2 Transistor BT for low and medium range audio board, 2 Transistor BT for high end
This is an optimized version of the passive preamplifier tone board, the circuit uses the optimized version of the high and low tone adjustment circuit, the sound details rich.
Passive design, no ground loop at the end of the problem! And independent design with shielded ground, and audio signal ground completely separated, the clutter will not chaos string!
Working Volt – 12V, Input , Output channel : 2 channel stereo
