EXPRESSION PEDAL ISOLATOR (Platinum Edition)

🇺🇸 MADE IN THE USA 🇺🇸

Expression Pedal Isolator | Clean Expression Control

The Harrison Labs Expression Pedal Isolator is a high-quality passive isolation solution designed for Allen MOS-1, MOS-2, Allen Analog organs, and other organ systems using either 2-lead potentiometer or photoresistor-style expression pedals. Engineered to eliminate expression signal loss caused by aftermarket audio upgrades and external source devices, this compact isolator helps preserve smooth, accurate pedal response while maintaining exceptional audio performance.

Ideal for use with organ DAC boards, DSP systems, and tone generator upgrades such as the Harrison Labs DSP and TWG systems, the Expression Pedal Isolator installs easily either before the expression pedal connection or directly after an added source device. Its passive design requires no external power, making installation simple and reliable in both vintage and modern organ setups.

Built with audiophile-grade performance in mind, the Harrison Labs Expression Pedal Isolator uses RCA connections for seamless integration and can also be used to combine additional audio sources — including MIDI sound modules, computer audio interfaces, and sound cards — back into the original organ sound system when used with RCA Y-adapters.

Proudly Made in the USA, this isolator delivers professional signal integrity and dependable performance at an affordable price.

Features

• Designed for Allen MOS-1, MOS-2, and Allen Analog organs
• Compatible with 2-lead potentiometer and photoresistor expression pedals
• Eliminates expression loss caused by aftermarket upgrades
• Ideal for DSP boards, DAC upgrades, and tone generator installations
• Passive design requires no power
• RCA input/output connections
• Helps integrate external MIDI and computer audio sources
• Compact inline installation
• Audiophile-quality signal performance
• Made in the USA

Perfect For

• Allen organ upgrades
• Organ restoration projects
• MIDI organ integration
• DSP and DAC board installations
• Expression pedal troubleshooting
• Audiophile organ audio systems
• Vintage and modern organ modificatio