This is a kit of class A amplifier with ultra-fi sonic quality. The design is with reference to the legendary design by Jean Hiraga published in L'Audiophile. This amplifier is the "Hiraga super 30W class A". With good heat dissipation, this amplifier can deliver 30W(+/-24V DC) of pure class A amplification.
Features : This is our updated and improved version. The low level section is constant current loaded, and fed by good-sounding Kubota regulator. In bench test and listening test, the amplifier has substantial improvement in speed and distortion performance in high frequency register. The noise and distortion is substantially lower. Sonically , comparing to the original design, it has a darker background, cleaner and more tranparency.
We attached some of our bench full power output measurement results in this listing.
The board is partially built with all the resistors being soldered , except the two pieces of output transistor emitter degeneration resistors.
PCB thickness : 1.6mm.
PCB dimension : 90mm x 97mm
Copper Thickness : 75um ( four times normal thickness !!) tin-plated.
Finishing : Double-sided tracks, double-sided solder resist coating for best reliability.
The kit contains one channel of amplifier. For stereo application two sets are needed.
We do air shipping worldwide at US$7.00.