Maag Audio PREQ-4 500 Series preamp with Air Band
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The PREQ4® (500 Series) is a one channel microphone preamplifier with AIR BAND® (shelf boost from 2.5 to 40kHz via VARI AIR™), compatible with the API 500-6B lunchbox and industry-standard 500 series racks. Following its PreQ3 predecessor, the PREQ4 provides unparalleled transparency and top end presence while maintaining the true natural sound behind the microphone.
Designed for the lunchbox portable audio equipment format, the PREQ4 offers the legendary AIR BAND, 65dB adjustable gain, phase reverse capability, 70Hz high pass filter, +48V phantom power, and -20dB PAD. The Maag Audio PREQ4 is an official member of the VPR Alliance.
| Specifications | Value |
| Max Gain | 65 dB |
| Frequency Response | -3 dB points, 10Hz & 75kHz |
| Nominal Input Impedance XLR) | Mic, 150 Ohms, balanced |
| Nominal Output Impedance (XLR) | 50 Ohms, actively balanced |
| Equivalent Input Noise | -128 dBu (-96 dBu Actual Metered Noise) |
| Headroom | +27 dBu |
| Maximum Phase Shift | 25° |
| THD + Noise | < 0.007% |