Improvements are as described by Lmack and Ritteri. I would not recommend just swapping out the caps yourself since the values used by Stan are not exactly the same as used by the mfg. However, the improvements are noticible immediately and the unit will continue to improve. I almost always used it in active mode, which I believed provided more lifelike dynamics. The preamp was bettered overall (in my system) by a Muse Model 3 Signature. - Good luck.
Adcom GFP-750 Modfication Question
Has anyone had their Adcom GFP-750 preamp modified or heard one thats been modified by Stan Warren at Supermods in Eugene,Oregon?
If so, does it make a big improvement?If so, in what ways?
What all does he do to it? Or, am I better off keeping it stock from the factory?
If so, does it make a big improvement?If so, in what ways?
What all does he do to it? Or, am I better off keeping it stock from the factory?