If you are interested in these products, you can e-mail us at shunmook@gmail.com.
The Shun Mook Power Tube Resonators use the same design principles as the mini-valve resonators. Only the physical size of the PTR is much larger due to the higher level of energy flowing through the bulb. The PTR is designed for placement on top of the vacuum tube; its body is approximately 1.4 inches in diameter by 1-inch in height.
Three silver alloy wire legs firmly hold the PTR to the top of the vacuum tube. The legs are sized at the Shun Mook Workshop for large, medium and small (1.75", 1.5", and 1.25" average glass diameter) vacuum tubes. However, the user can bend and make adjustments to the legs to fit slight variations in different tube brands. In the case of tubes like the 300B or KT88, the legs are set for the top portion of the glass dome.
Due to the high heat output of most tubes, the PTR is treated with a special heat resistant epoxy coating. In normal operation, the wood will get very hot which means the molecules inside are excited and resonating musical energy to enhance the bulb's performance.
The PTR is packaged in sets of two. For multi-tube power amps, it is not necessary to cover all output tubes with PTRs. Usually one or two per channel will be enough for a big improvement. It's like upgrading your ordinary vacuum tube to those famous brand name NOS models.
The Shun Mook Valve Resonators are designed to enhance the performance of miniature electron tubes. The main functions are:
- Reduces total harmonic distortion.
- Damping of tube glass resonance and ringing.
- Filters electro-mechanical 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 of 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 increased warmth and sweetness to your music.