The VGH Rock is a headphone guitar amp that brings you the enjoyment of playing at home, in the rehearsal studio or outdoors just by plugging in to your guitar. When the headphone power is turned off, the product works like a pair of standard headphones, so it’s useful for a variety of situations. Features Based on the tones of amp stacks from the ‘80s and ‘90s Built-in effects add color to the sound. Features highly reliable closed-air dynamic headphone units made by Audio-Technica. Can be worn comfortably for long periods of time; ear pads can be rotated for easy storage. Uses valve reactor technology in the headphone amp circuitry. Includes a thick cable with plenty of length to play even while standing up. The cable can also be pulled out from the right ear pad, making it easy to play your guitar or bass guitar. Easy to operate, with the controls located on the right ear pad. Plug in to the AUX IN jack to jam along with your music player. Predominantly black colors to blend in with your look and match guitars of any color. Specifications TYPE: Closed-air dynamic headphones DRIVER DIAMETER: 40 mm OUTPUT SOUND PRESSURE LEVEL: 97 dB PLAYBACK FREQUENCY RANGE: 20 Hz –20,000 Hz MAXIMUM INPUT: 1,000 mV IMPEDANCE: 49O CABLE LENGTH: 1.6 m CONTROLS: Dials (Gain, Tone, Volume, Effect), Switch (Standby) INPUT TERMINAL: Input plug (6.3mm [¼”] stereo phone plug), AUX IN jack POWER SUPPLY: AAA battery x 2 BATTERY LIFE: Approximately: 7 hours (Manganese)/16 hours (Alkaline) DIMENSIONS (W X D X H): 195x 160x 50mm / 7.68? x 6.30? x 1.97? WEIGHT: 230 g / 8.11 oz. (without batteries) INCLUDED ITEM: AAA battery x 2 for checking Watch: Just Plug in and Play with VOX’s VGH; AC30, Rock and Bass, Guitar Headphones w/ Effects