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

Showing 3 responses by oregonpapa

I've tried various tweeks with my Ref-3 that normally work on other equipment, but not on ARC stuff. All of my ARC equipment )REF-3, CD-7, and PH-7 sound best by using nothing except the stock feet. The high end fuses improve the sound and using Pro Gold on all interconnects AND the tube pins make a definite improvement. I even Pro Gold the fuses. I tried various tubes, like classic Mullards in the PH-7 and found the stock tubes sound best.
I've been told by a trusted friend that removing the covers from the ARC preamp and the phono stage is a significant improvement. I'll try it tomorrow and report back. I have a couple of audio enthusiasts coming over for a listening session so we can compare notes. By the way, placing a VPI brick on top of the phono stage helped a little too. With the cover removed, that eliminates that option. We'll see.
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.