Guitar effects pedal with legendary optical tube compression, true/buffered bypass and Stock/Fast attack switch.
The UAFX LA-2A Studio Compressor effects pedal puts legendary optical tube limiter sound at your feet, voiced to precisely match the original handwired hardware—with all the inspiring tone and classic feel on tap. Whether it's ringing clean tones and single-note guitar lines, or adding focus to bass, synths and keys, the LA-2A enhances instruments like no other compressor. This pedal gives you all the big, three-dimensional sound of the original hardware—including its transformers, tubes and T4 optical cell distortions—right on your pedalboard.
Add the Fat Sound of a Vintage Tube Circuit
Even without compression, LA-2A will elevate your tone with bold tube thickening, easily pushing your already-cooking tube amp into juicy overdrive, full of harmonics and color.
Compress With a Tough, Compact Stompbox
Built for years of trouble-free performance, LA-2A Studio Compressor features switchable true/buffer bypass, Stock/Fast switch for quicker attack time and a Mix control for easy parallel compression, giving you legendary limiting effects for decades to come.
UAFX 2.0 Firmware Update
Launching November 11, 2025, the UAFX 2.0 firmware update delivers a major performance upgrade to Universal Audio’s two-button pedals, unlocking deep MIDI integration, enhanced footswitch control and streamlined app connectivity. Players can now select from four new footswitch modes—Live/Preset AB, A/Bypass + B/Bypass (Tour Mode), A/B–C/D and Boost + Live/Preset—ideal for live “channel-switching” workflows. The update introduces 128 recallable presets via MIDI Program Change, real-time parameter control through MIDI CC messages and MIDI beat clock sync for time-based effects including the Starlight Echo Station, Astra Modulation Machine, Galaxy ’74 Tape Echo & Reverb and Del-Verb Ambience Companion. Bluetooth connectivity has been rebuilt from the ground up for increased reliability, while a new wired USB connection enables direct app control from iOS or Android devices. USB MIDI support further enhances expression, preset switching and clock sync capabilities, making it easier than ever to integrate UAFX pedals into modern performance rigs. All updates are free and compatible exclusively with dual-footswitch UAFX models.
The UAFX LA-2A Studio Compressor puts legendary optical tube limiter sound at your feet, voiced to precisely match the original hand-wired hardware—with all the inspiring tone and classic feel on tap. Whether it's ringing clean tones and single-note guitar lines or adding focus to bass, synths and keys, the LA-2A enhances instruments like no other compressor. This pedal gives you all the big, three-dimensional sound of the original hardware—including its transformers, tubes and T4 optical cell distortions—right on your pedalboard.