I have a McIntosh MC-60 amplifier that I need a new phono preamp for, preferably tube, but I can't spend more than $1000. The choices seem endless and I'm not knowledgable or patient enough to sift through all of the possibilities out there. Can you guys give me some advice? I'm mainly into mono recordings from the '40s, '50s, and '60s, using CDs and vinyl/shellac at all the speeds. Any help appreciated!