Check the listing for details. Strymon PCH-X2 Active Stereo DI Isolater. Condition: New. Listed at 299.00 USD. Set Your Signal Up for Success Sweetwater studio engineers painstakingly scrutinize every part of their signal chains to ensure they're getting the best audio quality possible, and this is why they're raving about the new PCH-X2 active DI box from Strymon! This 2-channel, phantom-powered active DI isolator is equipped with per-channel custom isolated audio transformers that facilitate astonishingly low total harmonic distortion (THD) and a flat frequency response for the most accurate, pristine-sounding signal possible. Strymon goes the extra mile by featuring built-in 3-position highpass filters (HPFs) on each input for cleaning up muddy mixes and cutting low-end distortion alongside integrated Ground/Lift switches for deftly attenuating 60-cycle hum and unwanted noise.