For my MC-501 amps they get a dedicated 20A line > then a Shunyata Hydra 2> then plugged into the wall outlet. (all with Shunyata shielded high end power cords.) In the adjacent outlet I have a RGPC 1200S plugged in.


For my preamp/processor and sources they also get a dedicated 20A line > then a Shunyata Hydra 6> then plugged into the wall outlet. (all with Shunyata shielded high end power cords.) In the adjacent outlet I have a RGPC 400Pro >

Then I have another 15A circuit for misc things like wireless bridges, IR repeaters etc

I now have very quiet power and no hum at all!

Michael

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MC-501 (2), MC-7106, MX-119, MS750, modified Denon 3910, Oppo BDP-83, Museatex Bidat DAC (updated), VA Mahler, Oratorio and Waltz. REL B1 sub. RGPC 1200s, 400pro. Hydra 2 & 6, 2nd system: C712, MC-7270, Museatex Bitstream DAC (updated), LSA1 Monitors

Dedicated 20 amp 240v. Torus rm20 240v. The nice thing about balanced in is the balanced power cord, which is prob better than most aftermarket 120v power cords for noise rejection. Plug it all in to the Rm-20, including source. Use a Blue circle line pillow for parallel filtering on the back of the rm20.

You can use a Kill A Watt model P3 AC line monitor on your various pieces of gear to see how many amps or watts each piece uses and also monitor the AC voltage. These are a good cheap tool.
Very educational and will help with planning how you run all of your AC connections. Most big McIntosh systems take less average power than a Plasma TV in normal use.

Thanks,

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Ron-C

Hello Folks

Here is an interesting take on power req for amplifiers by James Tanner of Bryston. He uses his own Torus as the example but it does apply to other makes like the Isoclean.

"It's a tough question to answer because there are many types of power supply designs out there and the Torus would definitely help on some (EX: switching supplies). If your just looking at 'noise' on the line any well designed power supply will reject noise reasonably well.

I guess my best advice given Bryston gear would be that the 'Source' gear (CD player, Preamps etc.) have very good linear power supply design and putting a Torus in front of them for noise reduction purposes 'only' would not provide that much better performance.

With power amplifiers though it is a completely different story. The Power amp wants to draw huge amounts of current on musical transients and the wall plug can not supply it due to the wall plugs high impedance. The Torus is designed to provide these transients with instantaneous current when required. So the ability to deliver the current on short term demand is the main advantage of the Torus Isolation transformers.

The other main benefit of the Torus is Spike and Lightning Surge protection using Series Mode Surge protection (NOT MOV's - which are sacrificial components)

As for noise the Torus Isolation transformer will start to filter noise at about 2K whereas most simply filters do not start filtering till above 10K"

james« Last Edit: 9 Oct 2008, 12:15 PM by James Tanner » Logged James Tanner

He just points out that average power doesnt tell the whole story for AC delivery to power amp.

plugged directly into the standard 15 amp wall socket using McIntosh provided power cord and 'audio grade' receptacle only

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System 1: McIntosh MC302, MA6600 w/T2, MCD500, Denon DP-72L w/Grado Reference Platinum 1
PMC OB1i, Vienna Acoustics Concert Grand
System 2: McIntosh MA6500, MCD205, MR85, bel canto Dac, MacBook Pro w/AE
McIntosh LS320 - PS112, Klipsch Heresy III

Dedicated 20 Amp Line, Soloist Premier, shielded power cord, with hospital grade plug, to amp

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Chuck


McIntosh C2200, MC352, MR78, MS300, MC275, MVP871
PMC OB1 Speakers, JBL L56
Bryston BDA-1 DAC, Bryston 10B crossover, Bryston BDP-1
Rega P3-24 w/ TTPSU ,Ortofon 2M Black Cartridge, Groovetracer Reference Sub Platter,and upgraded Rega belt
JL Audio F112 Sub, Sony HD Tuner(modified)
PS Audio Soloist Premiers, Power Plant Premier, and Noise Harvesters, Alan Maher Design Filters
Aural Harmony, Black Mountain Interconnects, and Wireworld Speaker Cables, Symposium Roller Blocks, and Fat Padz, Custom made switch box.


Yesterday is history.... Tomorrow is a mystery.... Today is a gift.... That's why its called the present!

I have two dedicated 20 amp circuits and run my entire system thru a Furman ref-20. It is an isolation transformer rated for 20 amps and momentary peaks of 80 amps. It also filters noise. My system is modest so it is more than ample. MA7000, Supernova cdp, tuner and Thiel 2.4's

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System Marantz MA9S2, SC7S2,SA7S1, Thiel 3.7's, Nordost, Furman 2ea Elite 15i

I've looked at his Torus iso transformer and it reminds me of the Furman Ref-20i. I wonder if Furman makes it for Bryston ?

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System Marantz MA9S2, SC7S2,SA7S1, Thiel 3.7's, Nordost, Furman 2ea Elite 15i

for some reason all my Mc gear and even my SACD player sounds better plugged straight into the wall. The voltage seems quite stable in my house so that may help the situation.

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MA2275, MR71, Harbeth P3ESR, Esoteric DV50s, J.A. Michell Orbe, SME 309, Ortofon 2M Black

My 501s share a 20A dedicated circuit comprised of 2/C#12 shielded wire from a Hubbell hospital grade duplex back to the panel. I have surge protection at the panel. Does the shielded cable make a difference? Well of course it does silly

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What, me worried? You damn right I'm worried!