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Technophonic 5-channel Class D Power Amplifier

Technophonic 5-channel Class D Power Amplifier-RetroSound
Part Number:
$ 299.99

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 powerful 5-channel amplifier has four 65 watt RMS full-range channels for mids and highs – plus a mono channel with up to 330 watts (2 ohms) for a subwoofer – allowing a complete audio system to be built using a single Technophonic amplifier. Low-level RCA inputs allow Technophonic to work with any aftermarket radio with RCA outputs. Technophonic comes with a wired remote gain control module that allows you to adjust the bass output on the fly.

Technophonic 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 4 and 5 channel operation.

Technophonic 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 4 channels full-range @ 4 ohms
  • 225 watts RMS x 1 channel subwoofer @ 4 ohms (330 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 4 and 5 channel operation
  • Works with any aftermarket radio with low-level outputs
  • Includes wired subwoofer remote gain control
  • Dimensions: 8.25x5.25x2 inches

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

Full-Range Power Output @ 4 ohms 65 watts RMS x 4 channels @ 4 ohms
Subwoofer Power Output @ 4 ohms 225 watts RMS x 1 channel @ 4 ohms
Full-Range Power Output @ 2 ohms 95 watts RMS x 4 channels @ 2 ohms
Subwoofer Power Output @ 2 ohms 330 watts RMS x 1 channel @ 2 ohms
Full-Range Frequency Response 40Hz - 65KHz
Subwoofer Frequency Response 24Hz - 250Hz
Total Harmonic Distortion <0.2%
Bass Boost 0-12dB @ 50Hz
Signal to Noise Ratio (EIA rated) >95dB
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
Fuses* (fuse door on bottom of amplifier) 30 amp ATC Style (x2)
Dimensions (inches) 12.9” W x 5.3” D x 1.87” H
Dimensions (mm) 330mm W x 134mm D x 47.5mm H
*An additional 60 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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