RM 420.00
SKU: MDB-1P
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.
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 | 1.5 x 3.4 x 5.8" / 38 x 86 x 147 mm |
Weight | 0.8 lb / 0.4 kg |
Packaging Info
Package Weight | 1.01 lb |
Box Dimensions (LxWxH) | 6.95 x 5.7 x 2.85" |