The DRS-Q4 Stereo Class A Mic Preamp/DI/EQ combines mic, line, and DI inputs with a 4-band equalizer with 11 frequency selection options, providing two channels in a 1U enclosure. It delivers the distinctive sound of the Class A design circuitry that Phoenix Audio has been committed to since its early days. Taking full advantage of this Class A design, the transformer-balanced output stage is combined with a state-of-the-art transformerless, Class A, discrete microphone input stage, sometimes described as tube-like in sound, and a high-impedance DI input circuit. ■Specifications ・1U unit: 110V voltage・Class A (DSOP-2) Output specs. Frequency response: 20Hz to 20kHz +- 0.5dB,・Maximum Output Level: +26dBu @ 1kHz・Noise: -90dB @ 20Hz to 20kHz.・Output connections: XLR and TSR 1/4″ Jack on rear・Phoenix Audio's unique Class A, transformer-less, True balanced Mic input stage.・Microphone/Line input: XLR on Rear Panel・DI inputs: 1/4 TSR Jack on Front Panel・Individual Earth Lift: Push-button Switches・Gain Range (Mic input): -30 to -70 in 5dB steps With 10dB more available on the fader.・Gain reduction: -30dB push-button Mic/Line switch (Mic input)・High Input Impedance DI: Mono 1/4″ Jack on front panel (no FETs)・Gain Meter: LED Metering. (Green = 0dB, Yellow = +8dB, corresponding to4 and 6 on a PPM Meter).・Phantom Power: Switchable phantom on Push-button Switch・High Pass Filter: Roll-off starts at 120Hz @ 12dB per Octave.・Phase Reverse: on Push-button Switch・Frequency Response Mic Input Stage: -0.4dB @ 40Hz, -0.3dB @ 25kHz・Frequency Response: DI Input Stage: -0.3dB @ 40Hz, - 0.5dB @ 25kHz・Typical Headroom: +24dB on Mic-Pre stage・Gyratory-based EQ Frequency Centers: (4 Bands) High - 15K, 10K, Hi Mid - 6K, 3K, 1K6, Low Mid - 800Hz, 400Hz, 200Hz, Low - 130Hz, 80Hz, 40Hz・EQ Cut/Boost Levels: 16dB Cut/Boost Per Band・DI Stage gain: Maximum of 20dB・All units are wired with PTFE silver military grade cable