I bought a Creative X-fi that has RCA inputs and outputs plus a bi-directional USB interface with the computer. It serves as both a DAC and an ADC if you want to do needledrops. Good value for a combined unit, and unlike most such, doesn’t make you pay for balanced microphone inputs and preamps. $125 new from Amazon
Pioneer SP-BS22LR speakers, $100 for the pair, new from Amazon.
Kenwood C1 preamp, includes a phono preamp, a tape loop for the X-fi, and a good sound. $120 from eBay.
Adcom GFA-535, 80 wpc but more like 100, excellent sound. $120 from eBay.
That leaves money for 14-gauge copper speaker wire and cheap-but-shielded RCA interconnects off Amazon.
That is the system I’m running in my office right now. It really sounds excellent—I can’t imagine a better $500 system.
Edit: didn’t realize this was a necrothread. Oh, well.
Rick “a mix of vintage and new” Denney