Check out a McIntosh C46 or C42 preamp. They are all analog - no digital circuits - and sound fantastic. Their EQ is extremely well made with bass controls that are in just the right spots. I have a C42 and have not been able to detect any real coloring when the EQ is in the circuit, other than the expected change in tonal balance. When you don't need it, it is totally removed from the circuit. I love what it can do to my poor recordings of great music.
If you are looking for an integrated, look at the McIntosh MA6900. It has a 5-band rather than an 8-band but it may also do what you want.
Arthur