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Technophonic 5-channel Class D Power Amplifier

Technophonic 5-channel Class D Power Amplifier-RetroSound
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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

Optional Wiring Kit

The RetroSound® 5 Channel Amplifier Wiring Kit simplifies the installation of a sound system in your vehicle by adding all of your supplies in to one convenient kit. It includes all of the cables, wires and connectors that you need to get your 5 channel amplifier installed. The RetroSound® 5 Channel Amplifier Wiring Kit comes with: one 60 amp mini-ANL fuse and quality fuse holder, 4 meters of 8 gauge red power wire, 1.5 meters of 8 gauge black ground wire, 4 meters of 18 gauge blue turn-on wire, three sets of RCA cables, two 8 gauge ring terminals, and two 18 gauge butt connectors. 

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 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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