Jokeyman123 - thanks for the OHM resistance data. Privia PX-560 with Sony MDR-V6 Studio Monitor headphone sounds good to me. Some do not care for the headphone sound, first released in 1985, 63-ohm impedance at 1kHz, 40mm drivers, no noise cancelling. Sweat causes ear pad cover flaking after 3 - 4 years so I buy a $10.00 - $20.00 replacement ear pad cover.