Mackie MDB-1P Passive Direct Box

Passive Direct Box The Mackie MDB-1P is a passive 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. A -15 dB pad reduces the input level to prevent distortion when using a high-gain source, and the ground-lift switch inhibits hum caused by ground loops. Due to its passive design, the MDB-1P requires no batteries or power supply. A sturdy steel chassis enables confident use in the studio or on the road.Features: Connect an instrument such as a guitar, bass, or keyboard to a microphone preamp Converts a high-impedance, unbalanced 1/4" input to a low-impedance, balanced XLR mic-level output 1/4" thru jack for routing to an amplifier -15 dB pad prevents overloading when accepting signal from a loud source Ground-lift switch minimizes hum Passive design requires no batteries or power supply Specifications: Type: Passive Input Connections: 1 x 1/4" TS unbalanced Output Connectors: 1 x 1/4" TS unbalanced 1 x XLR 3-pin balanced Input Impedance: 140 kOhms unbalanced Output Impedance: 400 Ohms unbalanced Impedance Ratio: 350:1 Pad: -15 dB High-Pass Filter: None Controls: Pad Ground-lift switch Frequency Response: 20 Hz to 20 kHz (±0.2 dB) Signal to Noise Ratio: Not specified by manufacturer Dynamic Range: 128 dB Total Harmonic Distortion: 0.002% from 1 kHz Power Requirement: None Current: N/A Construction Material: Heavy-gauge steel chassis Dimensions (H x W x D): 1.5 x 3.4 x 5.8" / 38 x 86 x 147 mm Weight: 0.8 lb / 0.4 kg