I don't know how they'd be in your VT-130, but in my VT-100, I love the ElectroHarmonix 6550s. Depending on your taste, if you like a real laid back sound, they might not be to your liking. I tried Svetlana KT88s in the VT-100, and I was not impressed. They were too distant and rolled off and the bass was not nearly as strong. I have a source to get the EH 6550s from, so email me if you decide to go that route. I, too, would be careful with using KT88 or KT90 in AR amps. Too many people have had resistors blow out with them.
power tubes for ARC VT130?
i've retubed my LS 5 w/ 7308s & was stunned by the improvement. i then changed out the 6922's in the input stage of my VT 130 & obtained a similarly huge improvement. it may be my imagination but i'm convinced & hooked. now i'd like to change out my 6550s. what brand or types should i look for? also, any ideas on how to get explicit info on how a newby could rebias this amp?
thanks,
jon
thanks,
jon