Tube amp forethought


Hello, im researching my retirement two ch audio system and tube amps are in the forefront of my “wants” my plan will be a pair of QUAD ESL’s not sure which just yet

What do i need to know about maintaining a tube amp, like a AudioResearch 120 for starters or other tube amps. Biasing is totally new to me. Tube life and modes (triode, Pentode, UltraLinear) all foreign to me.

im a 40 year hobbiest so im pretty versed, this is just an unknown territory for me, thanx guys !

kgveteran
@bdp24 that was a good score on the amp. It looked really clean. FWIW Roger uses the 8 ohm taps with his RM-10 but as he would tell you, try it both ways and use the tap you like best.
Kinda seems like this thread dropped off the face of the earth. Here's my .02 - I put together a retirement system incorporating tubes (in the preamp) and Quad ESL 2805 speakers. I previously used ESL 63 speakers, and they are wonderful. After some futzing around with SS power amps I put a Quad 909 in the system to power the 2805s because it won't be destroyed when I trigger the clamp circuit. I also use and enjoy an Innersound Electrostatic amp, which is capable of driving rediculously low impedences. It is a Beast with loads of instantaneous power but it doesn't like dumping all its power in a microsecond when the clamp boards are triggered.
For high volume listening (ya' know, when ya' just gotta get above, 95 db or so) I use JBL 4430 studio monitors. Which are just about perfect "all rounders". Yes I know there are other speakers out there that equal or better the JBLs.
It seems the OP wasn't buying the tube lore - posted a few days later looking at a Krell KSA250! 
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