Mackie MDB-1A
Active Direct Box
Overview
Direct boxes are an essential
tool for any stage or studio. They make it easy to get clean, low-noise audio
to a mixer no matter what instrument you are using. Available in four versatile
models, our ultra-affordable DI's offer the Mackie sound quality that you
expect with Built-Like-A-Tank™ construction for maximum reliability. From
acoustic guitars to laptops, be ready for anything with MDB Series direct
boxes.
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.
A -20 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. Additionally, there are switches for polarity and a
120 Hz high-pass filter. The Merge function allows the Thru jack to be used as
a second, simultaneous input. Due to its active design, the MDB-1A operates on
phantom power. A sturdy steel chassis enables confident use in the studio or on
the road.
VERSATILITY
THE PERFECT MATCH
With four models to choose from, you can get the perfect
match for your instruments. Acoustic guitars and keyboards are right at home
with the MDB-1P and MDB-2P.
QUALITY
PREMIUM ANALOG CIRCUITRY
MDB Series direct boxes offer excellent noise performance
and transparency. Whether you are in the studio or performing on stage, your
instruments will always sound as good as they do at the source.
High output instruments will appreciate the extra
headroom in the MDB-1A.
RUGGED
BUILT-LIKE-A-TANK™
From the inside out, MDB Series direct boxes are built to
last. Thick steel chassis, impact resistant corners, and long-wearing jacks
will keep these in your bag for years to come.
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
-20 dB pad prevents overloading when accepting signal
from a loud source
Ground-lift switch minimizes hum
Active design operates on phantom power
Specifications:
|
Type |
Active |
|
Input Connections |
1 x 1/4" TS unbalanced |
|
Output Connectors |
1 x 1/4" TS unbalanced |
|
Input Impedance |
330 kOhms unbalanced |
|
Output Impedance |
150 Ohms balanced |
|
Impedance Ratio |
2200:1 |
|
Pad |
-20 dB |
|
High-Pass Filter |
120 Hz |
|
Controls |
Pad |
|
Frequency Response |
20 Hz to 20 kHz (±0.5 dB) |
|
Signal to Noise Ratio |
90 dB |
|
Dynamic Range |
130 dB |
|
Total Harmonic Distortion |
0.02% at 1 kHz |
|
Power Requirement |
48 VDC phantom power |
|
Current |
<4 mA DC |
|
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 |