Hi Dan
Sure you don't remember me I drove Emil to your home after he shut down Warner Imaging a few years back, and we worked together for a Defense Contractor. I still own my 3 Warner Amps the 2 ER300M's and the Stereo VTE200. You owned the smaller black monoblocks at the time. Mine have worked great for me, but after resting for long periods of time I put them on a variac by habit. One local shop in Baltimore "Just Audio" did do a minor adjustment after all these years and commented it was the sweetest solid state amplifier he has ever heard. Noone had the schematic so I put both amps in the shop together so he could piggy back off the other in case there was a problem, but none after all this time. There are a few out there just 20 total ER300's were produced. After all this time the caps are the culprits for sure if not used regularly. Just my thoughts!
Kevin