Strymon StarLab Reverb Eurorack Module

Modular Transformation Machine.
Expand the sound of your modular rack with incredibly lush, ethereal reverbs. Enhance signals with gorgeous chorus, flanging, and modulated delays. Create uniquely expressive synth voices with Karplus-Strong string synthesis. Turn simple mono audio signals into vast stereo soundscapes. StarLab is a single module that will completely transform your modular rack.

Singular Modular Reverb.
From perfectly voiced room ambience to vast, immersive, nearly infinite decays, StarLab offers the pinnacle of premium reverb sounds with unparalleled depth and spaciousness. Add musical intervals to the reverb signal with Shimmer, and enhance the harmonic spectrum with Glimmer, while enjoying real-time control over the size/pitch of the reverb process.

Modulation And Delay Effects.
StarLab has vastly expanded what reverb pre-delay can do by allowing you to bus the pre-delay signal to the output while making the pre-delay time a modulation target. This results in the ability to create rich choruses, sweeping flanger effects, and beautiful modulated delays, while also processing signal through the reverb.

Karplus-Strong String Synthesis.
In addition to input signal processing, StarLab is a powerful Karplus-Strong string synthesis voice module that allows freely alternating bowing and plucking as well as dynamic string damping. This results in an astoundingly expressive and lifelike instrument with a unique voice all its own, which can be enhanced and expanded by the full range of StarLab’s reverb capabilities.

Intuitive Creation Station
From patch creation to live performance, StarLab’s powerful features are easily accessible at the turn of a knob or the touch of a button. With no menus to wade through, StarLab’s interface is designed for intuitive hands-on sonic exploration, while every function and control works together to respond musically and smoothly.

• Three selectable reverb types for a wide variety of ambient textures
• Delay/Karplus section with feedback
• Delay assignable to output for mod/verb and delay/verb effects
• Four-octave Karplus-Strong string synthesis mode with damping control for string/verb full voice capability
• LFO section with various waveforms to modulate delay time, reverb size or tone filters
• Filter section to sculpt the high and low EQ of the reverb and Delay/Karplus section
• Harmonics section to enhance the aural spectrum of the reverb
• Adjustable Shimmer for adding pitch shifting of up to +/- 1 octave to the reverb and Glimmer for dynamic enhancement of harmonics
• Adjustable reverb core size to increase or decrease the space for reflections, allowing for pitch control of the regenerating reverb content
• 4-pole 24dB/octave variable resonance low pass filter
• Infinite toggle freezes the input audio prior to the reverb tank
• Access to four presets from the front panel
• Rear USB jack for firmware updates
• Analog dry path for a zero latency dry signal that is never converted to digital
• Ultra low noise, high performance 24-bit 96kHz A/D and D/A converters provide uncompromising audio quality

Module controls

• SIZE/PITCH knob: Changes the process rate and size of the reverb structure while maintaining the integrity of the reverb audio.
• DRY knob: Sets the level of unprocessed input signal sent to the output.
• WET knob: Sets the overall reverberated signal level sent to the output.
• INPUT GAIN knob: Controls the gain of the input signal fed to the reverb structure through a soft clipping input stage.
• DECAY knob: Adjusts the amount of time for the reverb to fade out.
• INFINITE (PITCH QUANTIZE) button: Holds the current audio input to the reverb while allowing new audio to continue being processed by the reverb. Press and hold for 2 seconds to enter Pitch Quantize mode.
• FAVORITE (SAVE) button: Recalls the currently selected Favorite preset.
• TEXTURE switch: Selects Sparse, Dense or Diffuse reverb structures.
• SHIMMER knob: Adds pitch shifting to the reverberated signal. Secondary function to select the interval of the pitch shifting effect.
• REGEN button: Selects regenerative shimmer, which applies pitch shifting within the reverb structure, or input shimmer, which applies pitch shifting at the input before the reverb structure.
• GLIMMER knob:/ HIGH BAND knob: Glimmer dynamically enhances aspects of the input signal's harmonic spectrum.
• HIGH BAND button: Selects between the high band or low band harmonics to be enhanced by the glimmer effect.
• FEEDBACK knob: Applies regeneration to the delay, resulting in more repeats with longer delays or more resonance with shorter delays. In KarplusStrong mode, affects string decay and structure resonance.
• ECHO ON button: Busses the delay output to the web output to mix with the reverb signal.
• DELAY/TUNE knob: In delay mode, applies pre-delay from 0 to 1.5 seconds max. When Tap/Trig clock CV input is detected, acts as a clock mult/div.
• TAP/TRIG button: Allows the delay time to be set by tapping in a tempo.
• LOW DAMP knob: Removes low end content both at the output and in the regenerating core portion of the reverb as the knob is turned clockwise. In Karplus-Strong mode, removes low frequency content of the string.
• HIGH DAMP knob: Removes high frequency content from the regenerating reverb structure as the knob is turned clockwise. In Karplus-Strong mode, dampens the high end harmonics as the string decays.
• LOW PASS button: : Changes High Damp function to a 24dB/octave low pass filter applied at the output of the reverb. To adjust the resonance (Q) of the low pass filter, press and hold the Low Pass button and turn the High Damp knob.
• LFO TARGET switch: Selects the parameter that will be modified by the LFO. Delay modulates the delay time; in Karplus-Strong mode, the tuning of the string is modulated. Pitch modulates the Size/Pitch setting of the reverb. Filter modulates the filter cutoff frequency.
• SPEED knob: Controls the period of the LFO waveform from 15 seconds to 1/15th second (15Hz). When Envelope is the selected shape, controls the decay rate of the envelope. When LFO CLK IN CV is detected, acts as a clock divider/multiplier.
• SHAPE knob: Selects from six different waveshapes for the LFO, including triangle, square, ramp, saw, random and envelope, which responds to input dynamics with the input sensitivity set by the Depth knob.
• DEPTH knob: With the exception of the Envelope shape, adjusts the amount of modulation.

Patch points

• LEFT IN / RIGHT IN audio inputs: Left and right audio inputs. Use LEFT IN for mono input.
• LEFT OUT / RIGHT OUT audio outputs: Left and right audio outputs. Use LEFT OUT for mono output.
• INFINITE CV input: Engages the infinite effect to hold the input signal going into the reverb.
• IN GATE CV input: Gates the input to the reverb when CV is high. In Karplus-Strong mode, continuously excites or 'bows' the string in latching or momentary operation.
• FAVORITE CV input: Toggles between the physical knob/switch settings of the module and the selected Favorite preset setting on rising edge.
• SHIMMER CV input: Sets shimmer gain. Knob position acts as an offset.
• INTERVAL CV input: Sets pitch interval for shimmer, quantized to 1/2 steps over ±1 octave range.
• HIGH DAMP CV input: Affects the wet signal high end filtering. Positive voltage opens filter. Knob position acts as an offset.
• GLIMMER CV input: Sets glimmer gain. Knob position acts as offset.
• LFO CLK IN gate input: Sets the LFO speed to sync with phase-alignment to the clock input. SPEED knob acts as clock div/mult.
• SPEED CV input: Sets LFO speed. Knob position acts as offset.
• DEPTH CV input: Sets LFO depth. Knob position acts as offset.
• EXT LFO IN CV input: External LFO input. DEPTH knob acts as attenuverter.
• TAP/TRIG gate input: Sets the delay time with clock CV input. DELAY/TUNE knob acts as clock mult/div. Clock min 25ms, clock max 3s. In Karplus-Strong mode, triggers or 'plucks' the string on rising edge transition.
• ECHO ON CV input: Busses delay output to the WET output to mix with the reverb signal.
• FEEDBACK CV input: Affects delay feedback or Karplus-Strong string decay/resonance. Knob position acts as offset.
• CLEAR gate input: Clears audio data from reverb buffer when rising edge detected.
• DECAY CV input: Affects reverb decay length. Knob position acts as offset.
• WET CV input: Affects wet output signal level. Knob position acts as offset.
• SIZE/PITCH CV input: 1V/octave 0V = no size/pitch change. -2V = 2 octaves down. +2V = 2 octaves up. SIZE/PITCH knob acts as offset. In Karplus-Strong mode, tunes string to a range of 4 octaves over 4V at 1V/octave. DELAY/TUNE knob acts as fine tune control over 1 octave range.

Physical specifications

• Size: 28hp
• Module depth: 41mm
• Power usage: 210mA @ +12V, 210mA @ -12V