The OBB unique 10g is a compete sound system including your attached instrument. You can connect an electric guitar, a microphone and even a synthesizer if you keep the volume low of the synthesizer low. It can run off the included adapter or 6 AA batteries, as it sports.
4 control nobs; a gain, a bass, a treble and a volume. It also has a distortion effect control. It is rated at 10 watts. The frequency
response is 20-20kHz. Included is the manual and the adapter.