CleanAMP Stereo Amplifier

CleanAMP is a 100W (music power) Class-AB low noise audio amplifier kit perfect for converting your favorite set of speakers into a Hi-Fi Stereo sound system. The kit is comprised entirely of through-hole components and is capable of providing 2 channels of crystal clear audio at 35Watts RMS per channel.

Price: $29.95 MSRP 

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CleanAmp Frequency Response

Frequency Response







More Information

The frequency response tapers off nicely at the edge of the audible range to reduce the amount of power wasted reproducing inaudible sounds.  This also reduces distortion since most speakers’ impedances vary wildly at very low frequencies.

Additionally, the CleanAMP has an Anti-Thump time delayed relay to nearly eliminate the “speaker thump” that is heard when many amplifiers are first powered.

When coupled with a quality power supply and proper grounding/isolation to reduce common-mode noise, the CleanAMP is extremely quiet.  At full-volume, there is very low noise/hiss audible from the speakers.


This quality audio amplifier provides:

  • Input: 48VDC 2.4Amps (46V Min, 50V Max)
  • Output: 2 x 32Wrms@8ohms or 2 x 35Wrms@4ohms
  • Gain: 47x [~33dB] (i.e. 1V p-p input gives 47v p-p output) and can be changed by swapping 2 resistors (minimum 16x [~24dB])
  • THD: 0.00215%, 1KHz @ 20Wrms

Assembly Instructions


Hacks / Customizations


Here is a link to the CleanAMP Schematic.


Having issues

Want to modify or improve the design ?

… Well then Visit the support forums.