2. amps-preamps
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Amplifier is now off the Power Conditioner

Yesterday, I replaced the wall outlet that my audio system uses to eliminate the switch on the bottom plug. Until now my tube amplifier had been plugged into the amplifier plug on my power conditioner, but now it is connected to the second plug via a basic surge protector.

I have b read that power conditioners are restrictive for amplifiers, but my first impression tonight was "wow". I doubt the wall outlet made the difference and it is possible that it was a good audio night (sometimes things just sound better for no known reason) so I will have to remain open minded for now.

It seemed that things are more clear, almost edgy, and the bass tightened up.
mceljo

Showing 3 responses by georgehifi

georgehifi's avatar
georgehifi
10,312 posts
 
Lowest impedance path all the way back to the mains generating source is the best thing for unregulated poweramps power supplies.

If you have the knowledge or experience you can do this yourself, if not please get an electrician to do it.
The best way to power amplifiers, is to have a dedicated mains circuit for your amps, and a good heavy duty contact mains fuse for it, I prefer the old fashion ceramic push in with fuse wire instead of circuit breakers as they have very beefy brass contact wipers, where circut breaker do not, as they have a switch wiper inside them, as well as the weaker push in contacts.
And get your electrician to tighten all contacts (active neutral & earth) while he's at it before and after the meter box.

I even got the electricity suppliers to come out to clean and tighten the barge board contact to the house and where it connects the the mains line as well, as these get green and compressed and get loose with age. and should be cleaned and re-tightened as well.
The difference was quite stunning, especially in the bass.

No mains conditioner/regenerator can make up for these high resistance problems above.

Cheers George
georgehifi's avatar
georgehifi
10,312 posts
 
Lewinskih01.
Looking at Thaluza's experience.
I would put the Furman P-2400 IT at the top of your list, as your MC275 will draw even more current that a S.E.300b

Cheers George
georgehifi's avatar
georgehifi
10,312 posts
 
Powersupply conditioners are usually ok for equipment have regulated power supplies, sources like cdp's, phono stages, preamps tuners T/T etc;

But for most poweramp/s their output stages are not powered by regulated supplies, they're just rectified, these supplies need to be "stiff" (low esr) right back to the mains, and by introducing a power conditioner, they usually no longer remain "stiff" and the bass tightness will suffer in most cases, and sometimes the dynamics as well.

Only one poweramp I can think of that had a regulated supply for it's output stage, was the Naim 250, I'm sure there are a couple of others, maybe the big Halcro poweramp for memory as well.

Cheers George
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