Blackstar Dept. 10 Boost, Effect Pedal for Electric Guitar, Tube boost with integrated ECC83 tube, James Baxandall EQ with low and high control, Buffer / Line Driver, LED: Effect On, Footswitch: Effect Bypass, Input: 6.3 mm jack, Output: 6.3 mm jack, Power supply connection: Barrel connector 5.5 x 2.1 mm, negative polarity Inside, Powered by a 9 V DC mains adapter (included), Weight: 330 g@+*Note:* Battery operation is not supported.