Any idea as to what tubes the reviewer replaced the stock ones with?
aa
Also, a novice question. Is the I2s input the same as the I2s input on the Perpetual Technologies P3-A? I would guess so, but the USB designation mentioned w/ I2s here has me concerned as to what it is, and if it is different. I'm thinking of running my P-Tech P1-A into the mod'd DAC 60 via I2s instead of the P-Tech DAC.
Thanks.