Hiraga 8w A class amplifier Do It Yourself Kit. This kit have everything what you need to make your own A class 8W amplifier.
The original Hiraga Amp transistor are replaced with 2SC1845+2SA992 and on output MJL21194G+MJL21193G which is the best replacement for originals.
The output transistors must be mounted on heatsink and heatsinks are only components which are not included in this kit.
Decoupling capacitors are from Nichicon Muse series, so everything is designed to satisfy very rigorous standards.
Transformer: For max. output it need (2x 9-0V) 40-50VA per channel
pcb is FR4 1.6mm 2oz Blue ENIG (immersion silver which need to provide the best connectivity and audio quality , this type of boars is also most expensive)