BOSS Direct Box DI-1 In excellent condition, having been used only a few times indoors! A standard direct box for live houses. 【High-Quality Sound】 The BOSS DI-1 is a direct box that delivers professional sound quality. It achieves a high signal-to-noise ratio, making it ideal for music production and live performances. 【Multi-functional Design】 It can switch between normal and inverted polarity, accommodating various sound sources. The lift function prevents ground loops, maintaining clear sound quality. 【Auto Power Function】 The auto power function simplifies power management, automatically turning on when in use. This saves battery life and allows for extended use. - Brand: BOSS - Model: DI-1 - Type: Direct Box - Block Diagram: DI-1 BLOCK DIAGRAM - Input Terminals: XLR Input - Output Terminals: XLR Output - Switch: Normal/Invert Switch - Lift Switch: Lift Function - Auto Power: Auto Power Function