Any opamp rolling gurus subscribed here ?
I'm looking to drop a custom opamp in a Matrix DAC M-stage soon.
I've been told that OPA2209, OPA1642 and OPA602BP are nice upgrades but not specifically for synergy with the 400's.
Was also told that 627's and 637's not good drop-in opamps for Matrix hardware even though a lot of ebay sellers offer them as rolling options in their listing....something to do with a mis-match in speed design I believe.
My aim if possible is to tame the treble a bit at the amp stage. I may also upgrade to the 500's in future, therefore trying to find an opamp that would be good for the 400's and 500's....and I read bumping the M-stage +10 gain is OK for the 500's so I do like the flexibility of this amp.....(opamp rolling and gain control)
Though given how cheap the dual opamps are, I could buy one more suited for the 500's later.
Ideally I would like the emotiva speaker amp but just not practical for me right now, plus seems there are only 2 retail avenues for international shipping on the 5KG Emotiva amp...so that upgrade option is on ice just now !
Total cost inc. opamp upgrade will be 190 pounds or $295 from ebay so I'm also open to diverting the cash into any kind of DAC/amp of this size/price that is better value as well for a 400/500 pair up that I've maybe not managed to dig up on head-fi........(Schitt stuff being out due to voltage.)
Edited by Lohb - 6/22/13 at 8:39am