Complete soldered pair of Aca pcb boards with high quality parts.The 10Kohm input resistor Sinkoh,other resistor come from Takman metal film and Panasonic metal oxide.The capacitor are.Mundorf Mlytic Ag,Panasonic Fm and Nichicon muse.I have used this boards for more than two years without problem,the pcb are ready for 24V supply,I made the 2,2kohm resistor mod and 39kohm on input to ground.This boards are for someone that would like to have verry good class A amplufier but for low price.You only need some enclosure,psu and conectors.The price would be 120euro plus shipping or best offer.