headfone
Banned
Now known as alphaman
- Joined
- Mar 21, 2006
- Posts
- 216
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- 11
Anyone out there in DIY-mod-land tear into this unit (or any other Meier audio mid-line solid state amp)? Those familiar with these units may know that these amps all seem to use the LM6171 opamp. I've bypassed and decoupled the heck out of them, as well as installed snubbers.
Some things I noticed that may improve SQ further include...
- Class-A biasing the opamps (AFAICT, the stock unit is not Class-A biased.)
- Stacking the BUF634s (2X). Only one per channel in the stock unit.
- Using different opamp (tho' this may be tricky -- the stock topology may be customized for the LM6171, making rolling opamps difficult)
I tweaked the regs with snubbers, too. Diodes were changed to Vishay SBYV 27-100.
If you've dug into this unit, please share your results.
Thx!
Some things I noticed that may improve SQ further include...
- Class-A biasing the opamps (AFAICT, the stock unit is not Class-A biased.)
- Stacking the BUF634s (2X). Only one per channel in the stock unit.
- Using different opamp (tho' this may be tricky -- the stock topology may be customized for the LM6171, making rolling opamps difficult)
I tweaked the regs with snubbers, too. Diodes were changed to Vishay SBYV 27-100.
If you've dug into this unit, please share your results.
Thx!
