EQ-2231 Broadcast class professional equalizer Revolutionary Activates Noise Reduction, with limiter and 40Hz low cut. High Signal-to-Noise till 102dB, suitable to high requirement user. SPECIFICATIONS: Inputs Connectors: 1/4TRS,female XLR(pin 2 hot),and barrler terminal strip Type: Electronically balanced/unbalanced,RF filtered Impedance: Balanced 40KΩ,unbalanced 20KΩ Max Input Level: >+21dBu,balanced or unbalanced CMRR: >40dB,typically >55dB at 1KHz Outputs Connectors: 1/4TRS,male XLR(pin 2 hot),and barrler terminal strip Type: Balanced/unbalanced,RF filtered Impedance: Balanced 120Ω,unbalanced 60Ω Max Output Level: >+21dBu,balanced/unbalanced into 2KΩ or greater >+18dBm,balanced/unbalanced (into 600Ω) System Performance Bandwidth: 20Hz to 20KHz, +0.5/-1dB Frequency Response: <10Hz to>50KHz,+0.5/-3dB Noise Reduction In: (+/-6 and +/-15dB range): Signal-to-Noise: >100dB,unweighted,ref:+4dBu,22KHz measurement bandwidth Dynamic Range: >118dB,unweighted Noise Reduction Out: (+/-6dB range): Signal-to-Noise: >94dB,unweighted,ref:+4dBu,22KHz measurement bandwidth Dynamic Range: >112dB,unweighted Noise Reduction Out: (+/-15dB range): Signal-to-Noise: >90dB,unweighted,ref:+4dBu,22KHz measurement bandwidth Dynamic Range: >108dB,unweighted THD+Noise: <0.04%,0.02%typical at +4dBu,1KHz <0.5%, at 1KHz with 15dB gain reduction Interchannel Crosstalk:<-80dB,20Hz to 20KHz (2215/2231) Noise Reduction: Up to 20dB of dynamic broadband noise reductionPower Supply Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz; 230VAC 50/60Hz Mains Connection: 28W Physical Dimensions: 5.25"H×19"W×7.9"D (134x483x201mm) Weight: 10.6lbs. (4.8Kg)Product Atrributes: Country of Origin: Zhejiang China Brand: Accuracy Pro Audio Model:EQ-2231WHO WE ARE: Welcome to Rich Audio Supply Co. Ltd., part of Xian Far East Import&Export Co., Ltd, an import/export trading subsidiary of the Xian Far East Group. Located in Ningbo City, China.Our diverse product mix includes audio connectors, audio cables, stands, speakers, mixing consoles, peripherals, microphones and other gear sold under our Accuracy Pro Audio brand.We are committed to providing its customers with the quality products that represents the best value for our customers audio investment. We are dedicated to your continued satisfaction. Shall you have any questions or concerns please feel free to contact us @Tel: 86-574-87936703Fax:86-574-87841171Your attention would be highly appreciated!