Two channel Class A vacuum tube parametric equalizer -and- two channel Class A discrete solid state parametric equalizer in the same chassis; selectable via the push of a button. Four bands of EQ per channel. Twin Topology

Full Timbral Control, Total Signal Integrity

    * Two paths to perfection with Twin Topology™
    * Fully parametric stereo EQ with unprecedented sonic purity
      & integrity
    * All triode 300 V vacuum tube signal path or...
    * All discrete J-FET solid state signal path
    * Both topologies are entirely transformerless, high voltage,
      pure Class A
    * Minimalist design: only one active stage in the audio path
    * Four EQ bands: 20 Hz to 20 kHz center frequency, 0.4 to
      4.0 Q
    * Extremely low noise: -106 dBu
    * Constructed for demanding professional applications
    * Ultra-Premium components throughout
    * Gold relays, connectors, switches, tube sockets
    * Silver Teflon power wiring
    * Mogami Neglex OFC audio wiring

Options

    * Detented, loggable controls
    * Musically rich vintage vacuum tubes

“Q” Range	Q = 0.4 to 4.0 Adjustable on middle ranges
	Q = 1.0 Fixed on low & high ranges
Maximum Output Level	> + 28 dBu (VT)
Maximum Input Level (EQ Flat)	+ 28 dBu (VT)
Maximum Input Level (EQ Full Boost)	+ 17 dBu (VT)
Frequency Response
+0 / -3 dB	sub 2 Hz to beyond 300 kHz
Frequency Response, Stereo Deviation	< .15 dB
Noise (All EQ Stages In, Controls Flat)	-106 dBu (SS), -94 dBu (VT)
Maximum Boost (21 Step Detented)	+20 dB (+10 dB with range switch in)
Maximum Cut (21 Step Detented)	-20 dB (-10 dB with range switch in)
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
THD + Noise
20 Hz - 30 kHz, All EQ Bands Switched In	< .009%, typ < .003 % (VT or SS)
Common Mode Rejection Ratio (With Balanced Option)
10 Hz - 20 KHz, 100 mV C.M.	> 60 dB, Typ > 80 dB
Slew Rate, +27 dBu Out	> 50 volts per microsecond
Main Hard-wire Bypass Switch For Each Channel?	Yes
Peak/Shelf Selection On High & Low Range?	Yes
Hard-wire Bypass Switching On Individual EQ Bands?	Yes
Input Impedance	25 kilohms
Minimum Output Load Impedance	1 kilohm (VT), 150 ohms (SS)
Recommended Load	> 3 kilohms (VT)
Output Impedance	< 300 ohms (VT), < 5 ohms (SS)
Twin Topology EQ Amplifiers	Switch In: Pure Class-A Discrete J-FETs
	Switch Out: Pure Class-A Triode Tubes
Power Consumption	40 watts maximum
Power Requirements	Selectable: 100-120, 200-240 V ac, 50/60 Hz
Dimensions/Shipping Weight	19” W x 3.5” H x 12.5”, 26 lbs.