Jackson Audio Blossom, Effect Pedal for Electric Guitar and Electric Bass, Compressor, Simple and easy to use optical compressor, Features the same optical limit compression circuitry as the Jackson Audio BLOOM, For ""mastered"" responsiveness that optical compression gives a guitarist's tone, Controls: Volume, Comp, EQ, Mix, LED: bypass, Foot switch: bypass, Input and output: 6.3 mm jack, Power supply connection: Barrel connector 5.5 x 2.1 mm, negative polarity inside, Current consumption: 20 mA, Power supply with a 9 V DC power adapter (not included - suitable power supply: Art.#409939#), True bypass, Dimensions (W x D x H): 46 x 102 x 67 mm, Weight: 370 g, Handmade in the USA@+*Note:* Battery operation is not supported