The Moog Matriarch represents the pinnacle of Moog's semi-modular analog synthesizer family, offering a comprehensive synthesis platform that bridges traditional keyboard performance with modular flexibility. This sophisticated instrument combines the immediacy of a performance synthesizer with the creative potential of a modular system, requiring no patching for basic operation while offering extensive modular connectivity for advanced sound design.

At its core, the Matriarch is a 4-note paraphonic analog synthesizer built around vintage Moog circuitry designs. The instrument features four analog oscillators based on the classic Moog 921 modules, dual 24dB/oct ladder filters derived from the Moog 904a, and a comprehensive modulation system. The 100% analog signal path ensures the authentic Moog character that defined synthesizer music of the 1970s while incorporating modern conveniences like MIDI integration and digital sequencing.

The instrument's paraphonic architecture allows for rich harmonic textures with up to four notes of polyphony, though it can also function as a massive four-oscillator monosynth when stacked. The built-in 256-step sequencer can store and recall complex patterns with up to four notes per step across 12 memory locations, while the arpeggiator offers unique modes including forward, forward/backward, and random patterns.

One of the Matriarch's standout features is its stereo analog delay system, providing up to 700ms of BBD-based delay with ping-pong capabilities. The delays can operate independently or in synchronized modes, offering everything from subtle echoes to complex polyrhythmic textures and feedback-driven soundscapes.

The modular capabilities are extensive, with 90 patch points accessible via included 3.5mm cables. The semi-modular design means the instrument is fully functional without any patching, but the patch bay opens up limitless possibilities for sound manipulation and external integration. Three patchable VCAs (called Attenuators by Moog) can function as standard amplifiers, ring modulators, or DC voltage sources, dramatically expanding the instrument's modulation potential.

The build quality reflects Moog's flagship status, featuring a full-sized 49-note velocity and aftertouch-sensitive keyboard, solid steel chassis, and professional-grade controls. Available in both the original multi-colored design and an all-black Dark Series edition, the Matriarch makes a visual statement that matches its sonic capabilities.

Technical Specifications

Synthesizer Type

• Semi-Modular Analog Synthesizer
• 100% Analog Sound Engine
• No patch memories (pure analog signal path)

Keyboard & Controllers

• Keys: 49 full-size keys
• Key Features: Velocity-sensing with Aftertouch
• Note: Velocity and Aftertouch available via MIDI and dedicated CV outputs (not hard-wired)
• Controllers: Pitch Bend, Mod Wheel, Variable Glide, Expression pedal input to CV output, Sustain Pedal input

Polyphony & Voice Modes

• Polyphony: Monophonic, 2-Note Paraphonic, and 4-Note Paraphonic
• Voice Modes: Mono, Duo, and 4-note paraphonic playability
• Multi-trigger: On/Off capability

Sound Sources

• Oscillators: 4x Analog Oscillators
• Waveforms: Triangle, Sawtooth, Square, Pulse (per oscillator)
• PWM: Available on Square and Pulse waves
• Octave Range: 16' to 2' per oscillator
• Hard Sync: Available on Oscillators 2, 3, and 4 (sync to previous oscillator)
• Fine Tuning: Available on Oscillators 2, 3, and 4 (range settable in Global Settings)
• CV Inputs per OSC: Pitch, PWM, Linear FM (3 inputs each)
• Additional Sources: White Noise Generator, External Input jack
• Oscillator Basis: Based on vintage Moog 921 oscillator modules

Mixer

• Channels: 6-channel mixer
• Input Types: 5 Eurorack level, 1 instrument level
• Channel Sources: 4 oscillator channels, 1 noise channel, 1 external input channel
• Design Basis: Based on Moog CP3 mixer
• Type: DC coupled discrete mixer
• Characteristics: Asymmetrical clipping behavior, distorts above 12 o'clock (desirable harmonic enhancement), signal level interaction

Filters

• Type: Dual 24dB/oct resonant filters
• Design Basis: Based on Moog 904a filter modules
• Modes:
  • Series (VCF1 high-pass → VCF2 low-pass)
  • Parallel (VCF1 high-pass || VCF2 low-pass)
  • Stereo (both filters as low-pass, independent paths)
• Controls: Single Cutoff knob, Spacing control for frequency offset
• CV Inputs: Independent cutoff frequency control for each filter
• Modulation: Bipolar Envelope Amount, Keyboard tracking (up to 100%)
• Self-Oscillation: Yes, playable at 100% keyboard tracking
• Patch Points: Independent audio inputs/outputs, Envelope Amount CV input

VCAs (Amplifiers)

• Main VCAs: 2x discrete analog VCAs routed in stereo (between filters and delays)
• Attenuators: 3x bipolar Voltage Controlled Attenuators in Utilities section
• VCA Modes:
  • AMP ENV: Amplitude Envelope applied to both VCAs
  • Split: Filter Envelope to VCA1, Amplitude Envelope to VCA2
  • Drone: Gain from CV inputs or internal default voltage
• Design Basis: Based on Moog 902 VCA modules
• Additional Functions: Ring modulation capability, DC voltage generation

Envelopes (Contour Generators)

• Count: 2x ADSR Envelope Generators
• Control Style: Three knobs plus slider design
• Timing: Attack/Decay/Release: 2ms to ~10 seconds
• Features:
  • Trigger inputs (override keyboard gate)
  • ENV END outputs (gate held until next attack)
  • Loopable (patch ENV END to Trigger In for continuous cycling)

Modulation Sources

Main LFO (Analog Modulation Oscillator):

• Waveforms: 8 total - Sine, Saw, Ramp, Square, Stepped Triangle, Smoothed Random, Sample and Hold, Noise
• Frequency Range: 0.07Hz to 1.3kHz
• Special Feature: Stepped triangle timing synced to ARP/SEQ clock
• Modulation Destinations: Filter cutoff, Pulse width, Oscillator pitch
• Pitch Mod Options: All, 1&3, 2&4
• CV Inputs: Rate CV, Sync input
• Output: Selectable and patchable

Additional LFO:

• Outputs: Simultaneous triangle and square waves
• Frequency Range: 0.07Hz to 520Hz (knob), near-stationary with CV
• CV Input: Rate control

Modulation & Utilities

• Sample & Hold: Available with noise output (part of main LFO)
• Mixers/Multiples: 2x four-way mixer/multiples
• Multiples: 2x4 Parallel-wired Non-buffered Patch Points
• Attenuators/VCAs: 3x bipolar Voltage Controlled Attenuators
• Ring Modulators: 3 available (using Attenuators)
• Patch Points: 90 modular patch points total (49 Inputs, 33 Outputs, 2x4 Parallel-wired Mults)
• Static Filters: High-pass filter, Low-pass filter (for noise and delay brightness)

Analog Delay

• Type: Stereo BBD (Bucket Brigade Device) Analog Delay
• Design Basis: Based on Moog 500 Series Analog Delay module
• Delay Time: 35ms to 780ms (Time knob), longer lo-fi delays via CV
• Extended Range: Up to 700ms with MIDI sync
• Modes: Independent or Ping-pong operation
• Controls: Time, Spacing (offset between delays), Feedback, Mix
• Special Features:
  • Clock sync with BPM ratios and triplet divisions
  • High feedback oscillation capability
  • Polyrhythmic delay patterns
• CV Inputs: Individual delay times, feedback amount, wet/dry mix
• Audio I/O: Independent inputs for each delay, multiple outputs

Sequencer

• Steps: 256 steps maximum
• Polyphony: Up to 4 notes per step (paraphonic)
• Patterns: 12 stored patterns
• Features: Notes, rests, ties, up to 8 ratchets per step
• Playback Modes: Forward, Forward/Backward, Random
• Editing: Real-time step replacement while running
• Output: MIDI output of sequences, CV and velocity outputs
• Decoupling: Can sequence external gear independently

Arpeggiator

• Modes: Order (as played), Forward/Backward, Random
• Octave Range: 1, 2, or 3 octaves
• Tempo Range: 20-280 BPM or external clock ratios
• Features: Velocity information retained, CV outputs available

Connectivity - Front Panel

• Patch Points: 90x 3.5mm modular patch points
• Included: 3.5mm patch cables

Connectivity - Rear Panel

• Audio Outputs:
  • 2x 1/4" TS jacks for line level output
  • 2x 3.5mm Eurorack level outputs (duplicate main outputs)
  • 1/4" Headphone output with dedicated level knob
  • 2x 3.5mm Delay outputs
• Audio Input: 1/4" TS jack (External audio input)
• Delay I/O: Audio outputs, CV input (Delay 2 feedback), External clock input
• Performance CV:
  • Pedal Inputs: 1/4" Sustain pedal (TS), 1/4" Expression pedal (+5V TRS)
  • CV Outputs: Pitch, Velocity, Aftertouch, Gate, Mod Wheel, Expression CV (all 3.5mm)
• ARP/SEQ: Clock In/Out, On/Off input, Reset input (all 3.5mm)
• MIDI: 5-pin DIN In/Out/Thru, USB (MIDI + firmware updates)
• Power: 12V DC external supply with threaded security ring
• Security: Kensington security slot
• Tuning: Fine-tuning knob

MIDI Implementation

• Standard Messages: Pitch-bend, Tuning, Velocity, Channel Aftertouch
• Program Changes: Values 1-12 select sequences (no patch memories)
• Clock: MIDI Clock, Start, Stop, Continue (receive), Start/Stop (transmit)
• Control Changes: 36 MIDI CCs recognized
• Resolution: Most important CCs use 14-bit resolution
• Note: Some CCs don't follow MIDI 2.0 specification

Global Settings

• Parameters: 46 total parameters in 5 groups
• Group Structure: Groups 0-3 (10 parameters each), Group 4 (6 parameters)
• Categories: Note priority, portamento, pitch-bend range, MIDI, arpeggiator/sequencer, clock/CV ranges
• Hidden Features: Noise color filter, delay brightness filter, note stealing behavior
• Access: Key combinations in Global Settings mode (no screen/menus)

Physical Specifications

• Dimensions: 32" (81.28cm) Wide x 14 1/4" (36.19cm) Deep x 5 1/2" (13.97cm) High
• Weight: 24lbs / 10.89kg
• Construction: Steel chassis, wobble-free knobs, large friendly controls
• Finish Options: Original multi-colored panel or all-black Dark Series

Power Requirements

• Input: 12V DC (positive tip), 2A
• AC Input: 100 to 240 Volts AC, 50/60Hz
• Supply: Included power adapter with screw-on barrel connector
• Connection: Secured with threaded ring