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Stereophonic 3-channel Class D Power Amplifier

Stereophonic 3-channel Class D Power Amplifier
Part Number:
$ 199.99

If you are shipping to AU, BR, CH, CZ, DE, FR, GB, JP, NL, NO, NZ, RU, SE, or ZA use our Dealer Locator to find a dealer near you.

This unique 3-channel amplifier has two 65 watt RMS full-range front channels for mids and highs – plus a mono channel with up to 229 watts (2 ohms) for a subwoofer – allowing a complete audio system to be built using a single Stereophonic amplifier. Low-level RCA inputs allow Stereophonic to work with any aftermarket radio with RCA outputs. Stereophonic is bridgeable and 4 ohm and 2 ohm stable.

Stereophonic offers exceptional dynamic range for the best possible sound reproduction from your RetroSound® audio system. The full-range channels have a high-pass crossover for use with full-range speakers. The mono channel has a low-pass crossover to fine tune the bass frequencies for use with a subwoofer. A selectable input mode allows switching between 2 and 3 channel operation.

Stereophonic also features low current draw and Class D Digital circuitry. With exceptional dynamic range and low distortion, you'll get the best possible sound from your audio system.


  • 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
  • Built-in low pass (LPF) and high pass (HPF) electronic crossovers
  • Selectable mode switch for 2 and 3 channel operation
  • Works with any aftermarket radio with low-level outputs
  • Dimensions: 12x5.25x2 inches

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).

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