I have 3 amps. 2 broken, 1 works fine. The two broken are an MTX PRO50X2 (needs new RCA inputs), a Pioneer GM-X332 (also needs new RCAs), and a Coustic AMP380 that works fine, but needs the speaker output adapter. If you don't want to buy the adapter, you could easily solder the wires to your speakers to the amp. Let me know!