Hi Everyone,   I use the V-DAC II bought second-hand at ~ $200 for a few months now. By means of some recent upgrades of $50-60 now it wipes the floor with my Densen Beat 400 PLUS. Here are the changes: 1. Bought a regulated linear PSU with 2A (4A peak) current - Voltcraft FSP-1122 2. As...

In fact the plates have fairly evenly and densely distributed black spots on grey background, not reddish at all. The spots are so even that from a certain distance actually it looks almost pure very dark grey. almost black. It just reminded me rust.  

I have just bought a used pair of Mullard E95F at $1 :-). Actually it sounds quite nice, but the rusty looking of the middle-section box-like part (I don't know the official name) slightly worries me. This part is pure grey in my Siemens 6AK5W for example. Is this a sign of being too old or too...

After some odyssey rolling through some driver tube options (stock, 6Zh1p-EV, Siemens 6AK5W, Miniwatt EF91) finally I have settled down with the last one the Miniwatt branded (but probably same as Mullard with blue smoked glass) EF91s. They're providing me with just the right amount of plushness...

Hi Everyone,   Does anybody have some experience with Valvo EF91 in MKIII? I have just bought in a local auction a pair at $5. Thanks.   Julius