I have a few cans (AKG K240 S, K240DF, K240M, K280, K290, K340, K501, K601, K701, K702, K1000; Beyer DT990, Ergo AMT, Goldring DR200, Jecklin Float, Kennerton Odin, Sennheiser HD380, HD471, HD540, HD545, HD565, HD600, HD650, HD800SD, etc.) — plugged on a few amps (AudioValve RKV2 Ivory; Audio-GD Phœnix; Ergo Tube Amplifier for Electrostatic Phones). But a lot more discs…