Assembled boards

DC-Coupled Low Noise Stereo Preamplifier - Assembled DIY Audio Module

Vishay High Speed Low Loss Diode Module Power Rectifier

10W SE MOSFET Class A Stereo Power Amplifier Assembled

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Stereo tone control low noise preamplifier NAD 3020

Low Noise Passive Stereo Tone Control Board - Assembled

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Tube PSU and Filament Soft Start Circuit Board Assembled

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Passive stereo tone control w/ loudness button assembled low distortion

Speaker Protection Board Assembled with Omron Relay - Low Loss High Reliability

img{max-width:100%}   This is a speaker protection kit to be inserted between the power amplifier and loudspeakers. The functions include : delay switch, DC protection, and immediate detachment at...