It's a disease: Gear Acquisition Syndrome (GAS) I now have 3 of these: A DB-1, DB-1A and DB-1B, The upgrade from 1 to 1A involves improved RIAA (.04 dB) and complete retest. Includes gold plated phono jacks (2) and diamond cut solid aluminum knobs. The 1A to 1B involves new lower noise high level stage, Alps 80 dB volume control, 6 dB better channel separation, all gold plated jacks, solid oak cabinet with new front panel. So I'm working on the original purchase, a 1A myself. Changed out all