Buy Used M-EQ 230 by Alesis

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M-EQ 230 Input and Output Processors

...ch channel featuRES 30 bands of 1/3rd octave equalization with ANSI and ISO standard center frequencies. Each band is adjusted by a center detented fader with ±12dB of gain available, and a master fader controls system gain for that channel. Clip and signal present LEDs, as well as a bypass switch, are also provided on each channel. Inputs and outputs for each channel are via both 1/4" phone plugs and RCA jacks. The unit can also be rack mounted in only 1 rack space.
Features :
• 2 complete 30 band 1/3 octave Equalizers in 1 rack space 
• Power-up delay circuitry protects speakers by eliminating turn-on transients 
• +/- 12dB boost or cut per band 
• Each channel can be bypassed individually 
• Clip and signal present LED's for each channel 
• Inputs and outputs via both 1/4" phone and RCA jacks
Technical Information:
* Frequency Response: +0dB -1.5dB 20Hz to 20kHz
* Nominal Level: 0dBV
* Dynamic Range: 107dB A-weighted
* THD + Noise: less than 0.005 @ 0dB 20Hz - 20kHz
* Gain: 0dB (unity), EQ bypassed
* Max. Voltage Gain: +12dB
Indicator LEDs:
Power On = red, Signal Present = green, In/Out = green, Peak Indicator = red (turns on when instantaneous level is +18dB)
Controls:
25 / 31 / 40 / 50 / 62 / 80 / 100 / 125 / 160 / 200 / 250 / 320 / 400 / 500 / 640 / 800 / 1k / 1.3k / 1.6k/ 2k / 2.5k / 3.15k / 4k / 5k / 6.2k / 8k / 10k / 13k / 16k / 20kHz level controls, In/Out switch, +/-12 dB Input Level control
* Range Of Boost/Cut: +/-12dB
* Input Impedance: 500k ohms (unbalanced)
* Output Impedance: 240 ohms (unbalanced)
* Input/Output Jacks: 1/4" L/R, RCA L/R
* Power Requirements: 120 VAC 60Hz, UL and CSA Approved external transformer
*

Alesis Input and Output Processors

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Input and Output Processors

Input/output processors are used for multichannel sound recording in real time. Capable of studio-grade fidelity, these specialized soundcards are used in professional sound engineering and make use of an audio stream input output protocol. These kinds of I/O audio processor soundcards are fitted with multiple input and output connections, usually USB, FireWire or some kind of optical interface so that a larger amount of data can be carried than with a normal sound card. Input/output processors also emphasize higher fidelity and sampling rates, as they are intended for real-time audio mixing and multi-channel recording. Due to their highly specialized nature, input/output processors are not considered practical for home users, as they lack certain features common in consumer soundcards, such as real-time ambience effects, environmental audio extensions and the ability to accelerate hardware in video games, as these are considered to be undesirable. Input/output processors feature a specially designed protocol that is capable of handling numerous inputs and outputs for audio, as consumer soundcards have a sampling latency that is comparatively large, and therefore unsuitable for professional applications. Consumer soundcards simply take too long to convert and transfer a sound sample to the hard drive of a computer, and they are also limited in the amount of bit depths and effective sampling rates they can process. Input/output processors typically have multiple channels, rather than just the two provided on most consumer soundcards, and there connectors are more accessible.