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RetroSound® Stereophonic 3-channel Amplifier

RetroSound® Stereophonic 3-channel Amplifier
RetroSound® Stereophonic 3-channel Amplifier
Stereophonic 3-channel Class D Power Amplifier-RetroSound
RetroSound® Stereophonic 3-channel Amplifier

RetroSound® Stereophonic 3-channel Amplifier


Product Features

  • 65 watts RMS x 2 channels full-range @ 4 ohms
  • 170 watts RMS x 1 channel subwoofer @ 4 ohms (229 watts RMS @ 2 ohms)
  • Bass Boost
  • Full-range Class D digital circuitry
  • Advanced protection circuitry
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Regular price $ 219.99
  • In stock, ready to ship
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An amplifier built for single cab classic trucks and two speaker systems, the Stereophonic 3-Channel amplifier powers your left and right speakers at 65-watts RMS per channel and sends 170-watts RMS to your subwoofer. For radios with only 2 inputs, set the Stereophonics input switch to 2 channel mode and the amplifier intelligently routes the selected inputs to all three balanced outputs. The Stereophonic is 2-ohm and 4-ohm stable and bridgeable, giving you more flexibility to build your system.

The Stereophonic Class D (digital) amplifier allows you to listen to your favorite classic hits at higher volumes with little to no distortion, thanks to its low current draw and exceptional dynamic range. High-pass and low-pass crossovers let you fine-tune your audio for the best listening experience, with gain and bass boost controls to help dial in the perfect amount of bass.


  • 3-channel amplifier
  • Full-range Class D digital circuitry
  • 65-watts RMS x 2 channels full-range @ 4 ohms
  • 170-watts RMS x 1 channel subwoofer @ 4 ohms (229-watts RMS @ 2 ohms)
  • Selectable input mode switch for 2 and 3 channel operation
  • Bridgeable
  • 2-ohm and 4-ohm stable
  • Built-in variable low pass and high pass full-range crossovers
  • Bass boost and gain control
  • Advanced circuitry and thermal protection
  • Easily connects to your RetroSound radio via RCA inputs
  • Works with any aftermarket radio with low-level RCA outputs
  • Dimensions: 12 in x 5.25 in x 2 in (30.5 cm x 13.3 cm x 5 cm)

Optional Wiring Kit

Simplify the installation of your RetroSound® Stereophonic amplifier with this convenient wiring kit that includes everything you’ll need to get your 3-channel amplifier installed. The RetroSound 3 Channel Amplifier Wiring Kit comes with: one 30 amp mini-ANL fuse and quality fuse holder, 13 ft (4 m) of 8-gauge red power wire, 5 ft (1.5 m) of 8-gauge black ground wire, 13 ft (4 m) of 18-gauge blue turn-on wire, two sets of RCA cables, two 8-gauge ring terminals, two 18-gauge butt connectors, and a hex key.

California Proposition 65 Warning: WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information, see the user's manual, or browse our support page.

Full-Range Power Output @ 4 ohms 65 watts RMS x 2 channels @ 4 ohms
Subwoofer Power Output @ 4 ohms 170 watts RMS x 1 channel @ 4 ohms
Full-Range Power Output @ 2 ohms 90 watts RMS x 2 channels @ 2 ohms
Subwoofer Power Output @ 2 ohms 229 watts RMS x 1 channel @ 2 ohms
Full-Range Frequency Response 40Hz - 65KHz
Subwoofer Frequency Response 24Hz - 250Hz
Total Harmonic Distortion <0.2%
Signal to Noise Ratio (EIA rated) >95dB
Bass Boost 0-12dB @ 50Hz
Input Sensitivity 200mV - 6.0 volts
Crossover Slope 24dB
High Pass Filter (HPF) Frequency Range 40Hz - 400Hz
Low Pass Filter (LPF) Frequency Range 50Hz - 250Hz
Fuse* (fuse door on bottom of amplifier) 30 amp ATC Style
Dimensions (inches) 9.4” W x 5.3” D x 1.87” H
Dimensions (mm) 240mm W x 134mm D x 47.5mm H

*An additional 30 amp fuse (not included) must be used on the Battery (+) wire at the battery. The fuse must be placed as close as possible to the positive (+) battery terminal (within 6-8 inches away).