Here for sale is a FAULTY Weber Mini Mass 50 W Power Attenuator. The spinning knob is loose and sometimes does not make contact. The Weber Mini Mass 50W Guitar Amp Attenuator is a compact and powerful accessory designed specifically for electric guitars. With a 50W power output, this attenuator allows guitarists to practice at a lower volume while still retaining the dynamic range and tone quality. Made by the reputable brand Weber, this device is ideal for musicians looking to practice silently or warm up before a gig without disturbing others. The mini mass attenuator is a reliable and versatile tool for any guitarist wanting to fine-tune their sound and practice effectively.