SUGGEST you look for a used Audio Research pre-amp. There is a reason that their early ones sell for many dollars. I was able to buy an SP-6B for around $800 and it is amazing. You may have to look a while or raise your budget a few dollars, but you will be very pleased if that is the sound you are looking for. They have produced the industry standard pre-amps (not EVERY one) for almost 50 years.
Cheers!