TDA7293 x 4 BTL 350W amplifer PCB ultra reliable !!!

This is the PCB of a TDA7293 x 4 amplifier that can deliver up to 350W of power( at +/-32V or higher).

The design features an unbalanced to balanced preamplifier at the input by an opamp, following by four TDA7293 in parallel and BTL mode of operation.

The board can also be used as a balanced input power amplifier when the preamplifier is bypassed. TDA793 is renowned for its MOSFET output stage to give warm, tube-like sound.

This board contains one channel of audio amplifier only. For stereo application two pieces are required.

Supply voltage : +/-20VDC to +/-45VDC

PCB dimension: 151mm x 82mm.

PCB thickness 1.6mm. Super thick copper ( 75um) is used, which is three times the normal thickness.

Surface finishing : Double-sided solder resist for best reliability and durability !

We provide schematic and part list to customers by email.