SKU: 31087217979
sh9 pedal

sh9 pedal SH9™ Scott Henderson signature distortion

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Description

sh9 pedal SH9™ Scott Henderson signature distortionORDER NOW! Please allow up to 10 business days for us to build and test your SH9. TWA SH9 Scott Henderson Signature Distortion "The SH9 is the best distortion pedal Ive heard for live playing, and sounds equally great on the bridge and neck pickups. It has all the compression and punchiness needed for legato playing, plus a versatile tone knob, a low, clear bass frequency, and an overall fat and musical tone. This pedal rocks!" Scott Henderson

ORDER NOW! Please allow up to 10 business days for us to build and test your SH9™.


TWA SH9™ Scott Henderson Signature Distortion

"The SH9 is the best distortion pedal I’ve heard for live playing, and sounds equally great on the bridge and neck pickups. It has all the compression and punchiness needed for legato playing, plus a versatile tone knob, a low, clear bass frequency, and an overall fat and musical tone. This pedal rocks!"
-Scott Henderson

  • Signature distortion pedal inspired by classic SD-9 circuit
  • Thick, compressed, amp-like tone
  • Improved Bass and lower Midrange response
  • Increased “girth” on high-register notes
  • Allows notes to “speak” properly
  • Increased output level
  • JRC4558 OpAmp
  • Optional 18vdc operation for increased headroom, less compression and alternate drive signature
  • True Bypass switching
  • Die cast zinc enclosure with custom powder coat
  • Made in USA


    Click to read the GP Review.

For the past 20 years, Jazz Fusion guitar great Scott Henderson has had a Maxon SD-9 Sonic Distortion parked on his pedalboard.  He’s even gone so far as to call it “…the best distortion pedal ever made.

Yet for all his praises, there were several shortcomings to the SD-9 that many players –Scott included– had discovered.  Chief among these were a loss of low-end on high notes and a Tone control that was basically unusable past the 9 o’clock setting.

Over the years, many boutique pedal builders have modified the SD-9 in hopes of improving its performance, but they have all missed the mark—Until now.

TWA is very excited to announce our first signature model, as well as our first collaboration with Tube Screamer creator Susumu Tamura – the Scott Henderson SH9 Signature Distortion.

With the SH9, Mr. Tamura has taken the basic SD-9 circuit architecture that he invented in 1981 and re-worked it to meet Scott Henderson’s exacting performance standards.

Mr. Tamura has shifted the center frequency of the SH9’s Tone control and focused it in the lows and lower-mids.  Even as the Tone control is turned up, there is no loss of the bass frequencies that Scott considers essential for allowing notes to speak properly in the higher registers on the guitar.

This increased note girth combined with the SH9’s inherently compressed sound allows Scott to effortlessly articulate the fluid, horn-like lead tones that he is known for.

Another useful improvement to the SH9 circuit is an increased output level that helps the pedal to be heard clearly in a full band context.

Mr. Tamura also designed the SH9 to operate with 9-or 18-volt power.  Although Scott only uses the pedal with 9-volts, powering it with 18 VDC will allow for increased headroom with less compression and a slightly different character to the distortion.

The SH9 is housed in a die-cast zinc chassis and coated with a beautiful and durable metallic purple powder coating that was chosen by Scott (we love it too!).

Only the highest quality components such as ALPS potentiometers, Marushin Jacks, KOA/Speer resistors and WIMA, Nichicon & Kemet capacitors are used in the SH9 circuit in order to maintain the highest standards of tonal reproduction.

The SH9 is available with two different faceplate screens:  The first version highlights the SH9 logo in the same trademark lime-green color as the original SD-9, while the second, all-white screen features a replication of Scott’s signature.

We would like to offer our heartfelt thanks to both Scott Henderson and Susumu Tamura for their involvement in this project and their willingness to go above and beyond the norm.  We have learned many invaluable lessons during our interactions with these two Masters of their crafts. 

We are deeply honored to have been a part of the SH9 development.  We had been knocking this one about for the better part of three years, and there were several times that we didn’t think it would get off the ground – we’re very pleased that the SH9 has finally taken flight.

PLEASE NOTE: Due to the limited nature of this pedal, long lead-times, and non-refundable transaction fees a 20% restocking fee will be charged on all canceled orders.


CLICK HERE TO READ THE FULL BACKSTORY

 

 

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SKU: 31087217979

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4.2 ★★★★★
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ralversity
Waukegan, US
★★★★★ 3
Does the job, but assembling by yourself is a nightmare
Size: 4 Panel-88'', Color: Black
Does it do the job? Yes, although as others said there are small gaps but it's not a huge deal. The price is also good. But the reason I'm giving it a 3/5 is simply because the assembly for this was a complete nightmare. I honestly don't think I would recommend this to anyone unless they have another person to help them assemble it, because doing it by myself was terrible. I don't think I'd buy this again, I think I'd opt to just spend a bit more money and save myself the trouble personally.
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Reviewed in the United States on May 29, 2026
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Talagand
Lexington, US
★★★★★ 4
Reasonably adequate room divider
Size: 4 Panel-88'', Color: Beige
I'm reviewing this as I assemble it. Couple things: 1. I didn't expect as much assembly. I've ordered dividers before and they more-or-less came as one unit. Sometimes the panels needed screwing together. These require complete assembly and come largely as three rods: two make up vertical columns and snap together. Another one (called part "C") makes the horizontal columns and you have two of these per panel (one attaches to part "A" and the other part "B"). These parts are metal with a plastic shim. Using the wood screws to attach to part "C" is a real pain in the neck. There's not much holding the panel in place so it's a little tricky. One tactic I've found while I'm assembling that works for the initial connections from parts A and B to their respective "C" rods is to hold the screw in place with a screw driver and then rotating the rod around the screw. This will do a number on your hands if you aren't wearing gloves. This obviously doesn't work when completing the connection. Using a driller driver on this is really near impossible because there isn't anything you can use to secure it in place. You can use it on the first panel, but as it gets longer, it becomes increasingly difficult and because it isn't wood, it's really tight. I considered drilling larger pilot holes but since there are only 4x4=16 screws I need to screw in, I just decided to use my screw driver to complete it. 2. Also related to assembly. When completing the panels (attaching parts "A" and "B" to parts "C" that have the cloth cover on it), you have to be careful that when you tighten that side that it isn't loosening the other side. Because the pilot holes are so tight, you can end up rotating the rod, which rotates it in the same direction as looser on the original side. Having someone hold the "C" rod in place while you screw it in is probably the easiest approach. I didn't have a 2nd person, so I just had to keep flipping back and forth and tightening both sides as I screwed it in. Not the worlds biggest deal, but annoying nonetheless. 3. The way the instructions are written, they seem to suggest building this thing progressively; that is, you do panel 1, then 2, connect them together, then do 3 and connect it, etc. I took a different route that I suspect saved me quite a bit of trouble, and I assembled all four panels first and THEN connected everything together. 4. For the love of God make sure you check that the plastic tip is on the same side for every panel. Otherwise, you have to take one side apart again and reverse it. On the bright side, if this happens, you've essentially bored out the pilot holes to be the correct size... which is having me question if I shouldn't have just bored them out to the appropriate width in the first place. 5. Attaching all of the panels together is also an enormous pain in the ass unless you happen to have an 88" long elevated surface. Attaching the legs either requires you to elevate one side, which will invariably twist the inexplicably cheap material in the bottom connectors... or you can attach them sideways... or you can put this thing upright, having two people hold the panels in place while you use the allen wrench to tighten the bolts on the underside. None of those are particularly great options. NOW on to the utility itself. 1. The panels do let some light through (I didn't believe their advertising, and that was one of the reasons that I bought beige, is that I wanted it to not be too dark). They aren't transparent though, so it isn't that far off from their description. They functionally work great, and keep the mess of wires hidden and when I'm sitting at my desk, actually reflect quite a bit of light into my office. Great! 2. My wife has described these as "the most hideous piece of furniture ever conceived of by man." So it does not have spouse approval factor. Granted, she will seldom be in my office area, so that isn't the end of the world. 3. These are really hard to align in a way that doesn't look a little tacky. There are some plastic connectors but they don't do a bang up job of keeping these in place. Each panel is slightly tilted and it's... quite obvious. I may at some point make my own improvements to these to help make them more level. It's not a particularly expensive product so I wasn't expecting much so it's fine and I'm not going to ding them on the rating because of it. All said, would I buy this product again? Probably not. It's assembly was ~90 minutes which is about 75 minutes longer than I was anticipating spending on this (not including the 5 minute writeup that I'm doing here). But am I going to return it? Also no, if for no other reason I'd be just as annoyed taking it apart and putting it in the original box to return it.
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Reviewed in the United States on October 31, 2023
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Verified Purchase
Martha Jeane
Massapequa, US
★★★★★ 5
Great for using behind me on Zoom calls
Color: Black, Size: 1 Large Panel
This works great as a place to put tapestries behind me when I'm on Zoom calls... much nicer than blurring out the background. Easy to put together, large, works great.
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Reviewed in the United States on April 16, 2026
W
Verified Purchase
Waiting to see how good it is
Massapequa, US
★★★★★ 5
Good quality, very adorable solution.
Color: Black, Size: 1 Large Panel
Easy to put together and take apart. Wish it had a storage bag of some sort—that would be very helpful. Used it for our mom while she was on hospice at home. The wheels made it very easy to move around as necessary. Nice and tall and wide for privacy. Highly recommend.
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Reviewed in the United States on September 7, 2025
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Andrew Hopkins
Boise, US
★★★★★ 4
Nice, large room divider for privacy
Color: Black, Size: 1 Large Panel
Easy to assemble. Fabric screen covers the large frame very well and provides privacy by separating spaces. I would not exactly call it sturdy, but it does the job and stands freely with no problem. It’s lightweight and portable if you need to move it. Came with a screwdriver and wrench tool for assembly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026

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