Skip Navigation

RetroSound Stereophonic

3-channel car amplifier — 65 watts RMS x 2 at 4 ohms + 229 watts RMS x 1 at 2 ohms

Overview

Our take on the RetroSound Stereophonic

RetroSound's neat-looking Stereophonic 3-channel amplifier can power your entire system, sending 65 watts RMS to each of your front speakers while delivering up to 229 watts RMS to your sub. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis less than 2 inches high that'll fit in a lot of out-of-the-way locations.

Centralized power

RetroSound's neat-looking Stereophonic 3-channel amplifier can power your entire system, sending 65 watts RMS to each of your front speakers while delivering up to 229 watts RMS to your sub. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis less than 2 inches high that'll fit in a lot of out-of-the-way locations.

For the loud crowd

You can also set up the Stereophonic for 2-channel operation, powering a single high-performance speaker with 190 watts RMS each, while sending 229 watts to a sub. High- and low-pass filters, with steep 24 dB per octave slopes, let you fine-tune the signal to precisely match your particular speakers and subwoofer. The Stereophonic's subwoofer channel features a bass boost, so you can really pile it on if you want.

Product Highlights:

  • 3-channel car amplifier
  • 65 watts RMS x 2 + 170 watts RMS x 1 at 4 ohms
  • 90 watts RMS x 2 + 229 watts RMS x 1 at 2 ohms
  • 180 watts RMS x 1 bridged at 4 ohms + 229 watts RMS x 1 at 2 ohms
  • Class D amp technology
  • variable high-pass filter (40-400 Hz, 24 dB/octave) on front channels
  • variable low-pass filter (50-250 Hz, 24 dB/octave) on subwoofer channel
  • variable bass boost (0-12 dB at 50 Hz) on subwoofer channel
Other Features:
  • RCA preamp inputs
  • fuse rating: 40A x 1
  • wiring and hardware not included with amplifier
    • 8-gauge power and ground leads recommended
  • dimensions: 10-3/16"W x 1-7/8"H x 5-5/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • 3-channel amplifier
  • Two 40 amp ATO fuses (1 installed/1 spare)
  • 4mm Allen wrench
  • 2mm Allen wrench
  • Four 3/4" Screws
  • Owner's manual
  • RetroSound contact information
Reviews
Details

Hands-on research

Product Research

Features

Channel Configuration: The Stereo Phonic is a 3-channel amp; essentially a full range 2-channel amp and a mono subwoofer amp built into one chassis. The full range section is bridgeable, so the it can be configured as a 3-channel or 2-channel amplifier.

  • Channels 1/2:
    • 4Ω: 65 watts RMS x 2-channels
    • 2Ω: 90 watts RMS x 2-channels
    • Bridged: 180 watts RMS x 1-channel into 4Ω
  • Channel 3:
    • 4Ω: 170 watts RMS x 1-channel
    • 2Ω: 229 watts RMS x 1-channel

Gain Control: The input levels are independently adjustable for channels 1/2 and channel 3. The input range for both is 200mV to 6.0 Volts.

Crossover: The amp has independent crossover controls for channels 1/2 and channel 3. The crossover slopes for both are 24 dB/octave:

  • Channels 1/2: high pass; rotary dial; continuously variable 40-400 Hz
  • Channel 3: low pass; rotary dial; continuously variable 50-250 Hz

Input Mode: The two position input mode switch allows choosing 2-channel (only the channel 1/2 RCA inputs are active) or 3-channel (all 4 RCA inputs are active).

Bass Boost: The bass boost on channel 3, centered at 50 Hz, is continuously variable from 0 dB (flat) to +12 dB.

Power Input: Two set-screw terminals are provided for connecting the power and ground cables. The terminals accept up to 4-gauge wire. The set screws are tightened/loosened with the included 4mm Allen wrench.

Remote: The remote turn-on set screw terminal accepts up to 10-gauge wire. The set screw is tightened/loosened with the included 2mm Allen wrench.

Speaker Outputs: The three pair of speaker output set-screw terminals will accept up to 10-gauge wire. The set screws are tightened/loosened with the included 2mm Allen wrench.

Signal Input: The amplifier has two pair of RCA input jacks, labeled channel 1/2 and channel 3.

Fuses: The amp has one 40-amp ATO fuse, behind a cover panel on the bottom of the amp.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories
Q & A

Customer Q&A

Articles