Bare PCB:  just one PCB.  not include other parts

DIY KIT:   inlcude all parts. will need youslef to solder it

Assembled board:   we will solder and test it well before shipping.

PCB Size:  87X70MM

works voltage: Dual AC12-18V

Purpose:

Used for CD player or preamp output, enabling it to have balanced output function. Alternatively, it can be used for later stage amplifiers to provide complete bridging functionality.