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Upgrade from Adcom GFP-750?

Having recently added a Bryston 9BSST, I'm thinking about upgrading from my Stan Warren modified Adcom GFP-750. I've been pleased with my Adcom's sound, flexibility and reliability, and I think I'll be even more pleased when the modified unit arrives. But I'm wondering if and how much better I could do within my budget (~$1500, used). I'd prefer to stay with SS. The main contenders are the BAT VK-20, Bryston BP25, and Conrad-Johnson PFR. Would any of these, or others not on my short list, represent a significant upgrade in sound quality? I appreciate your comments and suggestions.

System:
Adcom GFP-750
Bryston 9BSST
Linn Ikemi
Thiel CS2.3
Kimber KCAG ics
Acoustic Zen Satori cables
lmack
lmack OP
11 posts
 
I used the Adcom both active and passive: active for rock, electronic, ambient; passive for jazz, classical, acoustic. I might be willing to increase my budget to retain the flexibility of both options.
danielk141
489 posts
 
You definitely like your Adcom. I think you'll like an Aleph P even more-the Adcom has a circuit design by Nelson Pass, the Aleph P is an all Pass Labs design.
I'm selling my GFP-750 & tomorrow I'll install my Pass Aleph P. It will stay in my system until I try a Pass X1 & come up with the money for one.....
orind
27 posts
 
Well, you are already using a Pass design, so perhaps Pass for the upgrade. Price point is a little off--about $2200 on the used market for an X2.5 or X1 hybrid. I upgraded from the GFP-750 to an X1 and I am very happy.
kek23
48 posts
 
Lmack,why not try tubes? I recently tried a tube preamp to mate with the 4Bst and found the sound quality amazing. Tube preamps let you fine tune or critque the sound that you are looking for by interchanging tubes or tube rolling as some might say. Dont discount tubes to give your amp exceptional upstream data.
Kek
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ivanj
35 posts
 
I'd hold off until I let the Stan Warren mod burn in for a few weeks. The Black Gates he uses have a long "gestation period." Other writers have suggested good options that will always be there.
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