Preamp recommendations for under $600.00

Thank you everyone for your thoughtful comments. Yes, I should have mentioned that I am new to the forum. I am just starting a poor man's sound system. I have a Conrad Johnson SA-250 ss power amp arriving any day now. I am looking for some Maggies. Will run an Marantz CD5004. Vinyl will be played on a B&O (I don't recall the model) using a NAD PP2. Sounds like a power condition is important, too.

Again, thank you!

PS: Anyone out there running a Dynaco PAS 3 into a SS amp?

Thank you Viridian. Interesting idea. How many hours of assembly does the Smash (or the TSGG) take, and does one have to be a very skilled with the solder gun?

I am torn between your recommendation of the Acurus R11, and Apt Holman, Jolida JD3000 and a restored Dynaco PAS 3x.

Conrad Johnson SA250, Mangnapan MGIIb, Luxman CD