If you have a tape loop, and you are only going to use this EQ on poorly recorded CD's, get something simple and inexpensive, put it in the tape loop and only put it in into the chain when necessary. You are already getting compromised sound with the poor CD, why waste your money on a fancy solution.
I have no experience with the EQ's you mention. The last one I owned was a 10 band (each channel) Audio Control - fairly decent unit. I now keep a Perreauz 3 band tone control in my tape loop for bad lps and cd's, but don't seem to use it often.
Conversely, if you going to put it between the amp and pre-amp, which I would not recommend, get the best you can afford if you are at all fussy about your audio.
I have no experience with the EQ's you mention. The last one I owned was a 10 band (each channel) Audio Control - fairly decent unit. I now keep a Perreauz 3 band tone control in my tape loop for bad lps and cd's, but don't seem to use it often.
Conversely, if you going to put it between the amp and pre-amp, which I would not recommend, get the best you can afford if you are at all fussy about your audio.