Custom Cylindrical XLR FMOD ™ Passive Inline Filters & Attenuators

Upgrade your pro audio signal path with Harrison Labs Custom Cylindrical XLR units. Built for high-performance audio engineering, these premium inline tools are engineered to handle your critical frequency shaping, signal management, and level control needs with zero noise and absolute precision.

Each unit is custom manufactured using top-tier, heavy-duty Switchcraft connectors and housings for maximum durability, pristine shielding, and exceptional contact reliability in demanding studio, live sound, or broadcast environments. Available as High Pass and Low Pass crossover filters as well as passive inline attenuators, these units cover both your frequency shaping and gain-matching needs in the same rugged cylindrical XLR format.

Key features

Balanced Mono Architecture: These are true balanced mono XLR units designed to maintain complete signal integrity and maximum noise rejection over long cable runs.

Stereo Requirements: Sold individually as mono units. Two units are necessary for a stereo setup (one for the Left channel, one for the Right channel).

Standard Orientation: Engineered with a Female Input and Male Output for standard inline placement along your signal chain.

🇺🇸 MADE IN THE USA 🇺🇸