The Mackie MDB-1A is an active direct box designed to connect a single instrument such as a guitar, bass, or keyboard to a microphone preamp for musicians and audio engineers in recording sessions, houses of worship, and live stage applications. It converts a high-impedance, instrument-level signal via its 1/4" TS unbalanced input to a low-impedance, mic-level output via its balanced XLR 3-pin jack. A 1/4" thru jack allows simultaneous connection to an amplifier or pedalboard. .iframe-container{ position: relative; width: 100%; padding-bottom: 56.25%; height: 0; } .iframe-container iframe{ position: absolute; top:0; left: 0; width: 100%; height: 100%; } Product Specifications: Type: Active Input Connections: 1 x 1/4" TS unbalanced Output Connectors: 1 x 1/4" TS unbalanced 1 x XLR 3-pin balanced Input Impedance: 330 kOhms unbalanced Output Impedance: 150 Ohms balanced Impedance Ratio: 2200:1 Pad: -20 dB High-Pass Filter: 120 Hz Dynamic Range: 130 dB Total Harmonic Distortion: 0.02% at 1 kHz Power Requirement: 48 VDC phantom power Current:
