Why Shop Sonic Free Shipping Free Tech Support Easy Returns Low Price Guarantee Details

Boss 638B

CD/MP3/WMA Player with Remote and Built-in Bluetooth for Wireless Phone Connection

No customer reviews yet. Be the first!

The product on this page is discontinued.

Will this fit my car?

Select Vehicle >
Up to $30 in free installation accessories included with this product. Click for details.

Specials with this product

  • Free Installation Accessories!details
  • CD/MP3/WMA Player with Remote
  • ISO DIN mounting
  • Fully detachable front panel
  • 5 Volt preamp output
  • Bluetooth system
  • Oversized, active black mask display
  • Illuminated control buttons
  • PLL synthesized tuner
  • 30 Station presets
  • USB port
  • SD/MMC card port
  • Quartz digital clock
  • CD mute function
  • Track repeat
  • Intro scan
  • 1 Bit D/A converter
  • 8X oversampling
  • MP3/CD-R/CD-RW compatible
  • ID3-tag display
  • Aux/mobile video input
  • Subwoofer output (BassMax)
  • ESP anti-skip mechanism
  • Preset EQ response curves
  • Separate bass and treble
  • Balance and fader controls
  • Dual (front and rear) RCA outputs
  • Loudness
  • Stereo/mono & local/distance switches
  • Wireless remote control
  • Output power: 80 watts x 4 chan. Peak
  • 1-year Manufacturer's warranty
Product History:
Boss 745BA thumbnail
(newest, current model)
** CLOSEOUT!! ** Boss 638BA thumbnail
(previous model, replaced by Boss 745BA)
Boss 638B thumbnail
(previous model, replaced by ** CLOSEOUT!! ** Boss 638BA)
In-Dash Receiver Specifications
Receiver SizeN/A
Faceplate SecurityDetachable
Remote ControlYes
Peak Power Output80 watts x 4 channels
RMS Power Output25 watts x 4 chan. approx.
Preamp RCA OutputsN/A
Preamp Voltage5 volts
Built-In EqualizerPreset EQ
Display ColorN/A
Button ColorBlue
CD Signal-to-NoiseN/A
Playback Features
AM/FM TunerYes
CD-R/RW PlaybackYes
MP3 PlaybackYes
DVD / Video PlaybackNo
Expandability Features
Audio/Video InputsN/A
iPod Audio ConnectionNo
Satellite RadioNo
HD RadioNo
CD Changer ControlsN/A
Warranty and Return Policy
Return Policy Standard Return Policy
Nobody has rated this product yet.
Share your thoughts with others:
Installation, Tools & Accessories
Get your car stereo receiver installed by an expert, or do it yourself with install tools and accessories found below.
 ProductPriceAdd?
Monster Cable MPC CLNKIT-SM CNMonster Cable MPC CLNKIT-SM CN
2 Bottles of LCD Screen Clean with Cleaning Cloth
$5.99
Scosche TK12 Car Stereo Installation KitScosche TK12 Car Stereo Installation Kit
Includes panel removal tool, wire cutter/stripper, test light, RCA cable runner, screwdriver, and more!
$16.99
18 Butt Connectors, 2 Ring Terminals, and Zip Ties18 Butt Connectors, 2 Ring Terminals, and Zip Ties
Great for connecting your car stereo wires to the harness.
$5.99
System Optimization and Tuning
Use these accessories to test and tune the sound your new audio system!
 ProductPriceAdd?
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-105AutoSound 2000 CD-105
Demonstrates different characteristics and specifications of an audio system.
$12.99
Sonic Electronix Stickers
Show off your Sonic Electronix pride with a decal for your car! Choose the size that is best you!
 ProductPriceAdd?
Sonic Electronix StickerSonic Electronix Sticker
4-1/2" Vinyl SonicElectronix.com Sticker (Blue)
$0.25
Medium Sonic Electronix StickerMedium Sonic Electronix Sticker
6-1/2" Vinyl SonicElectronix.com Sticker (Blue)
$0.50
Large Sonic Electronix StickerLarge Sonic Electronix Sticker
13" Vinyl SonicElectronix.com Sticker (Blue)
$0.99

Product Summary

Manufacturer: Boss
Model number: 638B
UPC: 791489104159
Weight: 6.00 lbs
Internal SKU: 638b
Internal product ID: 6918
February caption contest - win a Powerbag!

Customer Testimonial

I asked the staff what I needed to finish my car and they quickly responded. A week later and without any snags my system is running perfectly! Thanks guys! Great prices and great staff! Will do business again!

- Cfareri31 from NJ

See more…

Recently Viewed Items

638b thumbnail

SIRIUS SiriusConnect Adapter for Sony + SIRIUS Connect Universal Tuner

638b thumbnail

HD Radio Tuner for Select Sony HD Ready Car Stereos

638b thumbnail

Bass Control Module for Remote Ready EL and BA Series Amplifiers