MPX550
Lexicon MPX550 24-Bit Dual Channel Effects Processor
The Lexicon MPX550 is a professional 1U stereo effects processor designed for studios and live sound environments that need the unmistakable depth and clarity of Lexicon’s reverb and multi‑effects. Powered by 24‑bit processing and the LexiChip engine, it delivers smooth, natural ambience, musical delays, rich modulation, and flexible dual‑channel operation in a compact, reliable format.
Key Features
- 24‑bit internal processing with high‑quality A/D and D/A conversion
- Lexicon reverb algorithms for spacious, natural‑sounding ambience
- Dual‑channel architecture with multiple routing modes (dual mono, cascade, split, stereo)
- Extensive preset library plus user‑programmable memory
- Tap Tempo, full MIDI control, and S/PDIF digital I/O
- Balanced XLR and 1/4" analog I/O for seamless integration
Ideal For
- Studio engineers seeking classic Lexicon reverb and versatile multi‑effects
- Live sound applications requiring dependable, great‑sounding processing
- Producers wanting hardware‑based ambience, delay, and modulation
Specs
Analog Audio Input: XLR and 1/4 in. balanced (T/R/S)
Input Level: +20dBu to +8dBu
Input Impedance: 50k, balanced; 25k, unbalanced
Analog Audio Output: XLR and 1/4 in. balanced (T/R/S)
Output Level: +26dBu, balanced; +20dBu, unbalanced
Output Impedance: <600
Digital Audio Input: Coaxial RCA
Format: 24-bit S/PDIF
Sample Rate: 44.1kHz and 48kHz
Digital Audio Output: Coaxial RCA
Format: 24-bit digital S/PDIF (always active)
Sample Rate: 44.1kHz and 48kHz
Conversion: 24-bit A/D; 24-bit D/A
Internal Audio DSP: 24-bit
Frequency Response: 20Hz - 20kHz +/-1dB
Crosstalk: -96dB, 1kHz
THD + Noise: <0.05%, 20Hz - 20kHz
Dynamic Range: D/A: >101dB typical, 20Hz - 20kHz, unweighted
A/D: >105dB typical, 20Hz - 20kHz, unweighted
A/A: >101dB typical, 20Hz - 20kHz, unweighted
MIDI Interface: 5-pin DIN connectors for MIDI IN and MIDI OUT/THRU
Footswitch: 1/4 in. T/R/S connector for bypass and tap
Power Requirements: 90 - 250 volts AC, 50 - 60Hz, 12.5 watts (3-pin IEC connector)
Dimensions: 19 in. W x 1.75 in. H (1U) x 4 in. D (483 x 45 x 102 mm), rack mount standard
Weight: 3 lbs. (1.4 kg)
Operating Temperature: 32 to 104 degrees F (0 to 40 degrees C)
Maximum Humidity: 95% without condensation
