oh, sorry. when I wrote buffer, I meant gainstage which would compensate for any loses. I don't want any complex EQ, just a simple three band and an either opamp or transistor/FET gainstage. I hope you could give some design, because I'm quite bad at designing circuits. Or any literature, which could help me do it. Thanks 
Hi Guys
Minoin's idea is a good one. On the other hand, Mnvizb did not say what technology his amp is: tube or solid-state?
Just as a point of interest, typical tone stacks cut the signal by a factor of 5-10, so you need make-up gain of a similar range. A single triode, BJT, jfet or mosfet easily produce this much gain, but you have to know the signal sizes involved to make the right choice.
Another point of interest with respect to cathode-driven tone stacks in guitar and bass amps: everyone copied Fender, who in their Bassman head experimented with a CF. This was to improve how well the active mixing stage could drive the feedback loop and the EQ. This was a very early model before the version Marshall copied.
The feedback loop around the second stage was removed but the wiring was already being done with the CF, so the CF stayed. The follower is a "remnant" of a discarded Fender design.
Cathode-driven EQs tend to lack adjustment range and sound lifeless. Plate-driven EQs are far more dynamic and the controls _do_ something. If you rewire the follower in a Marshall to either be bypassed or to double the stage preceding it, most players will find the amp more lively and smoother sounding. As with all myths that are widely believed, if you then say you bypassed the follower, the player will appear less happy - since belief in a myth is more important than belief in one's hearing.
Have fun
Kevin O'Connor
londonpower.com
Minoin's idea is a good one. On the other hand, Mnvizb did not say what technology his amp is: tube or solid-state?
Just as a point of interest, typical tone stacks cut the signal by a factor of 5-10, so you need make-up gain of a similar range. A single triode, BJT, jfet or mosfet easily produce this much gain, but you have to know the signal sizes involved to make the right choice.
Another point of interest with respect to cathode-driven tone stacks in guitar and bass amps: everyone copied Fender, who in their Bassman head experimented with a CF. This was to improve how well the active mixing stage could drive the feedback loop and the EQ. This was a very early model before the version Marshall copied.
The feedback loop around the second stage was removed but the wiring was already being done with the CF, so the CF stayed. The follower is a "remnant" of a discarded Fender design.
Cathode-driven EQs tend to lack adjustment range and sound lifeless. Plate-driven EQs are far more dynamic and the controls _do_ something. If you rewire the follower in a Marshall to either be bypassed or to double the stage preceding it, most players will find the amp more lively and smoother sounding. As with all myths that are widely believed, if you then say you bypassed the follower, the player will appear less happy - since belief in a myth is more important than belief in one's hearing.
Have fun
Kevin O'Connor
londonpower.com
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