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Name: Mike B.
Message: Steve: Yesterday, I installed the UltraSonic SS-7s to 'dampen' two CV4058 Mullard tubes in my C-J PV15. I honestly did not know what to expect, being inherently skeptical about 'tweaks' and the hype that precedes them. C-J had provided me with tube rings, silicone I believe, when I did their C1 upgrade to the PV15. I employed two of them per tube. But right from the initial note, I could hear change that was quite astonishing, and that on tubes near the end of their life. The improvements are in sound stage, detail, clarity and overall presence, most surprisingly to me was the bass deepened, like by a lot.

I use Ohm Walsh 3 speakers with their latest S3.300 drivers; what came our of them never sounded better. The music I heard sounded really life-like from a system that I have come to expect to sound life-like. Everything just became a bit more engaging and fun to listen to. Really, I can't believe I got all of that for less than $40!

So thank you, Steve. Now I need to dig around the rest of your product catalog.
Name: Martin D.
Message: Thank you mucho for the assistance I received over the phone and your fast response to filling my order. Kudos to Herbie's Audio Lab for such excellent customer service!

Name: Pat M.
Message: Hi Steve,

My entire system is outfitted with Tenderfeet and Iso-Cups under all my components.

4 Brass Cone/Spike Decoupling Gliders arrived today and went under the rack, they're beautiful!

The sound is dead quiet and musically involving in all parameters.

Thanks so much for your time and great service.


Name: Rob Burns
Message: I am probably the most skeptical person on this, and possibly any other planet. However, my new EL84 power tube was getting beaten to death in my Epiphone Valve Junior, and the tube rattle was unacceptable. Not sure what else to do, I decided to take a chance on the Guitar Amp UltraSonic 9. What could I lose with the satisfaction guarantee? After a week of use, I am amazed thus far with the results. I no longer detect any tube rattle, and between the new JJ's power tube and the UltraSonic 9, the amp sounds much cleaner and more articulate. Very pleased.
Name: Adam Moon
Message: Tenderfeet are an amazing product. Instantly my soundstage cleared up and there was better definition in all aspects. What I thought was a quiet system setup got even quieter with the addition of FAT dots to the speakers. You gave me back the enjoyment of my records again!
Name: Walter O.
Message: Steve, thank you. I have a McIntosh MDA-1000 DAC and removed the original feet and put the "Big Tall Tenderfoot" (from a previous order) under it. The difference is quite remarkable and unmistakable. There is a clarity and detail in the system now that I hadn't imagined. So I'm very impressed.
Name: Winston Smith
Message: Hi Steve-

I have some Spectron Musician III Ref 2 amplifiers that weigh 50 lbs each. Right now, I am fighting some upper midrange/lower treble aggression and congestion, which leads to a mild-to-moderate harshness and sibilance in this range, depending on the recording.

I am looking for footers to replace the stock footers and was wondering what you would suggest to use to address the harshness/sibilance, or simply to avoid adding to that problem, while clearing up the sound and providing improved clarity, detail, musicality and three dimensionality?



Webmaster's reply: Four Extra-Firm Tenderfoot isolation feet under each monoblock will isolate the amps superbly, bringing out more of their true inherent potential. Tenderfoot isolation feet have potential to improve or remedy each of the problems you've been fighting with.

Your audio system and all sonic qualities are not controlled solely by the amplifier, but is the sum total of all its parts, the vibrational environment, acoustic factors, and source electricity working together in synchrony. Addressing the amplifiers alone may or may not remedy the problems you've mentioned. You might need to isolate/decouple the speakers, isolate source components and preamp. Perhaps a mis-matched cable or interconnect is a culprit. Start with four Tenderfoot isolation feet under each amp, adjust the positioning and orientation of the footers for optimal result, and go from there. Might just be all you need to achieve a satisfactory level of listening pleasure.
Name: Eduardo Viladevall
Message: I received my Super Black Hole CD Mat yesterday, and I approached the evaluation basically the same way I approached the evaluation of SS-9 12AX7 dampers - expecting an incremental but not overwhelming improvement. I was wrong AGAIN ! This little donut is magic.On my CAL Delta transport it works miracles. I wont go into detail, but there is a stunning "naturalness" that was not ther ebefore. Each instrument has a life of its own now and have that live, you are there immediacy and detail. Halfway through my first test CD, I just went into right brain mode and fell into the music. No need to ask myself if it was better or just different. My music is so much more tuneful, melodic, whatever you want to use to describe it. I have spent maybe $60 on these products and EASILY gotten hundreds wort h of improvememnt. It;'s like getting new components every time. Miracles do happen and they cost about $30 each !!
Name: Angela
Message: Hello.
Name: Ed Viladevall
Message: Hi Herbie,

Received my SS-9 12AX7 dampers yesterday. I promptly installed them on my Golden Dragons in my CAL Alpha DAC expecting an incremental improvement-boy was I wrong ! The change is nothing short of stunning. My jaw dropped. I have never heard such detail (in this system at least) and air, such precise location, the bass tightened up dramatically. I have a small room with Martin Logan Source speakers, but the depth and width of the sound stage are amazing. On several recordings I can literally "hear" the space between a capella voices, or the individual instruments in a string pizzicato. These little things are nothing short of a revelation. THANK YOU !!
Name: Mark Ostrov
Message: Hi Steve,
I would like to say that I have enjoyed being a customer for some years now.
I use your products under my turntable and power supply, My 170 lb. Tyler D1 speakers, my tubed Tuner, Pre-amp and amp. They continue to beat anything stock for these items.
Your service has been helpful and prompt as well.
Best Regards,
Mark Ostrov
Name: Charles McGraw
Message: Hi Herbie,

A friend purchased your record mat for his Linn LP 12, and it truly makes all his lps sound much better. TWO BIG THUMBS UP!!

I will be ordering your Super Black Hole CD Mat.


Charles McGraw
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