Hi guys. I just opened the amp to see what tubes were inside (had it for a couple months) and noticed three RFTs, ECC83 in V1 and V3 and a ECC81 in V2. I have never seen a ECC81 used in V2. Anyone doing it? I have used it as PI in high gain amps and liked the effect. Btw, the amp sounds gorgeous boosted. One of the best sounds I've ever had.