Unbalanced to balanced stereo assembled board ultra low distortion DRV134PAx2 !

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$19.99


This is an assembled board of a very low distortion preamplifier ( Gain = 2) that can convert an unbalanced signal to a balanced signal.

The circuit make uses of a famous balanced line receiver DRV134PA per channel. The chip can offer a distortion as low as 0.0005% at 1KHz and 0.001% in the whole audio frequency band( below 18KHz) when driving 600ohm load ! Maximum swing can be 18Vrms at 0.01% distortion ! The gain is fixed at 6dB ( 2 times).

Supply voltage : +/- 5v to +/-18V.

PCB board thickness : 1.6mm

Copper thickness : 70um. This is four times normal board copper thickness !

Surface finishing : Gold plated and coated with two-sided solder resist for maximum durability.

PCB dimension : 52mm x 52mm.


The assembled board consists of 2x DRV134PA, 4x Nichicon FW10uF 50V( or Beyschlag Centralab - formerly Philips - 10u 100V) e-cap and 4x 0.1uF 100v film cap for decoupling purpose. As the circuit is too simple we do not provide schematic.

Note : The board in the picture shows the component's outlook for reference. The DRV134PA to be delivered do not necessarily to have the same date code or marking as in the picture.

We do air shipping worldwide at US$5.00.