Like the API 3124+, the 3124V is a high quality, compact, 4-channel mic preamp. It is equipped with the RE-115 K mic input transformer and the proprietary output transformer found in all API mic pres and throughout the API product line. Additionally, the 3124V offers Variable Output Level Control and switchable 3:1 output transformer selection. The unit has an internal 48-volt phantom power supply, which is switchable for each channel, as well as -20dB pad switches that affect both the mic and Hi-Z instrument inputs, both located on the front panel.
The 3124V also features up to 65dB of gain. Additionally, the Hi-Z front panel inputs feed directly to the op amps, which allow a low level input such as a guitar or bass to be amplified without a matching transformer or direct box. These Hi-Z inputs can take levels as high as +20dBu, making them perfect for keyboards and other high level devices. The mic preamp outputs are on rear panel male XLR connectors.
| Specifications | |
| Input Impedance: | 1500 Ohms Mic, 470 K Ohms Un-Balanced, HI-Z in |
| Output Impedance: | Less than 75 Ohms Channel Outputs |
| Nominal Levels: | XLR Channel Output +4 dBu |
| Stereo Output Level: | Unbalanced: nominal -2, Balanced: +4 |
| Frequency Response: | +0, -5, 10 Hz to 20 kHz (-.5 at 10 Hz) |
| Noise EIN: | -129 Mic, -125 Un-Bal. Actual |
| Measured Noise: | Better than -91 dBm / below Nominal +4. |
| Distortion: | All Outputs at +4 out, .03%, at +22, .09% Max |
| Gain Range: | 150 Ohms Input 10 dB Min., 65 dB Max (inc. PAD). Un-Bal. Input 14 dB Min., 50 dB Max |
| VU Meter: | Calibrated for XLR Outputs, OVU=+4 dBu, (-12, -6, -3, 0, +3, +6, +18) |
| Controls: | GAIN, PAD (20 dB), 48Volts, POL (polarity), MIC (mic/un-bal), VU, AC |
| Power Consumption, Quiescent: | 19.2 Watts |
| Size: | 19" X 1.75" (1U) X 11" Deep |
| Size (Boxed for Shipping): | 23.25" X 6.5" X 16.5" |
| Actual Weight: | 10.38 lbs. |
| Shipping Weight: | 14.06 lbs. |
