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Sound Devices MixPre-D Compact Field Mixer


Compact Mixer with Analog, Digital and USB Outputs

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The MixPre-D sets a new standard for compact, high-performance portable audio mixers. Powered by only two-AA batteries or 10-18 VDC, the MixPre-D is designed specifically for audio professionals needing the most flexible connectivity in production applications where capturing great sound is important, but size and weight are a concern. The MixPre-D is also a class compliant USB portable audio hardware interface for Mac OS, Windows or Linux computers.

The Sound Devices MixPre-D sets a new standard for compact, high-performance portable audio mixers. Designed specifi cally for audio professionals needing the most fl exible connectivity, the MixPre-D is ideal for any production application where capturing great sound is important, but size and weight are a concern. At the heart of the MixPre-D are two studio-grade mic/line inputs with limiters, high-pass fi lters and available phantom power. To accommodate the increasing variety of cameras and devices used in production, the MixPre-D has incredible output fl exibility. Outputs include balanced mic/line XLR, dedicated consumer mic-level on a locking TA3 connector (designed specifi cally for DSLR-type inputs) and an aux-level output on 3.5 mm connection.

The “D” in MixPre-D indicates the infusion of extensive digital technology for even more output flexibility. Digital outputs include balanced AES3 on XLR. Additionally USB audio connectivity is provided for Mac OS, Windows or Linux computers. The MixPre-D is a flexible class-compliant USB audio interface. A wide range of additional features in the MixPre-D make it a perfect complement to larger mixers, such as the Sound Devices 302 Compact Production Field Mixer and 552 Portable Production Mixer. These features include: MS stereo matrix, tone oscillator, internal slate microphone, return monitoring of both analog and USB audio, high-gain headphone output and two-AA battery or external 10-17 VDC powering. The MixPre-D continues the heritage of Sound Devices original MixPre, which has been the go-to mixer for audio professionals that need the lightest, simplest and highest performance mixer available.


Transformer-balanced mic/line selectable inputs

48-volt or 12-volt phantom power

“Unclippable” input peak limiters, dualmono or stereo linked operation

Input panning to Left, Center, or Right outputs

Mid-Side Stereo (MS) matrix with width control and front-panel channel fl ip

Return can be used as ch3/ch4 aux-level inputs, selectable pan and level control

High-pass fi lters, 80 Hz or 160 Hz

Slate microphone and tone oscillator

Mic/Line/AES digital selectable outputs, digital SR of 44.1k, 48k, 96k

USB streaming audio output for interconnection with Mac OS, Windows, Linux, and iOS devices

Dedicated mic-level output on lock

Frequency Response

20 Hz - 30 kHz, +0.2, -0.5 dB (relative to 1 kHz level with 150 ohm source, gain controls set at 50%)

Equivalent Input Noise

-126 dBu (-128 dBV) maximum mic in to line out, (150 ohm source, flat weighting, 22 Hz - 22 kHz bandwidth, gain control set at 50% or higher, phantom power off)

Input Clipping

-10 dBu minimum (mic level), +28 dBu minimum (line level)

Output Clipping Level

Line: +22 dBu minimum with 100k ohm load

Mic: -18 dBu minimum with 100k ohm load


Mic to Line, max: 66 dB

Line to Line, max: 26 dB

Line to Mic, max: -14 dB

Mic to Mic, max: 26 dB

Mic (TA3) relative to Line out: -36 dB

Dynamic Range

110 dB minimum, mic input to line output

THD + Noise

0.05% maximum (from 50 Hz to 22 kHz @ +4 dBu output level)

Common Mode Rejection Ratio

100 dB minimum at 80 Hz, 60 dB minimum at 10 kHz


Transformer-balanced, 2k mic input impedance, 16k line input impedance


XLR-Line/Mic: active-balanced, 100 ohm output impedance

XLR-AES3: balanced, 110 ohm, two-channel, on right XLR connector

TA3: unbalanced mic-level output, pin-2 left, pin-3 right, pin-1 ground, 200 ohm output impedance

Tape (3.5 mm) Unbalanced, tip-left, ring-right, sleeve-ground, 2.1k ohm output impedance

A/D Converter for USB

103 dB typical, A-weighted; sample rate selectable 44.1k, 48k, or 96k

Output Noise

-100 dBu (-102 dBV) maximum (22 Hz - 22 kHz bandwidth, flat filter)

High Pass Filters

80 Hz or 160 Hz (switch selectable), 6 dB per octave

Phantom Power

12-volt through 680 ohm resistors or 48-volt through 6.8k resistors (switch selectable)


Threshold adjustable, +8 dBu to +18 dBu, 20:1 limiting ratio, 1 mS attack time, 200 mS release time.


16 segment x 2 GaN (Gallium Nitride) meters, peak + VU responding, wicked bright


Internal: 2 AA alkaline batteries, 4 hours life typical, no phantom power

External: 10-17 VDC via 4-pin Hirose, pin 4 = +, pin 1 = -, completely isolated floating supply

USB Connectivity

USB class-compliant device, analog input to USB output, USB monitoring in headphones


Operating: -20°C to 60°C, 0 to 95% relative humidity; (non-condensing), storage: -40°C to 85°C


0.7 kg, 1.5 lbs with batteries


43 mm x 94 mm x 140 mm (h x w x d), (1.7" x 3.7" x 5.5")