i think sa manufacturing process nagkakatalo yung pricing nila.
kasi in creating tube amps, kelangan talaga may totoong tao na involved, maybe like inserting the tubes sa socket, soldering the socket pins to the wires etc. not to mention na napaka inconsistent ng mga tubes kaya siguro kelangan pa nila testingin isa isa yung mga tubes, then they have to throw away bad tubes, which they already paid for.
solid state amps kasi, pwedeng gawin ng robot. mag design lang sila ng PCB layout, tapos program nila si robot, then ayun tuloy tuloy na, sobrang consistent pa ang quality, kasi the IC's they are using also came from a factory na puro robot ang nag mamanufacture, tapos lahat ng ISO certification meron yung factory na yun kaya di kelangan mag alala sa consistency ng quality.
my 1 Peso