In good working condition.

From Rane:

The MPE 14, two-channel, 14-band, 2/3-octave, and the MPE 28, one-channel, 28-band, 1/3-octave MIDI programmable equalizers begin a generation of automated signal processing from Rane Corporation. Sound Contracting: Presets can be stored for varying room configurations, and recalled via front panel, or external contact closures with the Rane RPS 4 Remote Program Selector (converting switch closures to MIDI program change commands). Access security can be maintained in two levels of front panel lockout. Live Performance: The MPE series interface to any MIDI controller or sequencer, allowing not only program changes, but also curve modification in real time through the use of MIDI System Exclusive (SYSEX) messages. MIDI Studios: Not only can the MPEs overcome deficiencies in synthesizer and drum machine voices, they also add a new musical dimension: Expression. The MPEs respond to expression controllers such as MIDI continuous controllers or channel pressure aftertouch. This feature allows dynamic control and continuous modification of the EQ curve. Bend your bass or tweak your treble; it’s now at your fingertips, in real time. The MPEs are digitally controlled analog equalizers. Start with Rane’s proven equalizer performance. Put it under the powerful control of a 16-bit, 16MHz microcontroller. Program the microcontroller to provide full MIDI implementation, including SYSEX. Add it all together and you get an unbeatable programmable equalizer. The MPEs utilize Rane’s exclusive Interpolating Constant-Q filter technology. The same design used in the commercial grade model GE 30 for smooth, consistently accurate performance, and minimum interaction. The MPEs are fitted with fully balanced Inputs and Outputs using both 3-pin and ¼" TRS connectors. The MPEs allow the user to store 128 equalization curves recalled by either the front panel controls, MIDI commands, another MPE, a Rane RPS 4, or from a computer. DOS software is available from the factory (at no charge) that allows graphic editing of the MPE. Other software companies produce MPE Editor/Librarians, such as Opcode Systems (Galaxy) and Mark of the Unicorn (Unisyn and X-oR). The MPEs also feature decimal and octal program display, program mapping, curve weighting, ramping, copying, and a wealth of usable factory EQ presets.

Features

• 128 MEMORIES WITH DIRECT RECALL
• REALTIME DYNAMIC CONTROL VIA MIDI
• CURVE COMPARE, WEIGHTING & COPYING
• SNAPLESS EQ CURVE RAMPING
• MIDI SYSEX CURVE EDITING
• SEPARATE EQ AND SYSTEM DISPLAYS
• INTERPOLATING CONSTANT-Q FILTERS
• +12/-15dB RANGE IN 1dB STEPS
• INDIVIDUAL BYPASS SWITCHES
• BALANCED 3-PIN & ¼" IN/OUT
• NON-VOLATILE MEMORY
• TWO-LEVEL ACCESS SECURITY SYSTEM
• UL/CSA REMOTE POWER SUPPLY
• DOS EDITOR PROGRAM AVAILABLE