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TECHNICAL FEATURES

Machined Aluminum Chassis

Preamplifier circuitry housed inside a single ultra-low resonance, structurally rigid chassis, precision-machined from a solid block of aircraft grade 6061-T6 aluminum, completely sealed for maximum electrical/EMI/RFI isolation.

Functional Isolation

Power supply is confined inside an external machined aluminum chassis. Sensitive audio circuits isolated from power supply in main preamplifier chassis. Left and right channel circuits are further isolated into individual milled aluminum pockets in a true dual mono design for ultimate EMI/RMI shielding.

Ceramic Circuit Boards

All audio circuits are implemented on military-grade, multilayer, low dielectric constant, Rogers™ ultra-rigid ceramic circuit board substrate for extremely low energy retention and absorption. Large low impedance ground plane areas for extended internal star-grounding.

Ceramic Capacitors

Newly developed ceramic capacitors replace conventional electrolytics, resulting in power supply noise decoupling improvements by an order of magnitude (10X), especially at higher frequencies.

Dual-zone Preamplification

Separate 2nd gain stage for record outputs offers same circuitry as the primary signal path with independent volume control.

Transformer-Coupled

All inputs and outputs routed through professional grade Lundahl transformers for maximum common noise rejection, EMI immunity, and cross-component compatibility. Transformer coupling to all circuits ensures identical gain for both balanced and unbalanced inputs and outputs.

Flexible Connectivity

6 inputs (4 XLR balanced, 2 RCA unbalanced); 4 main outputs (2 XLR balanced, 2 RCA unbalanced); 2 record outputs (1 XLR balanced, 1 RCA unbalanced); per channel.

Output Offset

High-resolution programmable gain offset on main unbalanced output 2 with 0.5dB resolution adjustable relative to main output 1.

Unity Gain Inputs

Any main input can be configured as a unity gain bypass for compatibility with theater processors.

Channel Balance

High-resolution (1.0dB) panning of stereophonic image (channel balance) for a maximum +/-20dB shift.

VFD

Long life 32x320 pixel custom graphic vacuum fluorescent display (VFD) offers maximum resolution of display data for status indication.

Handheld Remote Transmitter

Highly ergonomic, custom handheld remote transmitter milled from aluminum billet supports complete system control and duplicates front panel operations.

Remote Sensor

Wired remote sensor milled from aluminum billet enables handheld remote transmitter operation while housing preamplifier in closed cabinet enclosures.

Quiet power-up

No turn-on or turn-off transients during intermittent power interruptions.

SPECIFICATIONS

Overall Gain Maximum 7 dB , +/- 20 dB independently programmable on each input

Gain Range 99.5 dB, 199 Equal Increments

Gain Resolution 0.5 dB, +/- 0.03 dB Over Entire Range

Frequency Response 10 Hz – 300 kHz, -3 dB @ 8 ohms

Maximum Input Level 13.5 volts (RMS) @ 0 dB Gain

Maximum Output Level 13.5 volts (RMS)

THD + Noise < .003% @ 2 volt (RMS) Output, 50 Hz – 20 kHz

Common Mode Rejection Ratio > 90 dB, 20 Hz – 20 kHz

Channel Separation > 93 dB, 20 Hz – 20 kHz

Input Impedance 40k ohms Balanced or Unbalanced

Output Impedance 60 ohms Balanced or Unbalanced

Inputs 4 pair Balanced (XLR), 2 pair Unbalanced (RCA)

Outputs 2 pair Balanced (XLR), 2 pair Unbalanced (RCA) for Main

Power Consumption 15 watts

Power Supply Universal Voltage Input Power Factor Corrected Power Supply

Display 320 x 32 dot Vacuum Fluorescent Display (VFD)

Preamplifier Weight 22 lbs. / 10 kg

Power Supply Weight 6 lbs / 2.7 kg

Preamplifier Dimensions (h/w/d) 3.9” x 15.5” x 12.3” (99mm x 394mm x 312mm)

Power Supply Dimensions (h/w/d) 2.9” x 4.7” x 11” (73mm x 119mm x 279mm)