UltraSonic Rx-Mini Damping Instrument
Our pricing for this product is the "MAP Pricing." This means that the prices shown here are the "minimum advertised prices" permitted by the manufacturer.
For sub-miniature and Nuvistor tubes approximately 3/8" diameter (9.2mm to 10.4mm), including 5703, 6111, 6112, 6020, 6021, 6CW4, 6DS4, 6DV4, 6N16B, 7586, 7587, 7895, 8056, 8058, T3 bulb.
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.