ISP Technologies Decimator II Noise Reduction Pedal

Guitar Noise Reduction Pedal with Direct Instrument Tracking and Linearized Time Vector Processing
ISP Technologies Decimator II Noise Reduction Pedal image 1
ISP Technologies Decimator II Noise Reduction Pedal image 1
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ISP Technologies Decimator II Noise Reduction Pedal
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Decimator Ups the Ante

ISP's Decimator II guitar pedal ups the ante over the original Decimator design to give you even better noise reduction. An 1/8 phone cord lets two pedals directly track your axe, delivering amazing tracking performance. You can use one block of Decimator between your guitar and amp and a second in your effects loop. Decimator II sports linearized Time Vector Processing in its expander tracking, giving you incredibly smooth sustained-note decay that's virtually free of release rippling. For the ultimate in electric guitar noise reduction, put an ISP Decimator II in your signal chain.

ISP Decimator Noise Reduction Pedal Features at a Glance:
  • 2 new pending patents covering innovative improvements over the original Decimator
  • 1/8 phone cord allows 2 pedals to directly track your axe
  • Offers the same tracking performance of ISP's professional ProRack G system
  • Use 1 block of Decimator between your guitar and amp and a second in your effects loop
  • Linearized Time Vector Processing improves release-response smoothness and transparency
  • Virtually eliminates release ripple for buttery-smooth note decay
The ultimate in guitar noise reduction is the ISP Decimator II!

Additional Media

Decimator II Noise Reduction Pedal User Manual

Tech Specs

Pedal Type Guitar Noise Reduction
Inputs 1 x Instrument
Outputs 1 x 1/4"
Batteries 1 x 9V
Power Supply Included No
Manufacturer Part Number DecimatorII

Customer Reviews

Based on 27 reviews
Write your review


I love this product. When I'm working within the pedalboard, I always place one of these pedals at the end of a signal before going into an amp & even "in the box". This way, I can sculpt my sounds with pedals always knowing that the output signal will be "noise free". Also, placing this pedal at the end of any signal allows me to not worry when considering Distortion or Overdrive Pedals that will cause a lot of noise within the signal chain. I own 3 of these because of the way I setup my pedalboard. If I did't have this pedal, I wouldn't have a "clear signal" and my personal sculpted sounds.

Just buy one already!

It's a noise gate. You need one. But really, this noise gate should be simulated by every digital guitar processor and amp simulator out there! It's easy to use, doesn't fail, and cuts clean! What more could you need? Works great live! I've found myself wishing for a simulated plugin of this gate to use in Protools (instead of bussing tracks out). Just make sure that if you're running it with batteries instead of a power supply, you'll need to unplug any cables after each use, otherwise you'll be going through batteries like they're going out of style!
Music background: 16 years playing exp, production, engineering, touring/recording artist

It's Majic

I don't know what it does or how it does it, but this pedal really cleans up the signal. It makes all of my guitars sound awesome. I wouldn't say it's completely transparent, but It cleans up your signal in a good way. Single notes pop off the fretboard. It gets rid of the muddiness. It's much improved over the first generation decimator. I even convinced my band mate by A/Bing it against the first generation pedal. He put his old decimator on eBay and ordered the decimator II right then. You should give it a try.
Music background: Musician

This could silence an earthquake!

I have tested the Boss and MXR noise gates/clamps and this pedal did an amazing job of cutting out unwanted noise without touching the sound. I ran 5 different OD/distortion pedals through this bad boy at the same time - the Decimator 2 could be adjusted to cancel out every bit of the hiss, buzz, and squeals (of course you would never run this much gain, I wanted to see how far I could push this pedal). With significant gain, you can set the threshold relatively low and cut out the noise, but keep the great sound without any clipping. I do a lot of home recording as well as club playing and wanted a way to cut out hiss for recordings, as well as feedback when I crank my JCM 800 for shows. This pedal works great in both settings. Word of advice - when you are using heavy gain and have the threshold setting a little higher, but then you back the gain down, you may want to adjust the threshold to compensate the lower gain. In other worlds, if you have your threshold set too high (too high for the amount of gain you are using), you will notice the performance of your sound drop a bit. A simple fix, just drop the threshold down a bit. Finding that perfect setting is very simple. This pedal is the way to go.
Music background: Guitar for 30 years, amateur recording

Buzz Noise Be Gone!

I have a Marshall JVM410H that's an awesome amp. The downside to playing through it is the hi gain buzz. After placing the Decimator II in my signal chain, I no longer deal with the hi gain buzz. What a relief! If you're thinking of getting a noise eliminator, this is THE pedal you need.
Music background: P&W Musician
See also: EQ Pedals, ISP Technologies, ISP Technologies Compressors and EQ