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Phono stage hum - Rega Aria

Hi folks, trying to solve a hum issue and would appreciate any thoughts. Rega Aria phono stage, into a PrimaLuna Dialogue tube preamp, then to Bel Canto SS mono's. 

With the tonearm NOT plugged into the phono stage, there's a hum.(especially when set to MC vs. MM)
Rega powered off, no hum while preamp at max volume. Turn the phono stage on, there's the hum...I hold the phono stage in the air, 4 feet from everything, same hum. When I hover it over my preamp, the hum gets much louder due to interference. Magnaplanar 1.7i speakers very quiet until that phono stage enters the chain.

Haven't tried a cheater plug...but have tried 2 diff interconnects (Better Cables/Silver Serpent and BJC LC1) from the phono stage to the PrimaLuna, and 2 different power cables (Furutech FP-S022N and factory cable) into a Furman Elite 15-DMi. 

Either this Rega Aria is a noisy phono stage, or I've somehow got a ground loop in there with it. It's really not bad at lower volumes, but sucks when that hum breaks the silence at louder volumes between songs/sides. 
Opinion - is this phono stage a weak link in my system? Maybe it would be fine if I find a way to eliminate that hum. 

JA Michell Gyro TT
Rega RB 808 tonearm
Ortofon Cadenza Black cart
Primaluna Dialogue Premium preamp
Rega Aria phono stage
Bel Canto M500 mono amps
Furman Elite 15-DMi power
Magnaplanar 1.7i

Better Cables/Silver Serpent interconnects
Blue Jean Cables for phono and Maggies
Furutech FP-S022N power/outlet

Cheers, thanks for any advice! 
128x128malmc02

Showing 1 response by conde64

conde64
1 posts
 
Hi I have an Aria Mk2 with exactly the same problem. After months of experimenting, swapping out different cartridges, cables, turntables and loaning various mains conditioners etc.nothing has worked for me. I thought I could live with it but hold on, why should I have to?

I’ve come to the conclusion there is an internal design or component mistake by Rega which is generating the noise. Yes I understand no stage is dead silent but too many people seem to have the same problem. So my question is does anyone have the same MC hum problem with the new Mk3 version? I understand its had an electronics tweak as well as a facelift.

Ultimately I’m going back to the dealer with my MK2 and will do a side by side comparison. If the MK3 shows no improvement with the MC hum noise, then I’m sorry Rega, as much as I love the sound of the Aria, this is a major design flaw and I’ll be buying a better one without the same problem.

Without listening to it yet I really hope the Mk3 steps up to the plate. If they have fixed the problem, then I shall remain a Rega owner.
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