Yes, I have. I used high quality equipment before making my own, and the way I kept on track DIY-wise was to play indistinct vinyl record tracks, esp dialect. When I heard obscure passages a little less obscurely, I did more of the same, and my system kept improving.
Worked for amps, pre-amp, phono, turntable, tonearm mods, and speaker mods. And for cartridge setup.
Worked for amps, pre-amp, phono, turntable, tonearm mods, and speaker mods. And for cartridge setup.