The Acousti-Q is the first affordable tube-based preamp/blender for acoustic instruments. The Acousti-Q is the perfect solution for acoustic musicians helping to bring their personal style and sound to new heights! The Acousti-Q gives you the choice to use a single (piezo pick-up) or dual (piezo pick-up and mini-internal microphones) source. With 2 sources, you can blend the signals to achieve the perfect mix.