Blackstar Unity Bass 120The Blackstar Unity 120 1 x 12 Bass Combo Amplifier provides a powerful performance partner that can do it all. From the practise room to the main stage, the Unity 120 has enough going on under the hood to see you through anything. VERSATILE INPUT CONTROLS The Unity 120 is equipped with a top panel control layout, which offers ready access to everything you could need to produce enviable tones. Alongside the instrument input, there is a pad switch