Mr Fitted one to my Blackstar HT5-5 watt amp--just unreal sound now. due to it's very high sensitivity-104 db--it make the amp about 15 watt plus out put--so out plays small fender amps. played a 400 person gig--I was told to turn it down--A 5 Watt amp!!! just fit one-oh-but it is a heavy speaker--but well worth the extra load. Better balanced sound as well.