This is a bare PCB of a tube preamplifier with the gain section reference to MFA reference. MFA Reference was well-regardless as an preamplifier that has massive soundstage and rich of low-level musical information. Each board consists of two channel thus one board can be used for stereo application. We provide schematic to buyers by EMAIL. PCB Dimension : 220mm x 155mm
Board Thickness : 2.3mm ( super thick !!)
Copper thickness : 75um ( 4 times normal thickness) ; tin-plated surface.
We do air shipping worldwide at US$7.50.