YMUZE Mosky Mini Overdrive Preamp Pedal with True Bypass Switch?D250X?

Function knobs: Gain: Controls the amount of distortion, from just a touch of grit to all-out grind. Level: Dials in some subtle body for "always on" performance or huge amounts of boost for boosting solos above a dense stage mix. With the Gain all the way down, crank up the Level to boost your sound and cut through during your solos. Specifications: Material: zinc aluminum alloy Input: 1/4" monaural Jack Output: 1/4" monaural Jack Item Size: 9.2 * 3.8 * 3.6cm / 3.6 * 1.5 * 1.4in Item Weight: 158g / 5.6oz Power Jack: 9VDC, Negative Tips (Regulated recommended) Please note: 1. Due to the lighting effect, the color of the item shown in the picture may be a little different from the real one. It is just for your reference only. 2. The measurement allowed error is +/- 1cm. Packing List: 1* Effect Pedal