface: English/French/German/Spanish/Dutch /Italian
    • mounting hardware included
    • mounting depth: 4-1/4"
    • cutout: 5.125"W x 1.9375"H
    • nose width: 6.0625"
    • nose height: 2.6875"
    • warranty: 3 years
    • Our 60-day money-back guarantee
    • MFR # 010-02138-00

    What's in the box:

    • Marine digital media receiver (15A fuse)
    • Wiring harness
    • Zone 1/Zone 2 harness
    • Zone 3 harness
    • Rubber front-cover
    • Gasket
    • 2 Endcaps
    • 4 Screws
    • Quick Start Manual
    • Mounting Template
    • Installation Instructions
    • Important Safety and Product Information

    Customer reviews

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    Fusion MS-RA670 reviews

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    Crutchfield response

    << >>

    More details on the Fusion MS-RA670

    Stacey B.

    Features & specs

    AUX Input RCA (rear)
    Audio/video Input ---
    USB Input Rear
    USB Port Power 1A
    Backup Camera Input No
    Second Camera Input No
    CarPlay No
    Android Auto No
    Siri Control No
    Alexa Voice Control N
    Android Control Yes
    Memory Card Slot USB
    Bluetooth Compatible Built-in
    Satellite Radio Ready SiriusXM 3.0
    HD Radio No
    Navigation ---
    iPod Compatibility
    Full size No
    Nano No
    Touch No
    iPhone No
    RMS Power (CTA-2006) N/A
    RMS Power (Manufacturer) 26 watts
    Peak Output 70 watts
    RMS Power Bandwidth Not givenHz
    Preamp Outputs 9-channel
    Sub Preamp Outputs Yes
    Switchable Rear Preamp Outputs
    Video Screen No
    Navigation App Compatible (iOS)
    Navigation App Compatible (Android)
    Preamp Voltage 5.5 volts
    Screen Size 0
    Screen Type N/A
    Display Color Full Color
    Key Button Color White
    EQ Bands 3
    Wireless Remote Optional
    Steering Wheel Control Compatible No
    Parts Warranty 3 Years
    Labor Warranty 3 Years
    FM Sensitivity ---
    European Tuning Yes
    Seek/Scan Seek
    Radio Data System No
    File Playback
    Music File Playback MP3, AAC, FLAC, WAV
    High-res Playback N

    Product Research

    Marine Features
    Variety of Sources
    Audio Section

    Marine Features

    True-Marine Designed & Engineered: Built on Fusion's True-Marine design philosophy, the Apollo Series MS-RA670 has an impressive IPX7 rated water resistant front-panel, and has been tested to a high level for protection against salt fog, temperature, vibration and UV protection. 

    Optically Bonded Color LCD w/ Simple Controls: The 2.7" color LCD is optically bonded to improve durability and protection against condensation and fogging. The 2.7" screen has been optimized for daylight viewing and offers brightness adjustment. The color LCD indicates source and menu selection, as well as displays song/artist info (including album art). Six push-buttons and a 3-way rotary knob provide control of the MS-RA670 from its front-panel. The 3-way rotary knob does double-duty as a volume control and menu selector. The push-buttons provide power on/off, menu screen, source selection, and playback control (including Play/Pause & Previous/Next Track).

    Note: The optically bonded color LCD is not a touchscreen.

    Bulkhead Mount: The MS-RA670 requires a rectangular cutout in the bulkhead for inserting the chassis. The marine receiver has a shallow mounting depth, perfect for space conscious installation on small boats and personal watercraft, where this is especially crucial. Four screws (supplied) fasten the faceplate against the mounting surface, and hold the waterproof gasket against the bulkhead. A paper template is supplied to assist you with the cutout and drilling the screw holes.

    • Chassis Dimensions: 5.125" (w) x 1.9375" (h) x 4.125" (d)
    • Front-Panel Dimensions: 6.0625" (w) x 2.6875" (h) x 0.875" (d)

    Fusion-Link Wired Control: The Apollo Series MS-RA670 offers direct stereo control from a compatible Multi-Function Display (MFD) or NRX Series wired remote control when utilizing an existing NMEA 2000 or Ethernet network.

    • Optional Ethernet Remote Control: The Fusion Apollo MS-ERX400 (917ERX400, sold separately) adds wired remote control for intuitive and integrated operation of the MS-RA670 from any zone on board your boat. This wired remote control can either connect to a single stereo or it can connect to the Fusion PartyBus network to view and control all of the stereos on the network. Enjoy synchronized audio playback of one audio source across all Apollo Series stereos connected to the same network, with individual and independent volume control for each stereo. The Apollo MS-ERX400 can also be used to turn on or off any Apollo Series stereo or remote connected on the network.
    • Optional NMEA2000 Remote Control: Install a MS-NRX300 Wired Remote (917NRX300, sold separately) in each of the independent audio zones of your vessel, for localized zone volume level and global source control. Control each audio zone independently from multiple remotes connected to your Fusion MS-RA670 marine stereo, or manage the entire entertainment experience from a single remote control. Up to 3 MS-NRX300 wired remotes can be connected to the MS-RA670.
    • Fusion-Link via NMEA2000: The MS-RA670 marine stereo supports Fusion-link via a NMEA2000 network. Fusion-Link is the industry standard for entertainment integration onboard the worlds most respected boating brands, developed by Fusion Electronics and supported by leading marine electronics manufacturers. Fusion-Link allows a certified Multi-Function Display (MFD) the ability to integrate with, and utilize Fusion's specialized entertainment functionality, creating a centralized control station for the entire vessel and a more user-friendly experience.

    Optional ANT Wireless Remote: The Fusion ARX Remote (MS-ARX70, sold separately) is an ANT wireless stereo remote. ANT is an ultra-low-power (ULP) wireless networking protocol operating in the 2.4GHz band with a wireless range of 33'. Able to interface with compatible Fusion stereos, the ARX Remote can control playback in up to four audio zones.

    Wireless App Control: The MS-RA670 marine stereo offers wireless control from your Apple iOS, Android OS, or Garmin watch device through free downloadable apps.

    • Fusion-Link Remote App: Once downloaded, the Fusion-Link Remote Control App (for Apple iOS 8.0+ and Android 2.2+) will allow navigation of all music sources, independent audio zones, and multiple Fusion Entertainment Systems connected to the same NMEA2000 network or via Bluetooth from your Apple iOS or Android device. Navigate albums, artists and playlists with the same ease as navigation of the Fusion marine interface, iPod and iPhone Album art is even displayed on screen.
    • Fusion-Link Lite App: Download the free Fusion-Link Lite app from the Connect IQ Store to enable wireless control via ANT technology from a compatible Garmin watch (sold separately).

    Over-The-Air (OTA) Software Updates: The Apollo Series is intelligently simple and always up-to-date, thanks to the over-the-air (OTA) software updates available from your Apple iOS or Android mobile device via the free Fusion-Link app.

    Variety of Sources

    UPnP Support: The Apollo Series MS-RA670 offers high quality audio streaming over a network connection delivering a higher data transfer rate in comparison with Bluetooth. The MS-RA670 supports UPnP for streaming of MP3, AAC, WAV, and FLAC audio files from a UPnP compatible source device (such as your Windows PC or media server). The receiver will provide control and song/artist display of your UPnP music content. The MS-RA670's Ethernet port will need to be connected to a wireless network WiFi router in order to utilize this functionality of the receiver.

    Apple AirPlay 2 (firmware update available): Through a firmware update you can now stream high quality audio seamlessly via Apple AirPlay 2 over WiFi from your compatible Apple iOS (11.4+) device to the Apollo MS-RA670. You'll be able to stream your Apple Music or your favorite music apps from your Apple iOS device to the MS-RA670 with song/artist/album info display (including album art). You will need to download the latest firmware update from the Fusion website onto a USB thumbdrive and then insert the thumbdrive into the USB port of the MS-RA670.

    Note: The MS-RA670 does offer built-in WiFi. In order to support Apple AirPlay 2, the MS-RA670 will need to be connected to a wireless network WiFi router via an Ethernet cable.

    Bluetooth Audio Streaming: The Fusion MS-RA670 marine stereo features built-in Bluetooth 3.0 with support for wireless music streaming from almost any Bluetooth-enable device (such as your smartphone or tablet). The MS-RA670 supports wireless audio playback (AD2P 1.2) and control (AVRCP 1.3) of a Bluetooth-enabled device. The MS-RA670 will wirelessly play back stored music, music apps, and other audio on your Bluetooth source device. With an effective range of 10 Mtrs (33ft), you can enjoy seamless streaming of your favorite audio tracks without having to return to the stereo to change tracks.

    • Control: The unit will be able to control basic playback functions, such as Play/Pause & Skip Next/Previous. Advanced music control of your music apps will still need be done via your Bluetooth source device.
    • Display: Song/artist information, along with Album Art is displayed on the receiver's LCD screen.
    • Pairing: You can pair up to 8 Bluetooth devices, but only one can be connected and used for playback at a time.
    Notes This unit does not support Bluetooth hands-free communication for making and answering phone calls.

    USB Port: The Fusion MS-RA670 features a rear-panel USB (type-A) port for connection of a of USB MSC or MTP device, such as USB thumbdrives and select Android smartphones. The unit supports playback of a variety of music files loaded onto a USB MSC or MTP device. The receiver provides playback control, song/artist display (including Album Art), and charging of your USB device. Purchase Fusion's MS-CBUSBFM1 USB extension cable (917USBFM1, sold separately) for easier access to the unit's USB port.

    • MSC Playback: The MS-RA670's USB port enables playback & control of MP3, AAC, WAV, and FLAC music files stored on a USB MSC device, such as a USB thumbdrive (up to 32GB). Your USB MSC device must be formatted in FAT 32 or NTFS.
    • MTP Playback: The MS-RA670's USB port also enables playback & control of stored MP3 and AAC music files on your portable USB MTP device, like your newer Android smartphone (w/ OS 4.0+) through the Fusion head unit. Music files must be located in a folder using one of the following names - My Music, My_Music, mobile, or Music. You cannot use your Android smartphone's touchscreen to control music playback and you cannot select music apps from your smartphone for playback. However, you can continue to listen to stored music on your Android smartphone through the head unit while you check your Calendar, Facebook, Texts, etc on your phone.
    Note: The unit's USB port does not support connection of Apple iPod/iPhone/iPad, Android AOA devices, USB hubs, or card-readers.

    Optical Digital Input: The unit's optical (toslink) digital input allows you to connect a TV or DVD player to the MS-RA670 for audio playback. Your TV or DVD player's optical digital output must be set to 2ch PCM. The MS-RA670's optical digital input does not support Dolby Digital or DTS.

    Aux Input: Fusion's Apollo Series MS-RA670 is outfitted with a rear-panel stereo RCA auxiliary input for connecting an external audio device. The stereo Aux input allows for a wide range of input levels thanks to its adjustable input gain (-9 to +9 dB).

    AM/FM Tuner: The Apollo Series MS-RA670 marine stereo features a built-in AM/FM radio that offers manual, seek, and preset tuning. You can store up to 15 FM station presets and 15 AM station presets. You can select between US and European tuning.

    SiriusXM Ready: The MS-RA670 is SiriusXM Ready, so you can listen to commercial-free music, all your favorite sports, exclusive talk and entertainment, comedy, news, traffic, weather, and more. Simply connect the SiriusXM Connect Vehicle Tuner (220SXV300, sold separately) to the dedicated SiriusXM port on the rear of the head unit and enjoy satellite radio without additional translators or cables. With the SiriusXM Connect tuner you'll have access to more than 140 channels of exclusive programming directly from SiriusXM; check out the most popular SiriusXM subscription packages here. Additional features include:

    • Channel/Category Lists & Presets: The Channel List displays a list of all available channels. The Category List displays all available categories and stations within those categories. You can store up to 15 SiriusXM Satellite Radio preset stations for easy recall.
    • Song/Artist Info + Instant Replay Displayed information such as Channel Name, Artist Name, & Song Title can be viewed on the unit's LCD. You can replay songs from up to 1 hour past playing, making sure you never have to miss another beat of your favorite tunes.
    • TuneStart & TuneMix: With TuneStart you will always hear the song playing on each of your favorite stations from the start, no matter how far along it is when you change the channel. With TuneMix, you can create your own channel from a mix of your favorites to create your very own custom channel. TuneMix also gives you the ability to skip songs back to the last hour you have been listening across all channels in your mix.
    • Artist, Song, & Game Alerts: You can choose to receive alerts whenever your favorite artists, songs or sports teams start playing. With SportsFlash, you'll receive key plays and updates from your favorite teams during live games, ensuring you never have to miss the best moments
    • Parental Control: The SiriusXM Parental Control feature allows you to control access to channels that you consider inappropriate for younger listeners. When enabled, The Parental Control feature requires you to enter a 4-digit passcode to tune to the locked channels.
    Note: A separate SiriusXM Satellite Radio subscription is required (operates on the XM Network). However, you can easily add this SiriusXM tuner to an existing Sirius or XM account for a Multi-Radio Discount Plan.

    Audio Section

    PartyBus: PartyBus is Fusion's wired (Ethernet) or wireless (WiFi) network audio distribution system of the future. The power of PartyBus kicks in when you add more PartyBus-enabled stereos (via a wired or wireless network connection) to your marine entertainment system. Each additional PartyBus-enabled stereo gives you the option to join Party Mode and play the same perfectly synced audio source through the vessel. Or, you can select Personal Mode and listen to available audio sources from your stereo in the area of your choice without disrupting Party Mode in the other areas of the vessel.

    • You can connect up to eight Fusion PartyBus devices (including the MS-RA670, MS-RA770 and MS-SRX400) on one network.
    • At least one Apollo MS-RA670 or MS-RA770 stereo is required in the PartyBus network.
    • The MS-SRX400 (sold separately) can stream from a Fusion PartyBus stereo (such as the MS-RA670 or MS-RA770), but cannot stream sources to other Fusion PartyBus devices on the network.
    • Fusion PartyBus devices cannot control the speaker volume of another stereo. You can only adjust the volume of speakers or speaker zones connect directly to the PartyBus stereo.

    Class-D Amplifier: The Fusion Apollo Series MS-RA670 is equipped with a Class-D amplifier rated at 26 watts (RMS)/70 watts (Peak) x 4 channel for Zone 1 and Zone 2. Up to two pairs of speakers can be connected in parallel in each Zone (a zone can support no more than four speakers using the on-board amplifier). Each Zone has independent volume control.

    9Ch/5.5V Pre-outs: The Apollo Series MS-RA670 is also equipped with stereo RCA Zone 1, Zone 2, and Zone 3 pre-outs for connection of external amplifiers and speakers in four separate locations on your watercraft; plus a mono-Sub pre-out for each zone (that's a total of nine pre-outs). Each pre-out is rated at 5.5 volts and each Zone provides independent volume control. The subwoofer pre-outs provide further volume and crossover control.

    Multi-Zone Technology: Three independent audio zones are available for a customized listening experience across your vessel, each with advanced localized menu controls including volume limits, zone naming, disabling zones and more. Zone 1 and Zone 2 provide amplified speaker level outputs, as well as line-level pre-outs. Zone 3 offers line-level pre-outs only. The full-range and subwoofer line-level outputs of each Zone will require additional amplification.

    Digital Signal Processing (DSP): Fusion digital signal processing (DSP) produces superior sound quality in the outdoor marine environment. The power of Fusion DSP enables the optimization of Fusion speakers in each audio zone on your vessel, giving you premium audio delivery to all Fusion speakers in any environment. Every step of the audio chain is optimized through calculations by Fusion's audio engineers to deliver a technically superior listening experience, without the need for you to have a technical understanding. Using environmental information and customized Fusion speaker profiles, you can now achieve customized, optimized audio for any area of your boat, resulting in an entertainment system that is perfectly tuned for premium audio reproduction, and programmed to protect your system season after season.

    • Feed-Forward Limiter: The Feed-Forward Limiter anticipates a peak in the audio and adjusts the gain to avoid distortion, at any volume level.
    • Volume Equalizer: The Volume Equalizer precisely calculates loudness curves optimized for the human ear to ensure quality, full-range audio at every volume level.
    • Speaker Profiling: Customized Fusion speaker profiles enables the optimization of Fusion speakers in each audio zone on your vessel, giving you premium audio delivery to all Fusion speakers.
    • Environmental Profiling: Using environmental information you can achieve customized and optimized audio for any area of your boat, resulting in an entertainment system that is perfectly tuned for premium audio reproduction.

    Independent Zone Audio Settings: You can set the balance, volume limit, tone, subwoofer level, subwoofer frequency, and name for each zone, and configure other zone-specific settings. The Loud setting maintains frequency response at low volumes, and increased perceived loudness at high volumes.

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    Customer Q&A

    9 questions already asked

    Can I have 6 speakers hooked up to this without a additional amp hooked up?
    [ Zac  Jan 17, 2023 ]
    1 answer
    Based on the specifications offered by Fusion, this radio's internal amplifier is capable of handling a minimum 2-ohm impedance per channel. This means that it would be possible to connect two 4-ohm speakers to each channel. However, this may cause the radio to generate more heat as a byproduct of producing more power. It would be important that the radio has decent ventilation so as to avoid overheating.
    [ Nemo  Jan 17, 2023 ]  Staff
    To run traditional 4 channel setup . After you supposed to do that with zone 1? Of use zone 1 and 2
    [ Eli  Jul 22, 2022 ]
    1 answer
    This sweet Fusion MS-RA670 Apollo Series has 9 channel, 3 zone outputs for the pre amp Eli. You'd essentially set your 4 channel amp up as zone 1, and that's it! You'll have the expandability onboard for if you do add additional zones or a sub. I hope this helps!
    [ Bo  Jul 22, 2022 ]  Staff
    Can this be set to shut off at a certain voltage level?
    [ Gmtec2  Jan 16, 2022 ]
    1 answer
    This unit is able to operate from 10.8 to 16 Vdc. There is no internal setting to automatically turn off the device at a certain voltage level.
    [ Davis  Jan 23, 2022 ]  Staff
    Does the USB port charge a phone if plugged in?
    [ M  Nov 26, 2021 ]
    2 answers
    [ JUSTIN D  Nov 29, 2021 ]
    yes it does
    [ richard  Nov 29, 2021 ]
    Why do your radio dimensions differ for what's listed on the Fusion site as well as the template ? I'm building a dash panel but don't have the head unit present. Fusion shows the following. Physical Dimensions: Width x Height x Depth (Front Panel incl. Volume Encoder)157mm x 68mm x 123mm [6-3/16" x 2-11/16" x 4-7/8"] Mounting Dimensions: Width x Height x Depth135mm x 52mm x 105mm [5-5/16" x 2-1/16" x 4-1/8"] who is correct ?
    [ Doug  May 02, 2021 ]
    1 answer
    The units overall physical dimensions will include dimensions that are bigger than whats needed to fit the chassis because the faceplates are bigger than the body. So the space needed to install its body (cutout dimensions) is less than the overall dimensions. We have advisors that can be reached by calling 1-800-324-9695 who can help discuss the installation location dimensions to see if this will be able to fit into it.
    [ Paul  May 22, 2021 ]  Staff
    What is the difference between this and the MS-RA210?
    [ tahoe2828  Mar 09, 2021 ]
    1 answer
    RA670 is a 3 zone system and RA210 is only 2 zones. Pretty similar otherwise. 670 does party bus, not sure about 210 but I think it does. I love party bus.
    [ ANDRE D  Mar 09, 2021 ]
    Do I need an external amp for the MS-RA 670 Apollo head unit to run a fusion FM-S10RW subwoofer ? Thanks
    [ jeff  Jun 01, 2020 ]
    4 answers
    Not sure on your sub specs but I run Wetsounds amps to answer your question I do not believe it will power a sub...if it does I'm not aware of it.
    [ Chris  Jun 03, 2020 ]
    You will definitely need an external amplifier to run the subwoofer. RCA jacks are supplied and the configuration is easy. To match the internal amplifier, a 100 to 200 watt sub amp will be plenty.
    [ Michael  Jun 02, 2020 ]
    Yes you will. The internal amp in this head unit is not near powerful enough to run a sub. I run two 6.5" JLs with mine and run the sub and other speakers off an amp.
    [ John  Jun 01, 2020 ]
    Yes. Gonna need way more power for a sub.
    [ Jason  Jun 01, 2020 ]
    Does this model have AirPlay? Garmin does not say, crutchfield says yes
    [ Aaron  Oct 27, 2019 ]
    5 answers
    I have the 670 and Air Play is the only way I play so it definitely has Air Play.
    [ ANDRE D  Mar 09, 2021 ]
    Hi Aaron, thank you for your question. The Fusion MS-RA670 does not have AirPlay. This head unit does have Bluetooth capability, and is compatible with the Fusion-Link Remote App, that you can download on your iPhone. This will allow you to stream audio from your iPhone, and have the album art display on the screen of the Fusion stereo. Please chat with an Advisor online or by phone at 1-800-324-9695. Any member of our Advisor team will be happy to help answer any questions you may have on this unit, or others!
    [ Jess  Nov 05, 2019 ]  Staff
    Garmin? I think you meant Fusion. To my knowledge it does not. But that doesn't really matter because the app works so well and gives you excellent control. I'm really pleased with this unit. Controls my 3 zones on my boat perfectly.
    [ Alex  Nov 04, 2019 ]
    I'm sorry I can't help you. I returned the 670 because it was to small. I bought the 770 which does have the Air Play.
    [ gina  Nov 04, 2019 ]
    I do not believe that it does.
    [ David  Nov 04, 2019 ]
    Does the unit have high pass crossovers on the preoutputs?
    [ Ryan  Oct 02, 2019 ]
    4 answers
    Outputs have complete frequency range. Has separate rca jacks for sub frequency. Has three separate zones, volume can be controlled separately. Hope this helps.
    [ Lauren  Oct 02, 2019 ]
    Yes, but there are only 4 or so pre-determined frequencies you can set them at. I personally do not like the slope. I turn this off and use the hi-pass coming out from my amplifier. The Wet Sound slope (Q), on the hi-pass amplifier, sounds perfect set at 100hz
    [ Jayme  Oct 02, 2019 ]
    The sub sprouts have crossover control. The radio has dsp controls as well. Which isn't quite like a crossover but a fantastic tool that controls the sound quite well. But all decent amps have crossover controls so really you shouldn't need it in the deck as well.
    [ Dusty  Oct 02, 2019 ]
    I'm sorry I can't answer this question due to the fact that I returned the system and purchased the bigger one. Which is the MS-RA770. Sorry I could not assist you.
    [ gina  Oct 02, 2019 ]

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