Sound Devices MixPre

The MixPre from Sound Devices is a studio-quality two-channel, portable, stereo microphone mixer. Its impressive audio performance and comprehensive features, including pan switches, built-in slate microphone, 1 kHz tone oscillator, and headphone monitoring, make it ideal for the front end of any studio or field production system.

Radio, television, and film production engineers value the compact size and ability to withstand extremes in the field. The MixPre combines rugged mechanical and electrical construction, compact size, and high-quality components. The MixPre gives no-compromise performance for any application.

Features:

• Dynamic range exceeding 110 dB
• 10 Hz to 50 kHz audio bandwidth
• Maximum of 66 dB of gain per input
• Premium Lundahl input transformers
• Discrete 6-transistor balanced output drivers
• Sealed, conductive plastic potentiometers
• Seven-segment, sunlight-readable GaN LED meters
• Phantom power, 48 volts or 15 volts
• High-pass filters @ 80 or 160 Hz, 6 dB per octave
• Inputs hard panned to left, center, or right outputs
• High-power headphone monitoring
• "Unclippable" input peak limiters via two-stage opto-isolator circuit with adjustable limiter threshold (per input)
• Dual mono or linked stereo limiter operation
• Two internal AA batteriesExternal 5 to 17 VDC powering
• Power LED indicates low battery power
• RF filtering on all inputs and outputs. Free from "Pin 1" grounding problems
• High-strength, extruded aluminum chassis with protective metal end panels
• All-metal connectors solidly connected to chassis

Specifications:

• Gain:
     * (s/n 0503_ or greater), Mic Input to Output, per channel, continuously variable
     * LINE: off — 66 dB
     * TAPE: off — 56 dB
• Equivalent Input Noise: -126 dBu (-128 dBV) maximum (150 ohm source, flat weighting, 22 - 22 kHz bandwidth, gain control set at 50% or higher, phantom power off)
• Output Clipping Level (Line): +22 dBu minimum with 100k ohm load, +20 dBu minimum with 600 ohm load
• Dynamic Range: 110 dB minimum
• THD + Noise: 0.05% maximum (from 60 Hz to 22 kHz @ +4 dBu output level, 22 Hz - 22 kHz filter bandwidth, gain control at 50%, phantom off)
• Inputs: Transformer-balanced, 2k ohm input impedance
• Outputs (XLR):
     * s/n < 0507 - impedance-balanced, 120 ohm output impedance,
     * s/n >0507 - active-balanced, 120 ohm output impedance
• Outputs (Tape): Unbalanced, tip-left, ring-right, sleeve-ground, 2.4k ohm output impedance
• Power (Internal): 2 AA alkaline batteries, 6 hours life typical with +4 dBu signal into 600 ohms, no phantom power
• Power (External): 5 - 18 VDC via 4-pin Hirose connector (pin-4 positive, pin-1 negative), voltages above 14 VDC cause no damage to unit, but will open an internal poly fuse. Poly fuse will reset when voltage is removed.
• Power LED: Green indicates power and good battery. Red indicates power and low battery. LED turns red when approximately 1 hour of battery life remain (with phantom power off). Green with external DC power.
• Frequency Response: 20 Hz - 30 kHz, +0.1, -0.5 dB; -1 dB at 5 Hz & 50 kHz (relative to 1 kHz with 150 ohm source, gain controls set at 50%)
• Input Clipping Level: -10 dBu minimum
• Output Clipping Level (Tape): +11 dBu (2.75 V RMS) minimum with 100k ohm load
• Common Mode Rejection Ratio: 100 dB minimum at 80 Hz, 60 dB minimum at 10 kHz
• Channel Separation: Greater than 80 dB at 1 kHz (gain controls set to 50%)
• High-Pass Filters: 80 Hz or 160 Hz (switch selectable), 6 dB per octave
• Phantom Power: 48 V through 6.8k resistors or 15 V through 680 ohm resistors (switch selectable)
• Limiter: Thresholds adjustable per channel from -10 dBu to +18 dBu, 10:1 limiting ratio, 5 mS attack time, 100 mS release time, Amber/Red LED indicates limiting/clipping, Dual mono or stereo linked
• Internal Voltage Rails: ±15 V, regulated
• Polarity: All inputs to all outputs, non-inverting. Pin-2 of XLRs "hot" to unbalanced inputs and outputs.
• Metering: Seven segment GaN (Gallium Nitride) LED meter with three intensities, peak responding
• Operating Temperature Range: 0 to 70 degrees C, 32 to 160 degrees F
• Certifications: meets FCC Part 15 Class B, eligible to bear CE mark
• Dimensions (H x W x D): 1.7" x 3.7" x 5.5" (43 x 94 x 140 mm)
• Weight: 2.0 lbs. (0.8 kg)