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Description
maxon guitar pedals Maxon ST9Pro+ Super Tube Pro+ Overdrive Pedal – Chicago Music ExchangeBigger, Badder, Bolder these are the best three words to describe the ST 9 Pro+ Super Tube. The latest and possibly last incarnation of Maxons legendary 808, the ST 9 features more output, more gain, and more tonal options for the player who simply needs well, MORE. Starting with a circuit loosely based on the classic 808 architecture, the ST 9 adds a Mid Enhance knob to control the amount of midrange boost. This knob functions similarly to an amps
Bigger, Badder, Bolder – these are the best three words to describe the ST-9 Pro+ Super Tube. The latest and possibly last incarnation of Maxon’s legendary 808, the ST-9 features more output, more gain, and more tonal options for the player who simply needs – well, MORE.Starting with a circuit loosely based on the classic 808 architecture, the ST-9 adds a Mid Enhance knob to control the amount of midrange boost. This knob functions similarly to an amp’s presence control, boosting perceived volume and gain as it’s turned up.
You may be wondering why an 808-style pedal would need more presence – allow us to introduce you to the ST-9’s Low Boost switch.
The Low Boost switch is the ST-9’s secret weapon – This unassuming switch completely changes the character of the pedal, adding beefy low end and increased saturation via a LP filter and an alternate set of clipping diodes.
If this wasn’t enough, the ST-9 also offers 9- or 18-volt operation via an internal charge pump. Run at 9 for the classic 808 sound and feel or switch to 18 for increased headroom, improved dynamics, and a bigger, chunkier tone to the overdrive.
From bluesy overdrive to diabolical dirt box, the ST-9 is a devilishly diverse pedal that can punish a clean amp or turn a dirty amp into a wall of doom.
The OD808 re-imagined with increased output level, additional saturation and a more diverse palette of tonal options.
Updated Reissue of 1980’s Super Tube Screamer
Circuit Based on classic OD-9/OD808
Dedicated Midrange knob to dial in amount of mid boost
Low Boost Switch adds low end punch – great for single coils
9-volt or 18-volt regulated operation (switchable)
True Bypass Switching
Input Impedance: 500K Ohms
Output Impedance: 10K Ohms or less
Maximum Gain: 51dB (2.2 kHz)
Equivalent Input Noise: -115dB or less (IHF-A)
Control: MID ENHANCE, DRIVE, TONE, LEVEL
Switch:
- Bypass/Effect, Voltage Switch (9V/18V)
- MODE Switch (CLASSIC/LOW BOOST)
Indicator: Bypass/Effect LED, 9V LED, 18V LED
Internal Circuit Voltage: 9VDC / 18VDC (DC / DC Converter)
Power Consumption: 12mA/9VDC, 36mA/18VDC
Dimensions: 74 (W) x 124 (D) x 54 (H) mm
Weight: 610g (including battery, excluding AC adaptor
Power Supply: 6F22 / 6LR6 9V battery x 1 or Maxon AC adaptor
Standard Accessory: AC adaptor AC2009, user's guide
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Exchange/Return Notes
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4.1 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 4
Definitely not indestructable
Size: Medium/Large, Color: Dog Ness Monster - Large, Size: Medium/Large, Color: Dog Ness Monster - Large
I have a 1-year-old toy fox terrier (Rocky, pictured). He has been chewing on this toy for seven months now; it is one of his favorites. He has been unable to seriously damage the "ocean" portion of this toy, but as you can see from the provided image, the sea serpent has not faired that well. It is missing its snout and smaller portions of the humps. My guess is that the advertiser images showing much larger dogs with "like new" versions of the toy are just that...NEW AND UNCHEWED.
I have not had to clean up bits of this toy from my floor, so I assume Rocky has been swallowing them. My hope is that the yellow material of the serpent is not chemically dangerous when exposed to digestive fluids.
Rocky easily destroys plush toys in a matter of days if not hours and, consumed pieces of a small microfiber blanket that he liked to toss around and play tug-of-war with (past tense as he destroyed it and has since been trashed after I began finding feces-stained undigested pieces of it lying around). Since this toy has survived seven months and has remained recognizable, I have to agree it is durable.
Just beware, if my small toy fox terrier can damage the toy as pictured, expect your large breed chewer to do similar or worse damage. Also, the toy is very heavy! When Rocky drops it down a flight of stairs, it makes a MAJOR thud at the bottom, and sometimes makes me wonder if it might crack the large tile at the bottom.
I cautiously recommend the product.
Note the yellow frisbee in Rocky's picture. It is only a few months old and surprisingly has not suffered any chew damage despite substantial abuse. It appears to bend in the wind like a proverbial reed, evading damage by yielding to pressure.
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Reviewed in the United States on July 5, 2024
★★★★★ 5
Dog loves it! For tough chewers for sure
Size: Medium/Large, Color: Dog Ness Monster - Large, Size: Medium/Large, Color: Dog Ness Monster - Large
Dog absolutely loves it, he’s super rough on all of his toys they usually last about 10 minutes bore they are torn to shreds. It’s lasting through his chewing so I’m happy. It’s also super cute.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Loch Yes
Size: Medium/Large, Color: Dog Ness Monster - Large, Size: Medium/Large, Color: Dog Ness Monster - Large
Cute toy, dog really likes it. I had my doubts when I pulled it out, and honestly so did she, but the soft part bounces, so that got her going. We've had it for about a week. My dog is ~70 lbs and a moderate chewer, and this monster still gets regular play and is holding up well.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Great toys for aggressive chewers
Size: Medium/Large, Color: Turkey Day Drumstick - Large
These are great toys they last a while they are destroyed after a while but both dogs are aggressive chewers but they last about a year and a half. And they are go to toys they have one that is a shark mouth and they love it I have bought 4. (two of them the pups lost ).
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Reviewed in the United States on December 20, 2025
★★★★★ 4
Durable and Fun, Just Gets a Bit Rough
Size: Medium/Large, Color: Chopper - Large
This is a really good toy overall, especially if you have dogs that love to chew. My dogs were immediately into it—they play with it nonstop, toss it around, and stay entertained for a while, which I love. It definitely holds up better than most toys we’ve tried.
The only reason I’m giving it 4 stars instead of 5 is because over time it does start to fray a bit and gets a little rough, especially with heavy chewing. It’s not completely indestructible, but it still lasts longer than a lot of other toys.
Overall, still a great buy and I would recommend it if your dogs need something tough but fun!
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Reviewed in the United States on April 4, 2026