Opinions on Power Regenerators and Tube Amps

Nsgarch.....those items on the floor are mouse traps. Actually there are less of them now than there was when I took those pictures :) Currently, my amp and cd player (with VH Audio Oyiade shielded cable) are in the 20A circuit. VPI, phono stage, and active Synergistic speaker cables and interconnects, are plugged into an Isobar which is plugged into the 15A circuit. I think my power is pretty good.....my house is served by it's own transformer since I'm off the road a bit. My main thing was whether or not the Mesa would benefit from any conditioning or regeneration......or if it is actually detrimental with a tube amp. So, Electroid, you can feed 115V and 120Hz to a cd player and it likes it?

So I'll bet the mice are laughing at you too!

If you MUST use a regenerator, get an ExactPower. They don't work the way the (lowish output) P-300 and others do (which is to throw away the whole AC signal and re-build it). Consequently, the ExactPower can offer 1650 watts from 120V wall current, more than enough to power your entire system. But I still don't think you need one.

Conditioners (any kind/brand) are old technology and bad for sonics. STAY AWAY!

After looking at your system again, I would recommend you plug the amp directly into the the 20A circuit all by itself, and get a used ExactPower SP-15A balanced power unit (plugged into the 15A circuit) for everything else.
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I don't know enough about the VPI chassis to really advise you. Typically, the tonearm leads have five connections: two signal leads (from cartridge left and right) which each consist of a hot and ground conductor, covered by a braided shield connected (along with the ground conductor) to the "ring" of the RCA connector at the phono preamp end. In addition, there is usually a black ground wire bundled with the two RCA signal leads that you connect to the ground lug on the phono preamp. This wire goes into the tonearm and is usually connected to the armwand (if it's metal) in order to shield the internal signal wires inside the tonearm.

If the TT chassis is electrically connected to the tonearm, that should be enough, but if it's separate, then you should run another wire from the TT chassis to the phono preamp ground lug.

What kind of tonearm, cartridge, and tonearm cables are you using, and how do the tonearm cables connect to the tonearm?
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My apologies, this thread is moving in two directions now. Nsgarch, the table is a VPI Scoutmaster with a thick, I believe, mdf chassis. Cartridge is a Clearaudio Virtuoso Wood. The head leads go to a junction box separate from the tonearm where the cables and ground are attached. interconnect is Synergistic Looking Glass. Amazingly, the VPI setup says nothing about grounding. It does say to try a shielded a/v interconnect, if there is hum. Don't wanna do that. I am going to read up on Exactpower, although they are sorta expensive.