Free shipping on domestic orders of $150!

Guitar Amp UltraSonic - Herbie's Audio Lab

Guitar Amp UltraSonic

Regular price
From $28.65
Sale price
From $28.65
Quantity must be 1 or more

Guitar amplifiers, especially combo amps, are torture chambers to vacuum tube microphonics. Herbie's extra-duty Guitar Amp UltraSonic Damping Instruments feature titanium C-rings and extra-soft, jumbo-size isolation pads for extra vibration control. Guitar Amp UltraSonics eliminate tube rattle, tube whistling, and microphonic oscillation that might be too severe for other damping instruments to handle.

These are superb damping instruments also for hi-end home audio, delivering pinpoint imaging and detail, outstanding transparency, delicate nuance and sense of "air," with highly punctual dynamics.

For use up to 482° F (250° C); scroll down for size listings.


Guitar Amp UltraSonic 9: Fits miniature 9-pin tubes and all tubes 3/4" to 7/8" diameter (19mm to 22mm), including 10GV8, 12AT7/ECC81, 12AU7/ECC82, 12AX7/ECC83, 12AY7, 12AZ7, 12B4, 12BH7, 12BY7, 12BZ7, 12DW7, 12FQ7, 2C51/396, 396A, 417, 5670, 5687, 5751, 5814, 5842, 5879, 5963, 6072, 6189, 6201, 6267, 6350, 6385, 6414, 6688, 6829, 6840, 6922, 6955, 6973, 6AN8, 6BL8, 6BM8/ECL82, 6BQ5/EL84, 6BQ7, 6BW4, 6CA4, 6C45, 6CG7, 6CS7, 6DE7, 6DJ8/ECC88, 6EU7, 6FQ7, 6GC7, 6GH8(A), 6GW8, 6H30, 6GU7, 6N1P, 6N3P, 6N6(P), 6P1T, 6U8(A), 6V4, 7025, 7044, 7058, 7062, 7119/E182CC, 7189, 7199, 7308, 7788, 7AU7, 7DJ8, 8416, Cca, E80F, EC86, ECC189, ECC803/S, ECC81, ECC82, ECC83, ECC85, ECC86, ECC99, ECL86, EF800, EF86, EL821, EL84, EL86, EM84, EZ80, EZ81, PCL82, PCL86, SV83, T6-1/2 bulb.


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


Guitar Amp UltraSonic 30: Fits narrow, straight-sided octal tubes and all tubes approximately 1-1/8" to 1-1/4" diameter (28mm to 32mm), including 12J5/GT, glass 12SJ7, 12SL7/GT, 12SN7/GT, 3CM, 4P1L, 5691, 5692, "slim" 5AR4 (G.E.), 5Y3, 5Y3GT, "wide" 5Z4, 6106, 6AH4, 6AU4GT, 6AU4GTA, 6AU5, 6BL7, 6CJ3, 6DN7, 6EA7, 6EM6, 6EM7, 6EW7, straight-sided 6F6G, 6FD7, 6FY7, 6H4GT, 6J8P, 6K11, "slim" 6L6, 6N8P, 6N9P, 6SC7 (glass tube), 6SF5-GT (glass tube), 6SH7, glass 6SJ7, 6SJ7GT, 6SL7, 6SN7, 6SN7GT-series (6SN7GT, 6SN7GTA, 6SN7GTB, 6SN7WGT, 6SN7WGTA), 6V6, 6V6GC, 6X5G/GT/WGT, 6Y6, 7355, C3G, C3M, EC8020, "narrow" EL34 (E-H,Mesa/Boogie,Telefunken, SED "Winged C," Svetlana, Tung-Sol), EL34B (Tung-Sol), GZ30, MT8 bulb, PL504, VT-231.*


Guitar Amp UltraSonic 35: Fits standard, straight-sided octals and all tubes approximately 1-3/8" diameter (33mm to 36mm), 5AR4(Amperex, Mullard), "slim" 6CA7, 6H6, bottle-shaped 6J5, standard 6L6/5881, 6L6B, 6L6GT, 6L6WGB, 6R7GT (glass), 6SF5 (metal shell), 6V6S (JJ), E34LS, standard EL34 (Philips, JJ, Mullard), GZ34, KT77.*


Guitar Amp UltraSonic 40: Fits wide and bottle-shaped octals and all tubes approximately 1-1/2" to 1-5/8" diameter (37mm to 44mm), including 0A3, 0C3, 0D3, 1626, 27, 30, 37, "fat-bottle" 5AR4, 5AW4, straight-sided 5R4-types, straight-sided 5U4, 5V3, 5V4, straight-sided 5Y3GB, small-bottle 5Y3GB (Mazda), 5Y4GA, 5Z4G, 5Z4P, 6080, "slim" 6550, straight-sided 6AS7, 6C6, 6CA7, 6F8G, 6HB5, bottle-shape 6J5, 6JN6, 6L6GC (Mazda, JJ, GE, Tungsol), 6P3P, Sophia Electric "bottle" 6SL7 and 6SN7, 7027/A, 76, 84, 8417, 85, EL509, straight-sided GZ32, "Fat Bottle" EL34 (Big Bottle), KT90, PL509.*


Guitar Amp UltraSonic 50: For all tubes approximately 1-3/4" to 2-1/8" diameter (45mm to 54mm), including 1610, 2A3 (RCA, Sovtek, Sylvania, Tung-Sol, Brimar), 26, 274B (Western Electric), 350B, 3D21A, 421A, 422A, 45 (RCA, Sylvania, TJ, Tung-Sol), 572-10, 5998, bulb-shaped 5R4-types, 5R4WGA/B (Tung-Sol), bottle-shape 5U4G, 5V4, 5Z3, standard and wide 6550 (E-H, RCA, SED, Svetlana, Tung Sol), 6550C, bulb-shape 6AS7, 6AS7G, 6B4, 6B4G, 6C33C (upper portion of tube), bulb-shape 6F6G, bulb-shape 6L6G, 6N13P, 71A, 80, 807, 811, 814, C327 ("bulb" 27), CX4, bottle-shaped octals like AZ4, CV181/ECC32, CV181-Z (Shuguang), EL37, bottle-shaped GZ32, GZ33, KT66, KT88 (E-H, EAT, GEC, Gold Lion/Genalex, JJ/Tesla, SED, Shuguang, Sovtek, Svetlana), U52.*


Changing Gear? Guitar Amp UltraSonic 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 Guitar Amp UltraSonic C-Ring

Go to Guitar Amp UltraSonic Isolation Pad Only

Customer Reviews

5 Based on 8 Reviews
5 ★
100% 
8
4 ★
0% 
0
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
0
Customer Photos
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:
BR
Blane R.
United States
11/19/2019

Works like a charm!

Have a '57 Mullard long plate ECC83 in my guitar amp that was microphonic and became noisy beyond use. Being as these tubes are expensive and hard to find I gave Herbie's Guitar Amp UltraSonic a shot. I found it to solve all of the issue the tube was having. I experimented with the placement of the UltraSonic on the tube and discovered it changes the tone and response depending where it's placed. Placed about 1/4 inch from the tube end and am very happy with the tone! I highly recommend for noisy or flubby tubes but experiment with the placement for best results.

SL
Stephen L.
United States United States
11/16/2019

Perfect EF86 Tone

The Guitar Amp UltraSonic Tube Damper was the perfect solution to a super microphonic EF86 in my Matchless SC30.

Stephen Leiweke verified customer review of Guitar Amp UltraSonic
MF
mark f.
United States United States
11/13/2019

got them quick

try again later after installation

EC
Elton C.
United States United States
10/03/2019

Great product

I purchased a set of these tube dampers for my preamp and dac. They have done a great job improving the over all clarity of my system.

Elton C. verified customer review of Guitar Amp UltraSonicElton C. verified customer review of Guitar Amp UltraSonic
GT
George T.
Bulgaria Bulgaria
09/10/2019

Guitar Amp UltraSonic

Simply, the best!

George T. verified customer review of Guitar Amp UltraSonicGeorge T. verified customer review of Guitar Amp UltraSonic
GT
George T.
Bulgaria
03/07/2019

Guitar Amp UltraSonic

after testing all the well-known ones tube dumpers these are just the best

George T. verified customer review of Guitar Amp UltraSonicGeorge T. verified customer review of Guitar Amp UltraSonic
SK
Steven K.
United States
01/17/2019

UltraSonic Rx Damping lived up to your description

Putting the UltraSonics Rx on the four critical tubes of my Audio Research Pre amp eliminated artificial brightness and produced rich focused images. At any level, the sound was never fatiguing yet alive and exciting. My Martin Logan Montis never sound so good. The UltraSonics were far superior to my sorbane and EAT tube dampers. Ultrasonics are an amazing audio bargain.

JB
Jeffrey B.
United States
12/28/2018

Herbies' Guitar Amp Ultrasonic 40 tube dampers

As I expected from experience with Herbies' tubedampers on other tubes, adding these dampers to the output tubes* of my Atma-Sphere M60 poweramps reduced the slight edginess in the sound...that I didn't know existed until I reduced it. * Russian 6H13Cs.

Jeffrey B. verified customer review of Guitar Amp UltraSonicJeffrey B. verified customer review of Guitar Amp UltraSonic