SKU: 94067949063
pedal overdrive

pedal overdrive TWA RZ-01 CHEMICAL Z Purple Gloss 2024

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Description

pedal overdrive TWA RZ-01 CHEMICAL Z Purple Gloss 2024Order nowLimited quantities available. Please allow up to 7 business days for us to hand assemble and test your pedal with care. Once your RZ 01 ships, you'll receive your tracking information. * Hear it used by on the new MEGADETH album! * RZ 01 CHEMICAL Z Dual Channel Overdrive Signature overdrive pedal inspired by Maxon OD808, OD808X, and APEX808 circuits. Designed by Tube Screamer creator Susumu Tamura. Features "Magic" IC used in APEX808 and

Order now—Limited quantities available. 

Please allow up to 7 business days for us to hand assemble and test your pedal with care.
Once your RZ-01 ships, you'll receive your tracking information.

* Hear it used by on the new MEGADETH album! *

RZ-01 CHEMICAL Z
Dual Channel Overdrive

  • Signature overdrive pedal inspired by Maxon OD808, OD808X, and APEX808 circuits.
  • Designed by Tube Screamer creator Susumu Tamura.
  • Features "MagicIC used in APEX808 and Tamura-Mod Tube Screamer mods.
  • Less compression & more even frequency response than a standard 808.
  • Increased output level.
  • Two footswitch-selectable clipping modes
  • NORMAL MODE—for standard 808-style overdrive.
  • HOT MODE—engages alternate diode pair for increased gain, output, and different EQ curve.
  • 9V battery or external power options.
  • Buffered Mechanical Bypass switching.
  • Made in USA.


"A new overdrive based on the mild, natural drive sound of the legendary TS808, with even harmonics added at lower volume levels than the symmetrical clipping diodes would activate, producing rich integer harmonics.

Equipped with a HOT/NORMAL mode foot switch, both modes have excellent high-mid performance, a transparent, comfortable, and well-defined sound.  HOT mode is a higher gain, sparkling, easy-to-listen distortion for playing solos."

-TS Originator Susumu Tamura / June 7, 2024


Roy Z
is a household name in the Metal community.  His extensive resume boasts the privileged position as guitarist, collaborator and producer for the solo sojourns of not one, but two of Metal’s most iconic frontmen – Rob Halford of Judas Priest and Bruce Dickinson of Iron Maiden.

In addition to his work with these vocal titans, Roy has produced over fifty albums for a variety of artists in the hard rock and metal genres.

Most recently, Roy has teamed up once again with Bruce Dickinson on his first solo album in nearly 20 years—The Mandrake Project.

The Chemical Z overdrive was designed to replace Roy’s multi-drive setup with a single pedal that would not just meet all his dirtbox desires, but exceed them.

Designed by Tube Screamer creator Susumu Tamura, the CHEM-Z circuit is based around the “Magic” IC that was only found in limited runs of the best-sounding vintage TS808’s. This IC was also used in the APEX808 that Godlyke released in 2020 under the Maxon Custom Shop banner.

This special OpAmp offers less compression and more output than the typically-used JRC4558. In addition, it produces both even and odd-order harmonics in a similar manner to the preamp & power sections of a tube amp.

More than just a copy of previous designs, Chemical-Z has been optimized for use with high-gain amps. Rich in integer harmonics and with a precisely-tuned upper midrange, CHEM-Z is aggressive yet articulate; edgy yet easy on the ears.

This crunchy clarity not only breathes new life into tube amps, but is also the perfect “plug-in” for adding depth and dimensionality to digital modeling units (Roy uses CHEM- Z to warm up the sound of his Quad Cortex).

Chemical-Z also features a footswitchable hot channel that activates an alternate set of clipping diodes. These now-defunct Panasonic DA2S00100L diodes were used in the Maxon OD808X Overdrive Extreme and have more forward voltage than standard diodes, functioning in a similar manner to the red LED’s that other builders (Keeley, Earthquaker Devices, Fortin, Catalinbread) use in their OD circuits. The result is more gain and output level, but also a noticeable bump to the low-midrange that helps thicken things up for soloing.

This dual-channel design also allows CHEM-Z to be used with clean and semi-clean amps, creating a 3-channel, “clean-crunch-crush” monster rig with just a single pedal.

As with all TWA models, only the highest quality components go into the production of Chemical-Z, including ALPHA potentiometers, Marushin & Neutrik jacks, KOA/Speer resistors and WIMA, Nichicon, Kemet, & Vishay capacitors. CHEM-Z is hand-assembled in the USA using our very own nimble little fingers.

We are once again extremely honored to work with two luminaries in their fields to bring you a pedal that is at the apex of its class. Our heartfelt thanks go out to Roy Z and Tamura-san for partnering with us on this project.

We proudly present to you the Chemical-Z!

 

CHEMICAL-Z SPECIFICATIONS*
Input Impedance: 500k ohms
Output Impedance: 10k ohms or less
Maximum Gain: HOT 27dB @ 2 kHz, NORMAL 23Db @ 2 kHz
Equivalent Input Noise: HOT Typical 106dB / A-wt., NORMAL Typical 104dB / A-wt. Controls: DRIVE / TONE / LEVEL
Switch: True-Bypass switching BYPASS / ENGAGE, MODE HOT / NORMAL 
Power Supply: 9V battery or external power supply 9VDC
Battery life: Approximately 70 hours on a standard manganese battery (Panasonic
6F22) at 25°C / 77°F
Power Consumption: Min. 5 mA at 9VDC (The current consumption will vary depending on the number LED’s in use at any given time).
Dimensions: 120 mm (4.69”)L x 93 mm (3.66”)W x 51mm (2.01”)H
Weight: 369 g (13 Oz) without battery.
Options: POWER-ALL® ECO-DAPTER® - Single Power Supply
*Please note, like all TWA Pedals, the Chemical Z™ will be manufactured in a limited batch of 100.  Unfortunately we are unable to predict exactly when/if a next batch will be manufactured, however if these sell out quickly, we will definitely be making more next year!
*Specifications are subject to change without notice.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 94067949063

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DogO is my nameO
Carnegie, US
★★★★★ 4
Chihuahua and Border Collie Approved
Flavor Name: Braided Stick (Chicken)
We got the iPaw Turkey Tendon Braided Sticks for our two senior pooches, and it’s safe to say they are an absolute hit in our household. Both of our dogs seem to genuinely love the flavor and the "chew" of these. They stayed engaged with the treat until the very last bit was gone. While they are hard, they aren't rock-hard. I was easily able to cut them up with scissors for our Chihuahua, who is missing several teeth. He was able to gum them down without any issues, which is a win for a pup with dental challenges. The only reason I’m giving these 4 stars instead of 5 is the price. They are definitely on the expensive side for the amount you get. Since my dogs go through them so quickly, it’s hard to justify keeping these as a "constant" staple in the pantry, but they make for an excellent occasional high-value treat.
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Reviewed in the United States on March 10, 2026
N
Nightowl
Boise, US
★★★★★ 5
Dogs loved them, but gone very quickly
Flavor Name: Braided Stick (Chicken)
I picked up these turkey tendon braided sticks as a chew treat for my dogs, and they had zero hesitation. Both dogs were immediately interested and happily worked through them without any convincing. They seem very tasty and easy for dogs to chew, which makes them a nice occasional reward. They seem to be of healthy, quality ingredients, which is always a plus. Similar to some other natural chews I’ve tried, they just don’t last very long with bigger or enthusiastic chewers. What looks like it might be a longer distraction turns into a fairly quick snack in our house. Still, the dogs enjoyed them and tolerated them well, so they work fine as a treat, just not a long lasting chew for large dogs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
M
Michael O'Neal-Petterson
Massapequa, US
★★★★★ 3
Expensive for What You Get
Flavor Name: Braided Stick (Chicken), Flavor Name: Braided Stick (Chicken)
My dogs love chews and I like to try different kinds. I thought they would be longer lasting since they are braided and turkey tendon. These come in a small bag with just a few chews. The chews aren't very big either. They are chewy but not so much that they take a while to eat. I gave one to my 36 lb labradoodle and he finished it in a couple minutes - so it isn't a long-lasting treat at all. At this price point, I would expect more treats or something that lasts a while. My dog loved these but I expect more bang for my buck.
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Reviewed in the United States on December 31, 2025
S
Seri Lynn
Battle Creek, US
★★★★★ 4
Great braided dog snacks, good ingredients - cost a bit much for the number you get
Flavor Name: Braided Stick (Chicken)
I ordered these Chicken flavored Turkey Tendon Braided Sticks for my three medium sized dogs. I had hoped these would last a little while so gave them one each (there was only like 6 in the pack), but they gobbled them down before I even realized it. They really loved them. I would love to get them these as a special treat every now and again, but they're just too expensive no longer than they last. I know that they're quality treats, made with good ingredients and that really matters, still for no more than you're getting I feel they should cost about a third less. At this rate they're about $3 a piece, and I could get more of some other treat for that price. But if you don't care about the pricing and want only the best for you dogs, then this would be a perfect choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
K
Karie Watterson
Alexandria, US
★★★★★ 5
Dog chew treat
Flavor Name: Braided Stick (Chicken), Flavor Name: Braided Stick (Chicken)
​I recently purchased these Turkey Tendon Braided Sticks for my dog, and they have been a huge hit. Here are a few reasons why we both liked them: ​High Engagement: My dog was immediately interested and stayed busy with the chew. ​Healthy Ingredients: I appreciate that they are a Turkey Tendon Recipe, which feels like a much healthier alternative to some other chews on the market. ​Quality Design: The braided texture seems to help with the chewing experience and likely helps keep teeth clean. ​I will definitely be buying these again. If you're looking for a treat that is both enticing and made from good ingredients, I highly recommend giving these a try!
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Reviewed in the United States on January 3, 2026

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