You should be able to get just about any heavy duty relay with the proper coil voltage to work in that amp. If memory serves me right it used a 3pdt open frame style relay with a 12 vdc coil, I could be off a bit though. I purchased one of these amps right after Dentron started selling them. I think I paid the pricey sum of $439 for it new. If you not used to working in high voltage gear by all means get someone experienced to help you.
