Features 1、Compact size passive metal direct box, for converting a high-impedance, line level and unbalanced output signal to a low-impedance, microphone level and balanced input signal. 2、With 1/4/" TRS input /u0026 output jack, and ATT switch for adjusting input attenuation(-0dB, -20dB, -40dB); One balanced male XLR output jack, AES standard with pin-1 ground, pin-2 hot and pin-3 cold. 3、With one ground lift switch, you can fully separate input and output grounding, which can lower hum noise or ground loops. Specification Features: Compact size passive metal direct box, for converting a high-impedance, line level and unbalanced output signal to a low-impedance, microphone level and balanced input signal. With 1/4" TRS input & output jack, and ATT switch for adjusting input attenuation(-0dB, -20dB, -40dB); One balanced male XLR output jack, AES standard with pin-1 ground, pin-2 hot and pin-3 cold. With one ground lift switch, you can fully separate input and output grounding, which can lower hum noise or ground loops. Minimizing the unwanted noise, distortion, ground loops, and maintaining signal integrity, so that you can enjoy a rich and full sound. Frequently be used to connect an electric guitar or electric bass to a mixing console's microphone input jack. Specifications: Material: Metal Jack: 2 * 1/4" TRS; 1 * XLR Item Size: 12 * 7.5 * 4cm / 4.7 * 3 * 1.6in Item Weight: 370g / 13.1oz Package Size: 23.5 * 16 * 8cm / 9.3 * 6.3 * 3.1in Package Weight: 545g / 1.2lbs Package List: 1 * Audio Converter 1 * Users' Manual(English) Package List 1 * Audio Converter 1 * Users' Manual(English)