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Herbie's Audio Lab's UltraSonic UltraSonic Rx-7 Damping Instrument

Tube Accessories by Herbie's Audio Lab

Our pricing for this product is "MAP Pricing," which means the "minimum advertised price" permitted by the manufacturer. When calculating your final price we will compare the price with your "Frequent Flyer" ...pricing incentives included to the MAP price. Whichever is lower is the final price you will pay.

Manufacturer's Description:

UltraSonic Rx-7

For 7-pin miniature tubes and all tubes approximately 5/8" to 3/4" diameter (16mm to 19mm), including 0A2, OA2, 0B2, OB2, 1S5, 12AE6, 12FK6, 12FM6, 12X4, 304B, 3S4, 403A/B, 408A, 5591, 5651, 5654, 6005, 6186, 6AK5, 6AN4, 6AU6, 6BH6, 6C4, 6ER5, 6FG5, 6GK5, 6J1, 6J6, 6N4, 6P17, 6X4, miniature 6Z4, 7543, EC90, EF95, SBA6. (Most 7-pin miniature tubes, at about 19mm diameter [3/4"], can also use UltraSonic 9.)

UltraSonic Rx Damping Instruments feature perfluoroelastomer O-rings (Kalrez formula 7075) that handle continuous temperature to 600°F (316°C). The firm-yet-compliant O-rings, held in place by homopolymer-modified Teflon pads and tempered titanium C-ring, establish a new acme of audio perfection.

While maintaining the same microdynamic speed, linearity, and detail of Herbie's UltraSonic series, Rx goes a bit further. Besides reducing microphonic anomalies, Rx blends in a subtle contra-vibration that allows a freer musical flow, curing a harsh and stealthy "electronics factor" or "dryness" that ultimately ails even some of the most finely honed audio systems.

A subtly nuanced yet distinct UltraSonic enhancement, Rx is in a league of its own. Your tube gear, no matter how hi-end or how close to sonic perfection, will achieve a fluid, musical potential virtually impossible to achieve until now.

Herbie's top-of-the-line and the world's finest vacuum tube damper, UltraSonic Rx is appropriate for all audio vacuum tubes. Scroll down for size listings, from smallest to largest.

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Price: $28.66
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