Legendary as Lexicon themselves admit - A Daddy of them all.
Top top piece of kit totally wasted on me. In very very good condition and all tickyboo operationally. Includes UK postage.
(There's a minty one on ebay at £175 + 15 postage at present. )
Treat yourself.
https://lexiconpro.com/en/products/mpx1
The MPX 1 is the processor that fulfills the promise implied by the term, "multi-effects." Multiple Processor FX technology combined with an interactive front panel, creates a new set of standards for others to follow... no less than you'd expect from Lexicon.
What To Expect
No compromise stereo reverb in combination with as many as 4 additional stereo effects
A "goof-proof" system for quickly fine-tuning any program, without having to enter an in-depth editing mode
Visual feedback to tell you exactly where you are and what features are available; on-board Help guides you all the way
56 Pitch, Chorus, EQ, Modulation, Delay and world-class Reverb effects
Complete flexibility of routing and effect order in every program
200 preset programs designed for a wide variety of audio sources and applications — with database sorting to let you find exactly what you want
Layered features; options are there when you need them, and out of the way when you don't
Dynamic control of all effects parameters with pushbutton access to the patch system
Extensive MIDI implementation
Comprehensive audio connectivity
Details
Analog Audio Input XLR and 1/4" balanced (T/R/S)
Input Level -2dBu to +20dBu, balanced;<br>-14dBu to +8dBu, unbalanced
Input Impedance 100k½, balanced;50k½, unbalanced
Analog Audio Output XLR and 1/4"balanced (T/R/S)
Output Level +18dBu
Output Impedance 600½unbalanced
Digital Audio Input Coaxial RCA
Format 24-bit S/PDIF
Sample Rate 44.1kHz
Digital Audio Output Coaxial RCA
Format 24-bit S/PDIF
Sample Rate 44.1kHz
Conversion 24-bit A/D;24-bit D/A
Internal Audio DSP 20-bit;32-bit
Frequency Response 20Hz - 20kHz ±1dB
Crosstalk -60dB
THD 0.01%, 20Hz - 20kHz
Dynamic Range D/A:>95dB typical, 20Hz - 20kHz, unweighted<br>A/D:>90dB typical, 20Hz - 20kHz, unweighted<br>A/A:>95dB typical, 20Hz - 20kHz, unweighted
MIDI Interface 7-pin DIN connector for MIDI IN and powered bidirectional remote;<br>5-pin DIN connectors for MIDI THRU and OUT
Footswitch 1/4"T/R/S connector for bypass and tap
Footpedal 1/4"T/R/S connector (10k½- 100k½impedance)
Power Requirements 100 - 240 volts AC, 50 - 60Hz, 25 watts<br>(3-pin IEC connector)
Remote Power In 2.5 mm 9 volts AC (not included)
Dimensions 19" W x 1.75" H (1U) x 9" D<br>(483 x 45 x 289 mm), rack mount standard
Weight 6.125 lbs.(2.8 kg)
Operating Temperature 32¡to 104¡F (0¡to 40¡C)
Maximum Humidity 95% without condensation
Manual https://rfs-hire.co.uk/manuals/Lexicon-MPX1.pdf