JHS Little Black Amp BoxThe JHS Little Black Amp Box gives players newfound control over loud tube amps. The Little Black Amp Box provides an easy way to achieve the tones of a cranked tube amp while remaining courteous with volume. If your amp has a send return effects loop, simply connect the input to your SEND and the output to your RETURN. You can use the Little Black Amp Box to saturate your preamp section and get some cranked tube tone at bedroom levels! Manufacturer's