I loved my old MFA Magus. Not in good repair at the moment but when it was good it was very good. I'm looking to sell it if someone wants a worthy project. Or I'll get it up to specs and then sell it. I had issues with my power amp so switched to an integrated to simplify my electronic life.
It is a good idea to purchase a vintage tube pre-amp.
Since the new one are pretty expensive and what I can afford is an old one with budget of US$2000~3000. Since I don't have much knowlege on electronics, but I have authentic listening capabilities. Is it good idea to buy an old gear of tube pre amp. around 10 or 15 years such as Audio Research SP-15 or something similar (the newer one within my budget is better of course). I would prefer a stable, long time use gear without much trouble.