Circuit Topology : High-voltage 100% discrete, balanced and symmetrical Class A Unity gainOutput Gain Range : Unity GainMaximum Input Level : +30dB balanced XLR pin 2 hotMaximum Output Level : +32dB balanced 600 ohms, DC coupled, high-current discrete Class AInput / Output Type : XLR type, pin 2 hot balancedNoise 20kHz Unweighted : -94dB (EQ in)Distortion THD, IMD : 0.5% (typical 0.05% at +6dB 1kHz)Frequency Response -3dB : 1Hz to 450kHz (input band limited)Equalizer Type : Passive high and low bands plus two fully parametric mid bandsBypass : Hard-wire relay bypass for equalizer L-R in-out plus silent opto switch for seamless stereo bypass.Low Band F1 : Passive, switched amplitude to -20dB to +20dB in 0.5dB, 1dB or 2dB stepsF1 Frequency Range : shelf or peak-dip curve, switched 18, 25, 30, 50, 72, 100, 150, 200, 300, 400HzMid Band F2 : Active, switched amplitude to -10dB to +10dB in 0.5dB or 1dB stepsF2 Frequency Range : Switched 12, 15, 18, 21, 25, 30, 36, 42, 50, 60, 70, 84, 100, 120, 140, 170, 200, 240, 280, 340, 400Hz, (x10) 120, 150, 180, 210, 250, 300,360, 420, 500, 600, 700, 840, 1k, 1k2, 1k4, 1k7, 2k, 2k4, 2k8, 3k4, 4kHz Q (width) switched 5 positions 6, 9, 12, 15, 18dB per octaveMid Band F3 : Active, switched amplitude to -10dB to +10dB in 0.5dB or 1dB stepsF3 Frequency Range : Switched 140, 160, 180, 210, 250, 300, 350, 420, 500, 600, 700, 840, 1k, 1k2, 1k4, 1k5, 1k6, 1k8, 2k, 2k2, 2k4, (x10) 1k4, 1k6, 1k8, 2k1, 2k5, 3k, 3k5, 4k2, 5k, 6k, 7k, 8k4, 10k, 12k, 14k, 15k, 16k, 18k, 20k, 22k, 24kHz Q (width) switched 5 positions 6, 9, 12, 15, 18dB per octaveHigh Band F4 : Passive, switched amplitude to -20dB to +20dB in 0.5dB, 1dB or 2dB steps,F4 Frequency Range : shelf or peak-dip curve, switched 3k, 4k, 6k, 8k, 10k, 12k, 15k, 17k, 20k, 25kHzAC-DC Power : External AC supply, 150w toroidal transformer, 4 pin cable 90v ac isolated(B2T Power Supply Included) : 100-240v selectable 50/60Hz, 150w maxDimensions : 19 x 7 x 15 in (482 x 178 x 380mm)Shipping weight : 40lbs (13.6 kg)