The versatile guitar amplifier, SL-15DXII, offers rich sound quality and diverse controls. Although it's an older model, it functions without any sound issues. It produces a good sound. The boost also works without any problems. - Model: SL-15DXII - Input Terminals: INPUT, EFFECTS LOOP, PHONES - Controls: VOLUME, BOOST, MASTER, TREBLE, BASS, MID, PRESENCE, GAIN, FREQUENCY - Power: AC Power - Color: Black Fender Guitar Amplifier Amplifier Thank you for viewing.