Two Channel Microphone Preamplifier Authentic Transparency for Unrestricted Creativity Unsurpassed ambience retrieval Transformerless design with matched hi-speed discrete transistor octet has +23 dBu input headroom: no attenuator “pads” needed Uncolored timbral accuracy at all dynamic levels Entirely balanced audio path with precision components maintains signal integrity: THD under 5 ppm (.0005%) Effortless, vividly realistic musical performance Laser-trimmed FET-based output stage has +32 dBu headroom: drives 1000 foot (300 m) cable runs with ease Standard 36-step gain controls (1.5 dB per step) are stereo matched to .08 dB Ultra-clean universal power supply (100-240VAC) Gold switches Mogami Neglex OFC audio wiring Silver Teflon power wiring Welded 16 gauge steel rack chassisl Specifications Minimum Gain: 8.5 dB Maximum Gain (1.5 dB per step, 36 steps): 65 dB (up to 75 dB on request) Frequency Response (+0 / -3 dB): sub 3 Hz to beyond 300 kHz Noise (60 dB Gain, 10 Hz - 30 kHz, Inputs common): -133 dB EIN Total Harmonic Distortion + Noise (35 dB Gain, 10 Hz - 20 kHz bandwidth, +27 dBu Out)< :001%, Typ. < .0005% (< 5 ppm) Intermodulation Distortion (50 Hz & 7 kHz) 35 dB Gain, +27 dBu Out :< .0009% Phase Response (35 dB Gain, 50 Hz - 20 kHz bandwidth, +27 dBu Out): < 2 degrees deviation Common Mode Rejection Ratio (35 dB Gain, 10 Hz - 20 kHz bandwidth, 100 mV C.M.): > 65 dB, Typ > 85 dB Slew Rate (35 dB Gain, +27 dBu Out): > 25 Volts per microsecond Maximum Input Level (20 Hz - 40 kHz): +23 dBu (no attenuator pads required) Maximum Output Level (20 Hz - 40 kHz): +32 dBu Phantom Input Impedance (1 kHz): 6,750 ohms Output Impedance: 24.3 Ohms (x2) DPA (B&K) Mic Powering: +130 V dc max, (non-phantom) Phantom Powering: +48 V dc, +/- 4 V dc Power Consumption: 12 watts maximum Power Requirements: 100V to 240V, 50/60 Hz Dimensions/Shipping Weight: 19” W x 1.75” H x 12” D, 15 lbs..
