Used JHS Little Black Amp box

Unlike the EQ pedals we discussed, the JHS Little Black Amp Box is a passive utility tool rather than an effect. It is a frequent "problem solver" for players with high-wattage tube amps that are simply too loud for home or studio use.

What is it?

It is essentially a master volume control in a box. It consists of an input, an output, and a single potentiometer (volume knob). Because it is passive, it requires no power supply—you just plug in and go