If the KT150's work in the 75, 150 and 250 and they do, why do you need modifications to make the change optimal? I suspect most of the benefit is in the tubes themselves and they are cheaper to buy at Upscale Audio. You would need some brave soul to compare a cooking version of one of the ref series amps, that amp with KT150 tubes and a factory modified SE version.
It does sound a great deal of money to me, but it seems to explain why ARC has refused to say if the 150 tubes will work in the Reference series amps, for the last year. Sorry if this offends you ARC fans out there and I do love my Ref 75, but the company's main aim does seem to be to wring the last bit of cash out of loyal customers, they can.
It does sound a great deal of money to me, but it seems to explain why ARC has refused to say if the 150 tubes will work in the Reference series amps, for the last year. Sorry if this offends you ARC fans out there and I do love my Ref 75, but the company's main aim does seem to be to wring the last bit of cash out of loyal customers, they can.