I've got this amp from a webstore, the sound is very good, maybe surprising good.....but I've experienced some problems I've described in this short clip.
http://youtu.be/0Izk6BCEHZE
1) hum on voicing III I've found on the web some DT's has a lot of hum on voicing III, especially in classA and pentode mode, as mine....some other owners says this voicing is quit....someone suggest to change the stock tubes 2) white noise in low volume mode at maximum level, especially in voicing III but also in I and II...why? 3) no sound in low volume mode until the volume pot came at 10 o'clock (I've read low volume level merge dsp at start and tubes at the end, why it starts at 1/3 of volume pot corse? is this normal?)
Is this normal or I have to return this amp to the webstore?
thanks in advance