This listing is two pieces of bare PCBs of a pure class A MOSFET amplifier, output power 30W at 8 ohms loading. The design is based on ALEPH 3. This is another board incarnation of this well proven amplifier. For those who want the boards to be wider and longer in dimension, please check "30W Class A Single-Ended MOSFET power amplifier PCB !" in our shop. The design features single-ended MOSFET class A output, loaded with constant current source for excellent linearity and dynamic performance. Using 4 pieces of power MOSFETs, 2 pieces as output and 2 pieces as current source, the amplifier can offer 30W of uncompromised class A power. The boards are fabricated with 2.0mm thick fibre glass(FR4) , super thick copper and double sided solder resist coating for best reliability and durability. PCB dimension : 182mm x 45mm ( each channel). PCB thickness : 2.0mm. Copper thickness : 75um -- FOUR times normal process of copper thickness. Tin plated surface. We provide schematic and part list to buyers by EMAIL( to be attached with the shipment notice). We do air shipping worldwide at US$6.00. We welcome combine shipping. For all of our items, we commit a one-day handling time. Normally the items will be posted in 24 hours ! Powered by SoldEazy