Originally Posted by
Barry
I've never found tone controls to be of much use: the Baxandall design of tone controls is too crude to be effective, and the range of 'cut' and 'boost' far too large (as much as +/- 12dB). Most of the preamplifiers I have used have a tone control "defeat" switch, whereby the tone control circuit is bypassed, and these days the pramplifiers I use are devoid of such controls.
The only tone control circuit design I have found to be useful (on the rare occasion), is the "Tilt" feature of the Quad 44 (and later designs). With this control, the whole frequency spectrum can be tilted about 1KHz either up or down by +/- 1, 2 or 3dB. The latter is too much, but I have found tilting the response up by +1dB can help with rather "thick" - sounding recordings. Not a panacea by any means, but occasionally useful.