Crown DC300A Lab. Power Amplifier DC to 100K +/-0.5dB JA! I had to send off the review piece I really liked and hooked up the beast (without fuses) Rock ass solid. Smooth too! Legato headroom on long bottom notes. Fast, no pain. Balls good, not punchy balls (IOC lights come on quick) but legato balls out the ass. IOC (Initial overload clip @ 0.1THD vs IMD) Them old dog hunts solid my Friend. Highly regarded (again after 30 years since first owned one) Wanted to fianlly follow up. I replaced this, (below) with the old dog.