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UltraSonic Rx Damping Instrument - Herbie's Audio Lab

UltraSonic Rx Damping Instrument

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From $26.95
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From $26.95
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UltraSonic Rx Damping Instruments help to bring out the microdynamic speed, linearity, and detail of your source material. Besides reducing microphonic anomalies, Rx 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. Your tube gear will achieve a fluid, dynamic musical potential like it was engineered to do.

Mildly spring-tempered titanium C-ring holds three modified PTFE isolation pads. Each pad holds a specially formulated polymer O-ring against the tube glass.

Herbie's most popular damping instrument, UltraSonic Rx is appropriate for all audio vacuum tubes, handling radiant heat up to a constant 482° F (250° C).


UltraSonic Rx-Mini: For sub-miniature and Nuvistor tubes approximately 3/8" diameter (9.2mm to 10.4mm), including 5703, 6111, 6112, 6020, 6021, 6088, 6CW4, 6DS4, 6DV4, 6N16B, 7586, 7587, 7895, 8056, 8058, T3 bulb.


UltraSonic Rx-7: For 7-pin miniature tubes and all tubes approximately 5/8" to 3/4" diameter (16mm to 19mm), including 0A2, 0B2, 0C2, 1S5, 12AE6, 12FK6, 12FM6, 12X4, 304B, 3A5, 3S4, 403A/B, 408A, 5591, 5651, 5654, 5654SQ/W, 6005, 6186, 6AK5, 6AK5W, 6AL5, 6AN4, 6AQ5, 6AQ6, 6AU6, 6BH6, 6C4, 6ER5, 6FG5, 6FQ5A, 6FS5, 6FY5, 6GK5, 6J1, 6J1P, 6J1P-EV, 6J6, 6N4, 6P17, 6X4, 6Z4, 7543, 9001, DCC90, DL92, EC90, EF95, M8100, OA2, OB2, OC2, SBA6. (Most 7-pin miniature tubes, at about 19mm diameter [3/4"], can also use UltraSonic 9.)


UltraSonic Rx-9: Fits miniature 9-pin tubes and all tubes 3/4" to 7/8" diameter (19mm to 22mm), including 10GV8, 12AT7/ECC81, 12AU7/ECC82, 12AV7,12AX7/ECC83, 12AY7, 12AZ7, 12B4, 12BH7, 12BY7, 12BZ7, 12DW7, 12FQ7, 2C51, 396, 396A, 417, 5670, 5687, 5751, 5755, 5814, 5842, 5879, 5963, 5965, 6072, 6189, 6201, 6267, 6350, 6385, 6414, 6519P, 6688, 6829, 6840, 6922, 6955, 6973, 6AN8, 6BL8, 6BM8/ECL82, 6BQ5/EL84, 6AW8, 6AW8A, 6BQ7, 6BZ7, 6BW4, 6C19P, 6CA4, 6C45, 6CG7, 6CS7, 6DE7, 6DJ8/ECC88, 6E5P/6E5PI, 6EJ7, 6EU7, 6FQ7, 6GC7, 6GF7A, 6GH8(A), 6GU7, 6GW8, 6H23N, 6H30, 6H6PI, 6N1P, 6N2, 6N2P, 6N23P, 6N30, 6N30P, 6N3P, 6N6/6H6PI, 6N6P, 6P1, 6P1P, 6P1P-EV/6II1II-EB, 6S19P, 6S4, 6U8(A), 6V4, 7025, 7044, 7058, 7062, 7119/E182CC, 7189, 7199, 7308, 7788, 7AU7, 7DJ8, 8416, CCa, D3a, E288CC, E80CC, E80F, E88CC, EC86, ECC189, ECC40, ECC802S, ECC803/S, ECC81, ECC82, ECC83, ECC85, ECC86, ECC99, ECF80, EL821, ECL86, EF184, EF800, EF86, EL821, EL84, EL86, EM84, EZ80, EZ81, M8162, PCC88, PCL82, PCL86, SV83, (T-6 1/2 bulb).


UltraSonic Rx-25: Fits all tubes approximately 1" to 1-1/16" diameter (23mm to 28mm), including metal 12SC7, 5693, "slim" 5Z4, "slim" 6AU4, metal shell 6F6, 6J5, 6R7, metal 6SC7, metal 6SJ7, "slim"6SN7, metal 6V6, 6X5.*


UltraSonic Rx-30: Fits narrow, straight-sided octal tubes and all tubes approximately 1-1/8" to 1-1/4" diameter (28mm to 32mm), including 0A3A (straight-sided), 1266, 12AX3, 12J5/GT, glass 12SJ7, 12SJ7GT, 12SL7/GT, 12SN7/GT, 3CM, 437A, 4P1L, 5691, 5692, 5852, "slim" 5AR4 (G.E., Sovtek/Reflektor, T-9 bulb), 5Y3, 5Y3GA, 5Y3GT, "wide" 5Z4, 6106, 68HC, 6AH4, 6AU4GT, 6AU4GTA, 6AU5, 6AX4GT, 6AX4GTA, 6AX4GTB, 6BL7, 6C5S, 6CJ3, 6D22S, 6DA4/6DA4A, 6DN7, 6EA7, 6EM6, 6EM7, 6EW7, straight-sided 6F6G, 6FD7, 6FM7, 6FY7, 6H4GT, 6J8P, 6K11, 6L6, 6N8P, 6N9P, 6R7GT (glass T-9 bulb), 6SC7 (glass tube), 6SF5-GT (glass tube), 6SH7, glass 6SJ7, 6SJ7GT, "slim" 6SL7, 6SN7, 6SN7GT-series (6SN7GT, 6SN7GTA, 6SN7GTB, 6SN7WGT, 6SN7WGTA), 6V6, 6V6GT (GE, Sylvania, Tung-Sol), 6X5G/GT/WGT, 6Y6, 7355, 7591, 7868, 7N7, C3G, C3M, EC8020, "narrow" EL34 (E-H, Mullard, SED "Winged C," Siemens, Svetlana, Telefunken, NOS Tesla, Tung-Sol), EL34/6CA7 (Svetlana), EL34B (Tung-Sol), GZ30, GZ34 (Gold Lion), MT8 bulb, PL504, OA3A (straight-sided), T-9 bulb, VT-231.*


UltraSonic Rx-35: Fits standard, straight-sided octals and all tubes approximately 1-5/16" to 1-7/16" diameter (33mm to 36mm), including 5AR4 (Amperex, G.E., Japanese "Mullard" copy, Mullard, JJ, Shuguang), "slim" 6CA7 (Tung-Sol), 6H6, standard 6L6/5881, 6L6B, 6L6GT, 6L6WGB, 6SF5 (metal shell), 6V6GT (RCA), 6V6S (JJ), E34LS, ECC33, medium-diameter EL34 (Amperex, Philips, JJ, some Mullards, Valvo), EL34B (Shuguang), GZ34 (GE, JJ, Mullard, Philips, Raytheon, RCA), KT77.*


UltraSonic Rx-40: Fits wide and bottle-shaped octals and all tubes approximately 1-1/2" to 1-5/8" diameter (37mm to 44mm), including 0A3 (bottle-shape), 0C3, 0D3, 1626, 19, 27, 30, 37, 3DG4, 520B (near bottom of tube), 5881, "fat-bottle" 5AR4 (Amperex, Mullard, T-11 bulb), 5AW4, straight-sided 5R4-types, straight-sided 5U4 and 5U4-GB (T-12 bulb), 5V3, 5V4, 5Y3GB, 5Y4GA, 5Z4G, 5Z4P, 6080, "slim" 6550, straight-sided 6AS7, 6BY5/G/GA (straight-sided), 6C6, 6C8G, "Big Bottle" 6CA7 (E-H, GE, Sylvania, etc.), "Black Bottle" 6CA7-Z, 6F8G, 6HB5, bottle-shape 6J5 (ST-12 bulb), 6JN6, 6L6GC(E-H, Mazda, JJ, GE, RCA, Sylvania, Tungsol), 6L6WGC, 6LF6, 6P3P, Sophia Electric "bottle" 6SL7 and 6SN7, 7027/A, 7236, 76, 84, 8417, 85, CV3798, "Fat Bottle" EL34 (Big Bottle), EL509, G75/2D, straight-sided GZ32, "slim bottle" GZ37, KT90, OA3 (bottle-shape), OC3, OD3, PL509, QS150/40, VR105, VR75/30, VR75/40.*


UltraSonic Rx-50: For all tubes approximately 1-3/4" to 2-1/8" diameter (45mm to 54mm), including 10Y, 101F, 1610, 2A3 (Brimar, E-H, E-H Gold, RCA, Sovtek, Sylvania, Tung-Sol), 26, 274B (Western Electric), 307A, 35, 350B, 3A/110A, 3A/110B, 3D21A, 421A, 422A, 45 (RCA, Sylvania, TJ, Tung-Sol), 46 bottle-shape, 572-10, 5998, bulb-shaped 5R4-types, 5R4WGA/B (Tung-Sol), bottle-shape 5U4G, 5V4, 5Y3G (Sylvania), 5Z3, 5Z3P/A, 5Z4G (Brimar), standard and wide 6550 (E-H, GE, Philips, RCA, SED, Svetlana, Sylvania, Tung Sol), 6550A, 6550C, bulb-shape 6AS7, 6AS7G, 6B4, 6B4G, 6BY5/G/GA (bottle-shape), 6CA7-Z, 6C33C (upper portion of tube), bulb-shape 6F6G, 6H13, 6H13C, bulb-shape 6L6G, 6N13P, 6Y6G, 71A, 80 bottle-shape, 801/801A, 807, straight-sided 811, 814, C327 ("bulb" 27), CX4, bottle-shaped octals like AZ4, CV181/ECC32, CV181TII (Psvane 6SN7), CV181-Z (Shuguang), CV378 (Mullard), EL156, EL37, bottle-shaped GZ32 (Mullard), GZ33, KT120, KT66, KT88 (E-H, EAT, GEC, Gold Lion/Genalex, JJ/Tesla, SED, Shuguang, Sovtek, Svetlana), PX4, ST-14 bulbST-16 bulb, U52.*


UltraSonic Rx-55: For jumbo-size tubes 2-3/16" to 2-5/16" diameter (55mm to 59mm), including 101D/101F, narrow 211 (RCA), 211/VT-4C (GE), 2A3 (EML), 2A3-Mesh (EML), 274A, 300B "Balloon" (KR), Svetlana 300B, Takatsuki TA-300B, 45 (EML), 46 globe-shape, large bottle 5Y3GB (smaller Mazda uses UltraSonic 40), 80 globe-shape, "narrow" 805 (RCA, United), 829B, 841, 842, narrow 845 (Amperex, RCA), 845A (Shuguang), 872, GE211, "Big Bottle" GZ37, KT150 (specify size "60" in comments section of order form), SV811-10, ST-17 bulb, T-18 bulb.*


UltraSonic Rx-65: With plenty of flex to accomodate a wide range of tube diameters, fits giant tubes from 2-3/8" to 3" diameter (60mm to 76mm), including 101D "tennis ball," 101J, 102B, wide 211 (Sophia, TJ), 274B (EML, Shuguang, Sophia, Valve Art), 2A3-40W (JJ), 2A3 Meshplate (Sophia, TJ), 2A3 Globe Meshplate (Sophia, TJ), 2A3C (Shuguang), 300B (AVVT, E-H, EML, JJ/Tesla, Sovtek, KR, TJ/Full Music, Western Electric), 300B-XLS (EML, KR), Meshplate 300B (EML, Golden Dragon, TJ, Sophia, Shuguang, Valve Art), 300B Globe Meshplate (Sophia, TJ), 32B, Globe 45 (TJ/Full Music/Sophia), 45C, 45N, EML 45-mesh, 50, 520B, EML 5U4G-Mesh & 5Z3-Mesh,6C33C (wide portion of tube), 803, "wide" 805 (Amperex, Shuguang, TJ), 811A, 813, wide 845 (Sophia, Shuguang metal plate, TJ), 845B (Shuguang), F2A, GM70, PX25, ST-18 bulb, ST-19 bulbT-20 bulb.*


UltraSonic Rx-100: With extra-heavy-gauge stainless steel C-ring and four isolation pads, UltraSonic 100 dampers thoroughly tame microphonics in super-giant tubes 3-1/2" to 4-5/8" diameter (89mm to 118mm), including 833, KR T-1610 (Kronzilla), and tubes using T-36 bulb.


Changing Gear?  UltraSonic Rx isolation pads can be slid off one titanium C-ring and onto another. If you need a different size than what you have, spare C-rings are available, so you don't have to buy a whole damping instrument to change sizes.

Go to UltraSonic Rx C-rings

Go to UltraSonic Rx Isolation Pad Only

Customer Reviews
4.9 Based on 49 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
PN
06/12/2021
Pedro N.
Portugal Portugal
I recommend this product
I have not received anything yet

I am very disappointed I have been waiting now for more then two months without any news from you

A
05/26/2021
Anonymous
United States United States
I recommend this product
UltraSonic RX Damping Instrument RX-40 & RX-50

I recently purchased these items with the hope of taming down some noisy NOS power tubes. These really helped and my amp sounds better to me now. I recommend this product!

A
05/26/2021
Anonymous
United States United States
I recommend this product
UltraSonic RX Damping Instrument RX-40 & RX-50

I recently purchased these items with the hope of taming down some noisy NOS power tubes. These really helped and my amp sounds better to me now. I recommend this product!

A
05/18/2021
Anonymous
United States United States
I recommend this product
Great buy!

These UltraSonic RX dampers for 6SN7's work as well as the ones previously purchased from Herbie's for my smaller tubes - which is to say - great! Easy to to apply and to adjust, these really help to minimize my JJ's tube noise. Thanks for the exceptional product performance and price! Best regards, Adam Adam

A
04/26/2021
Anonymous
United States United States
I recommend this product
Tube dampers.

Your tube dampers are wonderful. They are very well made and fit the tubes nice and tightly. Thank you for designing these unique products.

A
03/25/2021
Anonymous
United Kingdom United Kingdom
I recommend this product
UltraSonicRx9

Great service, and very good product. 3 Rx9's replaced silicon rings on an 12AUX and 2 x EF800's in an Octave preamp. There was an improvement, subtle, but worthwhile, a little more life overall and high frequencies now very smooth. Thoroughly recommended

AS
03/25/2021
Artem S.
Russia Russia
UltraSonic Rx Damping Instrument, Rx-35

Dampers really work! Tool for fine tuning the system.

PE
03/20/2021
Paul E.
United States United States
Ultrasonic Rx9

Thank you for the simple return, when I messed up my first order. I tried them yesterday. The best way I can describe the difference is that everything is quieter and cleaner. I think it is worth the money.

Herbie's Audio Lab UltraSonic Rx Damping Instrument Review
JS
03/08/2021
Jack S.
United States United States
Good Service and Tube Dampers

Two tube dampers reached us timely. Dampers installed on PS Audio Stellar 1200. Immediate improvement in sound far beyond the time and cost involved.

JM
01/31/2021
Javier M.
United States United States
Dolce Música

Love the music ultra sonic hands on...

S
01/09/2021
Sergey
Russia Russia
Rescuing digital sound

these accessories to be the best upgrade of my system in the last 15 years. I am sure this will be a salvation for those who believe that in their system only one step is needed for perfection, but it never comes. Herbie dampers maximally soften the sound and make it both solid and analog.

Herbie's Audio Lab UltraSonic Rx Damping Instrument Review
RH
12/13/2020
Roman H.
Czech Republic Czech Republic
UltraSonic Rx Damping Instrument.

Excellent product. Great improvement in tonality, separation and localization of instruments. Thank you Robert!

Customer Reviews
4.9 Based on 49 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
PN
06/12/2021
Pedro N.
Portugal Portugal
I recommend this product
I have not received anything yet

I am very disappointed I have been waiting now for more then two months without any news from you

A
05/26/2021
Anonymous
United States United States
I recommend this product
UltraSonic RX Damping Instrument RX-40 & RX-50

I recently purchased these items with the hope of taming down some noisy NOS power tubes. These really helped and my amp sounds better to me now. I recommend this product!

A
05/26/2021
Anonymous
United States United States
I recommend this product
UltraSonic RX Damping Instrument RX-40 & RX-50

I recently purchased these items with the hope of taming down some noisy NOS power tubes. These really helped and my amp sounds better to me now. I recommend this product!

A
05/18/2021
Anonymous
United States United States
I recommend this product
Great buy!

These UltraSonic RX dampers for 6SN7's work as well as the ones previously purchased from Herbie's for my smaller tubes - which is to say - great! Easy to to apply and to adjust, these really help to minimize my JJ's tube noise. Thanks for the exceptional product performance and price! Best regards, Adam Adam

A
04/26/2021
Anonymous
United States United States
I recommend this product
Tube dampers.

Your tube dampers are wonderful. They are very well made and fit the tubes nice and tightly. Thank you for designing these unique products.

A
03/25/2021
Anonymous
United Kingdom United Kingdom
I recommend this product
UltraSonicRx9

Great service, and very good product. 3 Rx9's replaced silicon rings on an 12AUX and 2 x EF800's in an Octave preamp. There was an improvement, subtle, but worthwhile, a little more life overall and high frequencies now very smooth. Thoroughly recommended

AS
03/25/2021
Artem S.
Russia Russia
UltraSonic Rx Damping Instrument, Rx-35

Dampers really work! Tool for fine tuning the system.

PE
03/20/2021
Paul E.
United States United States
Ultrasonic Rx9

Thank you for the simple return, when I messed up my first order. I tried them yesterday. The best way I can describe the difference is that everything is quieter and cleaner. I think it is worth the money.

Herbie's Audio Lab UltraSonic Rx Damping Instrument Review
JS
03/08/2021
Jack S.
United States United States
Good Service and Tube Dampers

Two tube dampers reached us timely. Dampers installed on PS Audio Stellar 1200. Immediate improvement in sound far beyond the time and cost involved.

JM
01/31/2021
Javier M.
United States United States
Dolce Música

Love the music ultra sonic hands on...

S
01/09/2021
Sergey
Russia Russia
Rescuing digital sound

these accessories to be the best upgrade of my system in the last 15 years. I am sure this will be a salvation for those who believe that in their system only one step is needed for perfection, but it never comes. Herbie dampers maximally soften the sound and make it both solid and analog.

Herbie's Audio Lab UltraSonic Rx Damping Instrument Review
RH
12/13/2020
Roman H.
Czech Republic Czech Republic
UltraSonic Rx Damping Instrument.

Excellent product. Great improvement in tonality, separation and localization of instruments. Thank you Robert!