API 3124MV — Microphone
API 3124MV — Microphone
API 3124MV is a 1U four-channel microphone preamp with an integrated stereo mixer.
Specifications
Format
| Product type | Four-channel microphone preamp with integrated stereo mixer |
|---|---|
| Rack format | 1U 19-inch rackmount |
| Channels | 4 microphone preamp channels |
Inputs and Outputs
| Inputs | Four XLR mic inputs and four 1/4-inch unbalanced/Hi-Z inputs |
|---|---|
| Inserts | Rear 1/4-inch insert jack per channel, tip-send/ring-return |
| Mixer | Stereo panner with level control, post-fader aux send and stereo aux return |
| Outputs | Channel outputs plus transformer-balanced stereo mixer output |
Controls
| Gain | Up to 65 dB gain; 10-65 dB with 150 ohm source including pad |
|---|---|
| Pad | 20 dB pad |
| Phantom power | Switchable 48 V phantom power per channel |
| Output transformer tap | Switchable 3:1 output transformer tap selection |
Audio Specifications
| Input impedance | 1500 ohm mic; 470 kOhm unbalanced/Hi-Z |
|---|---|
| Output impedance | Less than 75 ohm channel outputs |
| Frequency response | +0/-0.5 dB, 10 Hz-20 kHz |
| Noise ein | -129 dB mic, -125 dB unbalanced actual |
| Distortion | 0.03% at +4 output; 0.09% max at +22 output |
Power
| Power consumption | 19.2 W quiescent |
|---|
Fit and constraints
Intended use
Constraints
To use it
Questions
Which connections, drivers, operating systems, and sample rates are supported by this exact revision?
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What cables, mounts, power supplies, or licenses are included?
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Is the current retailer listing new stock, demo stock, open box, or special order?
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Description
API 3124MV is a 1U four-channel microphone preamp with an integrated stereo mixer. API describes it as four channels of its classic microphone preamp design using API 2520 op amps, AP2516 input transformers and proprietary output transformers, with a mixer section that adds stereo pan, level control, post-fader aux send, stereo aux return and transformer-balanced stereo output. Each channel provides XLR mic input, 1/4-inch unbalanced/Hi-Z input, front-panel 20 dB pad, polarity, mic/line and 48 V phantom switches, plus rear insert jacks. Published specs include up to 65 dB gain, 1500 ohm mic input impedance, 470 kOhm unbalanced/Hi-Z impedance, less than 75 ohm channel output impedance, 10 Hz-20 kHz response, 19.2 W quiescent power consumption, 19 x 1.75 x 10.5 in dimensions and 11.54 lb actual weight.