Over 130 Optimized Signal Topologies
Audiophile Signal purity in an ultimate quality design Mic preamp with EQ and Optp Compressor

* Twin Mic Preamps — M-2B vacuum tube or HV-3 discrete solid state
* Twin NSEQ-2 Mastering-Grade Parametric Eqs — vacuum tube or discrete solid state
* Three Opto Compressor/Limiter Paths — TCL vacuum tube, discrete solid state, passive
* Twin Opto De-Esser Paths — vacuum tube or discrete solid state
* Vacuum tube or discrete solid state line level paths
* Input coupling with or without MIT-01 audio transformer
* 1/4” vacuum tube DI input — route via tube or solid state gain path
* Effortless, lifelike musical performance at all levels
* Musically rich vacuum tubes available
* Gold audio connectors, tube sockets, relays and switches
* 3/8“ thick radius extruded aluminum face plate
* Durable black mirror-gloss anodized finish
* Mil spec 16 gauge cold-rolled steel chassis
* Ultra-clean toroid power supply: internal sub-chassis
* Hand machined aluminum knobs, illuminated IT&T pushbuttons
* Mogami Neglex OFC audio wiring
* Silver Teflon power wiring
* True audio VU meter for output level or dynamics gain reduction
Microphone Preamplifiers & General:
Twin Topology Mic Preamplifier Selection Switchable, Vacuum Tubes or Solid-State
Twin Topology EQ & Compressor Switchable, Vacuum Tubes or Solid-State
Twin Topology Input Coupling
Switchable, Transformer or Transformerless
Maximum Output Level (Balanced) + 32 dBu
Frequency Response:
+0 / -3 dB (S/S)
sub 5 Hz to beyond 300 kHz
Equivalent Input Noise -131 dBu (SS, Common Source, Direct Out)
THD + Noise
20 Hz - 22 kHz (S/S)
< .05 %, typ < .003 %
Common Mode Rejection Ratio (S/S) > 40 dB, Typ > 70 dB @ 60 Hz.
Input Impedance (Mic) 6,200 ohms
Input Impedance (Line) 2,200 ohms (x2)
Input Impedance (Di - Instrument) > 1 megohm
Output Impedance (Balanced) 24.3 ohms (x2)
Parametric Equalizer:
Maximum EQ Boost/Cut Range (21 Step Detented) +/- 15 dB
EQ Frequencies
Low Range Switch (Centers - Peak/Shelf Selectable):
20, 34, 56, 100, 180, 270
Low Mid Sweep:
20 Hz - 220 Hz or 200 Hz - 2.2 kHz.
10X Range switch selectable.
Hi Mid Sweep:
250 Hz - 2.5 kHz or 2.5 kHz - 25 kHz.
10X Range switch selectable.
High Range Switch (Centers - Peak/Shelf Selectable)
4.8 k, 5.8 k, 8.0 k, 10 k, 16 k, 21 k
“Q” Range Q = 0.4 to 4.0 Adjustable on middle ranges
Q = 1.0 Fixed on low & high ranges
Optoelectronic Compressor/Limiter
Threshold Range Infinite to +20 dBu
Attack Range 2 ms to 100 ms
Release Range 80 ms to 3.0 s
Compression Ratio Range minimum 1.4 : 1, maximum 30 : 1
De-Essing Frequency Switch OFF, 4.9 k, 6.8 k, 8.2 k, 10.7 k , 12.0 k
Power Consumption 50 watts maximum
Power Requirements Selectable: 100-120, 200-240 V ac, 50/60 Hz
Dimensions/Shipping Weight 19” W x 3.5” H x 15.5” D, 25 lbs.