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Audio Research REF 3 and REF 5 Tweaks

Hi,
I was wondering what tweaks have been used successfully with these two preamps? I'm thinking specifically of footers, weights, tube dampers, powercords, etc. I haven't considered tube rolling as from what I've read, the tubes ARC recommends are probably overall the best.

I've tried several products including Vibrapods/Vibracones, and various isolation products from Herbies on my REF 3 with mixed results. (I keep going back to stock.) So far the best tweak has been to purchase and place Herbies Ultrasonic Tube dampers on the two power tubes, the 6550 and the 6h30, in the powersupply. Strangely ARC does not include dampers for these two tubes but the addition of Herbies tube dampers really cleans things up.
I use Solidsteal shelving which have been damped with sand.
So what have you all tried that you think would be a worth whild audition?
Thanks in advance,
Sgr
128x128sgr
scousepasty
106 posts
 
Oreganpapa; The plexiglass top covers can be ordered as an alternative to the 'tin plate' originals. They [plexi]don't ring or rattle, as I've experienced with the earlier material.
Cost for GNS Statement upgrade was $3000+ plus return shipping from UK. New high grade components & piggy backed extras added, wiring shielded and lots of anti-vibration padding can be seen.
Sound is superb and has improved steadily over about 500 hours break-in.
Soon to be replaced by a 40th Anniversary, so we'll see what that brings to the party!
I've always checked tubes if I move any equipment and have often found some do loosen-up during moving.
oregonpapa's avatar
oregonpapa
2,850 posts
 
Sgr:

I heard an improvement in overall air with no degradation in the bass at all. I removed the top covers in both my Ref 3 and the new PH-8. By the way ... the PH-8 now has 220 hours and is killer! According to my trusted source, the PH-8 will continue breaking in for 600-1000 hours. Zowie!

Scousepasty ...

Thanks, I'm going to call ARC to ask about the cost of the clear covers.
sgr's avatar
sgr OP
689 posts
 
Let us all know how much the new coverss are.
gpgr4blu
810 posts
 
It is $250.00 if you don't buy it with the unit.
scousepasty
106 posts
 
Gpgr4blu, think you've put your decimal point in the wrong place or the price of plexiglass has risen faster and higher than the price of copper!
Mine were $25.00 dollars if bought afterward, no charge if ordered with the units.
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