This is a sweet little amp. 80 watts @ 8 ohms (internal speaker) or 100 Watts @ 4 ohm (external 8 ohm speaker). It has an effects loop with level knob, tuner out, external speaker jack,headphone out with speaker defeat switch. Great little amp.I am a guitarist and I have 3 bass amps so I don't really need it. I may trade for small tube guitar amp. Location: sandy it's NOT ok to contact this poster with services or other commercial interests utah