PASS F5 25w A class amplifier Do It Yourself Kit. This kit have everything what you need to make your own A class 25W amplifier.
The output transistors must be mounted on heatsink and heatsinks are only components which are not included in this kit.
Output Fet’s are fqaf12p20/fqaf19n20 which are more expensive than irfp 9240 / irf240 and final results can not be compared …
FQA pair sound much much better and in comparison with irfp, there no noises…
All lines are on one side , so there no passive capacitance.
Kit is designed without wirewound resistors so, passive inductivity is minor.
Except output resistors all other are from Vishay dale or Panasonic.
Driver transistors 2sj74/2sk170 are from China , but they are good and functional . All other components are genuine . If you need genuine matched transistors , please visit components selling page .
Transformer: For max. output it need (2x 18-0V) 300-400VA per channel
pcb is FR4 1.6mm 2oz Blue Immersion sillver the best and the most expensive pcb technic (immersion silver which need to provide the best connectivity and audio quality )