TC-Helicon GO Guitar Pro, Audio Interface for Guitar and Bass, With Midas preamplifier, Suitable for mobile iOS and Android devices, PC and Mac, 24 bit / 48 kHz A/D converter, Frequency response: 20 - 20000 Hz, +0/-1 dB, HiZ instrument input: 6.3 mm jack, Headphone output with adjustable level: 3.5 mm jack, Rotary knob for input level (Gain), Selector switch for direct signal or FX signal, Dimensions: 92 x 45 x 27 mm, Weight: 110 g