Jonathan, were Andy's (Hooper/Quint) amps "treated with an aftermarket product", since according to some recent posts of his on AA both had problems and he switched to other amps? What do you mean by "treated"? Are you referring to some kind of non-approved line conditioning used? Or are you saying such amps were internally modified? Has a notice been included with all amplifiers shipped, to the effect of warranty being voided by doing so?
According to your post the Dartzeel preamp has not yet shipped, yet you showed it at RMAF and at CES with the Dartzeel amps, and privately at last January's show. So quite a few people have heard it in a couple of settings.
According to your post the Dartzeel preamp has not yet shipped, yet you showed it at RMAF and at CES with the Dartzeel amps, and privately at last January's show. So quite a few people have heard it in a couple of settings.