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Born to Revolve.

There is something uniquely powerful about the sound of a vintage rotary speaker system. The organic chorusing as the treble horn and bass rotor start speeding up.  The grit of the internal tube-driven amplifier, creating additional harmonics that spin around the room.  Plug into Lex, close your eyes, and be transported by this classic sound, recreated with astonishing realism and depth for your pedalboard.

The Complete Rotary Speaker System.

Lex provides you with a complete, accurately reproduced rotary speaker system: the low-frequency bass rotor, the rotating treble horn, the tube-driven amplifier, finely tuned microphone placement, and all the complex sonic interactions between these elements. Powerful, intuitive controls mean you can quickly dial in just the customized sound you desire.

Classic Sound, New Features.

Our second generation Lex gives you the same rich rotary sounds of our original and adds significant new features, incorporating technological advancements, hardware improvements and design enhancements to give you additional flexibility, power, and ease of use on stage and in the studio. 


Full MIDI implementation means you can control just about every switch, knob, and setting remotely by sending MIDI commands from your controller or DAW via Lex’s EXP/MIDI jack or USB-C connection.

Rotor speed can be synchronized via MIDI Clock Sync, and the sync setting can be saved for each preset.

300 MIDI preset locations are available for loading and saving your favorite settings.

Hardware Improvements

A premium analog JFET input circuit ensures superb responsiveness to your playing, and you can select mono or stereo input with the flick of a rear panel switch.

All this, plus a new ARM DSP chip provides more processing power for every sonic nuance, with less energy consumption on your pedalboard.

User Interface

A more powerful and intuitive user interface gives you instant control over mic position and distance, dry level, acceleration speed, volume boost/cut, and easy customization of rotor speed.

Everything you need for the full rotary speaker experience is at your fingertips.


Lex Videos

2 Videos

Audio Examples

Sound Design


Controls & Routing

Hover over the interactive buttons (+) to learn more about Lex’s knobs, switches, and inputs/outputs.

Tap on the interactive buttons (+) to learn more about Lex’s knobs, switches, and inputs/outputs.

Strymon Lex Top Down Shot

Controls the output level of the high frequency rotating horn.

Adds your dry input signal to the effect signal. Dry is off at the minimum setting and blended 50/50 with the effect signal at maximum.

Varies the distance of the stereo mics from the horn rotor and the single mic on the woofer rotor. Turn left for a more pronounced effect. Turn right for more ambience.

Controls the drive of the rotary cabinet’s tube preamp and phase inverter stages. Turn up for a more overdriven cab sound.

Controls the rotor speed for the SLOW and FAST modes.

Used to access Bi-Amp Live Edit function.

Controls the +/-6dB boost or cut when the pedal is engaged. 12 o’clock is unity gain.

Used to access Cab Filter Live Edit function.

Controls how quickly the rotors transition when switching between speeds via the SLOW/FAST switch. The rotors accelerate independently, with the low frequency rotor accelerating more slowly, just like an actual rotating speaker system.

Changes the position of the microphones relative to the cabinet.

front: picks up the sound from the partially covered front of the cabinet.

rear: picks up the sound from the open back of the cabinet.

Toggles the rotor speed between SLOW and FAST.

Flashing red LED indicates the rate.

Hold to activate brake function.

Engages the effect. Red LED indicates the effect is engaged.

Strymon Lex Rear Shot

High impedance, ultra low-noise, discrete Class A JFET preamp input. TRS adapter cable required for stereo input signal.

Low impedance stereo audio signal output. Use Out L for mono output.

Low impedance stereo audio signal output. Use Out L and Out R for stereo output.

Multifunction communication jack for external control of Lex's features and functions.

Use a standard TRS expression pedal for continuous control over the knobs of the pedal.

See complete User Manual for details about configuring for MIDI communication or accessories such as Strymon Conduit, MultiSwitch Plus, and MiniSwitch.

Use the included power supply or an adapter with the following rating:

9VDC, center negative,
300mA minimum.

Computer connection for controlling via MIDI and firmware updates.

Selects input signal type.

MONO: Use with a mono input signal. Output is stereo.

STEREO: Use with a stereo input signal. Output is stereo.