White Instruments 4400 Series 2/3 Octave Eq MATCHED PAIR

White Instruments 4400 Series 80s MATCHED PAIR White Instruments Model 4400 28 Band Vintage Equalizer See below for detailed description. These have been meticulously maintained and come with a handy cover if used in a mobile setting (protect knobs and knob settings - or set and forget) The Model 4400 is perhaps the highest performance and most reliable one-third octave graphic equalizers on the market today. It has been in continuous production by White Instruments for more than 15 years. The 4400 features 28 one-third octave L-C active filters on I.S.O. standard frequency centers from 31.5Hz through 16kHz. Each filter has a range of ±10dB. Features: L-C Active Design Multiple Outputs Adjustable high and low-pass filters Input and outputs 2 & 3 level attenuatiors EQ in/out switch Sockets for optional input and output isolation transformers Choice of a matching metal or clear plastic security cover Specifications: Number of Channels: One Frequency Range: 20Hz - 20kHz -2dB, typical with all 1/3 octave filters set at center Dynamic Range: 108dB Recommended Operating Level: 0dBu (0.775 volts rms) Maximum Operating Level: +18dBu into 600 ohms. +15dBu into 600 ohms using optional output transformer(s) Noise: Better than -90dBu (re. 0.775 volts) at unity gain, 20kHz bandwidth. Worst Case Distortion: Less than 0.02% THD at +18dBu into 600 ohms, 20kHz bandwidth Filter Type: L-C active, single-pole pair Filter Control Centers: 28 one-third octave filters on I.S.O. standard frequency centers from 31.5Hz through 16kHz Filter Center Frequency Tolerance: ±5% Filter Controls: Rotary potentiometers Filter Control Range: ±10dB at center frequency EQ In/Out Switch: Front panel mounted. By-passes 1/3 octave filters only. Silent operation High-Pass Filter: -3dB point adjustable from 20Hz -160Hz, 12dB/octave response Low-Pass Filter: -3dB point adjustable from 20kHz -5kHz, 12dB/octave response Level Adjustments: Input and Outputs 2 & 3; 0dB to -20dB. Continuously variable Connectors: Barrier Strips Input/Output Circuits: Input: Active balanced differential. Better than 70dB common mode rejection. Plug-in isolation transformer available Outputs: Single ended. Plug-in isolation transformer(s) available Input Impedance: ~100 kilohms Number of Outputs: 3 Output Impedance: <100 ohms. 300 ohms with optional output transformer(s) Power Requirements: 115 /230 VAC, 50/50Hz, user selectable on rear panel, ~5.5W Dimensions and Weight: 3.5" by 19" (rack mount 2RU) by 8" 8.9cm by 48.3cm by 20.3cm 8 lbs. - 3.6kg Finish: Black painted brushed aluminum. White nomenclature. Matching metal security cover furnished