Thank you for your e-mail, when this amp goes (which it will soon) out I am replacing it with another brand. I am glad that I did not pay anywhere $1500 for that Amp, after looking inside it should have retailed for $500.00 for a China product. I am old school, where I used to repair electronics (McIntosh) and never had a problem getting part numbers to make any repairs. I found a close match and it worked, caused me hours of research and frustration for a $3.00 part.