For me the best lamp preamp world. To the metal anyway. I yucky 3 Sovtek preamp from Tung ground, I do not want to hear about it! It is V1 to handle the saturation ... Besides I tried a Sovtek JJ goldpin V1 .... inconclusive, JJ has finished V2 to handle the equalization, role which will certainly please. Take in some BALANCED version kopeck more anode & the triode will be balanced.