Here is Shun Mook's Description:The Shu Mook Valve Resonators are designed to enhance the performance of miniature electron tubes. The main function are: Reduces total harmonic distortion
Damping of tube glass resonance and ringing
Filters electromechanically vibrations.
Adds rich musical harmonics to its output signal. The Shun Mook VRs are made from African Mpingo Ebony treated with a proprietary process that allows for maximum resonance of its musical energy spectrum. Application is simply by placement of a VR on top a signal tube of a pre-amp, power-amp, or DAC UNITS. The improvement is immediate with a cleanup of the sound field, sharpening of the imaging and increased dynamic transient energy. The sound stage will become wide and deep with better separation of the musical components plus a pronounced increase in inner details. The result is like turning your ordinary brand signal tubes to a high-grade low noise name brand tube with increase warmth and sweetness to your music. I got these directly from Shun Mook, they may have been B-stock as one has a cosmetic flaw on outside of cap, see photos. Rated 7 due to flaw, otherwise, condition is just like I got them. Contact me with any questions or offers.
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