The VGH Series guitar amp headphones bring you the enjoyment of playing at home, in the rehearsal studio or outdoors just by plugging the headphones straight in to your guitar. When the headphone power is turned off, the product works like a pair of standard headphones, plus they also feature an AUX IN input so you can practice along with your favourite tunes. The BASS model has a wide dynamic range and features a compressor effect perfect to give you warm & smooth bass tones.