Smooths out harsh micro-vibrations; partially decouples nut from signal path, allowing a more-direct signal path. Restricting the musical signal from wandering all around the nut or tightening mechanism allows a potential reduction of passive signal intermodulation and phase distortions. Washers have a slight compliance or "give" to them, greatly reducing the risk of stripping brass or copper threads; provides a generally "tighter" yet expansive musical result. Though sonic benefit is subtle and difficult to pin down in A/B auditions, Binding Post Washers tend to help deliver a less-fatiquing yet lively prolonged listening session. For 1/4" or 5/16" posts. Washer is very firm, slightly flexible, .062" thick.
Spade: Hand-shaped dielectric fiber washers snap into place laterally, between spade and tightening nut of 5-way binding posts.
Donut: Donut-shaped dielectric fiber washer slips over straight stud-type binding post for use between spade or bare wire and tightening nut.
On a revealing system with good recordings, the changes are subtle but meaningful. Everything is tighter. The timbre of instruments becomes more lifelike. Singers and the space around them become better defined. With lesser recordings, the changes are less obvious but still noticeable. Your mileage may vary on less revealing systems. If you’re wondering if you should try these, you should be able to equip your system for less than $5 USD (just add them on when you order something else). Have some fun! Binding Post Washers (set of four 6mm donuts on amps; two sets of four 8mm donuts on bi-wired speakers; check binding post size before ordering)
I’m not sure how much of an individual effect it has on my system, but I find all Herbie’s isolation to work well together and have a cumulative positive sonic impact. My system sounds better than ever and it is uses multiple isolation products by Herbie’s Audio.
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