Mackie MDB-1P, Passive Direct Box

Descriptions Mackie MDB-1P, Passive Direct Box The Mackie MDP-1P features 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 applications. The Mackie MDP-1P can 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 can allows simultaneous connection to an amplifier or pedalboard. In addition, the Mackie MDP-1P has an A -15 dB pad that 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. Mackie MDP-1P Main 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