I’ve used a Parasound JC3jr, Herron, and PS Audio Stellar in that order with my 1200G, with an Ortofon Quintet Black cartridge.
The Herron sounded best, with the PS Audio an almost dead heat second. I kept the PS Audio pre because I have their BHK preamp, DSD DAC, and BHK250 amp. I’m quite happy with it.