ISP Technologies
Decimator II Noise Reduction
Best noise reduction for guitarists seeking transparent, studio-quality signal clarity.
The ISP Decimator II Noise Reduction Pedal is the second generation of ISP Technologies' acclaimed noise reduction system, featuring unique innovations covered under two new patents pending. This pedal offers significantly improved performance, particularly in expander tracking, thanks to the new Linearized Time Vector Processing™. This technology provides a more linear release time-constant response for the downward expander's exponential curve, resulting in incredibly smooth decay of notes and virtually eliminating release ripple. The Decimator II also includes LINK IN and LINK OUT connections (using a 1/8 inch phone cord) allowing two pedals to be linked so their noise reduction circuits track the direct instrument input. This linking capability opens up several routing options, such as achieving performance similar to the professional Decimator ProRack G by placing one pedal before the amp input and another in the effects loop, or implementing true stereo noise reduction systems. It's designed to give guitarists transparent and smooth noise reduction for their setups.
$146.72
Owner Satisfaction
4.9
/ 5
Category Rank
1
/ 81
Best Noise Gates & Compressors
Price vs Category Average
-88%
Below average
Input Impedance
500
/ K ohms
Who it's for
- Metal guitarists needing clean high-gain tones
- Performers seeking seamless, natural note sustain
- Gigging musicians wanting fast, simple pedalboard setup
Who should skip it
- Advanced users requiring complex four-cable method integration
- Extreme high-gain players needing multi-stage noise suppression
- Budget-conscious players looking for affordable utility
Performance breakdown
Tracking Accuracy
Linearized Time Vector Processing ensures flawless note decay and response.
Transparency
Maintains your natural tone without coloring the signal or clipping sustain.
Release Smoothness
Virtually eliminates release ripple for a seamless, natural-sounding silence.
Routing Versatility
Link functionality allows for sophisticated dual-pedal or stereo noise suppression.
Ease of Calibration
Simple interface makes dialing in the perfect threshold quick and intuitive.
Build Integrity
Rugged construction designed to withstand the rigors of constant touring.
Key Specs
Input Impedance
500K ohms
Maximum Input Level
+12dbu
Effective Noise Reduction
greater than 60db
Dynamic Range
greater than 100db
Total Harmonic Distortion
.05% typical
Power consumption
35mA @9VDC
Release response
Program dependant based on Time Vector Processing
Features
- Second generation noise reduction technology
- Improved expander tracking with Linearized Time Vector Processing™
- Most transparent release response available, virtually eliminating release ripple
- LINK IN and LINK OUT for linking two pedals via 1/8 inch cord
- Allows for dual placement (pre-amp and effects loop) or true stereo noise reduction when linked
What customers say
The ISP Technologies Decimator II is highly praised for its unparalleled effectiveness in eliminating hum and hiss, especially with high-gain setups. Users consistently emphasize its remarkable transparency; the pedal cleans up noise without compromising tone, dynamics, or sustain. This ability to deliver pristine silence while preserving the instrument's core sound is a major highlight. Furthermore, its intuitive single knob allows for quick, effective noise suppression that integrates seamlessly, avoiding unnatural note chopping. Reviewers confirm its robust construction ensures reliability for both gigging and studio use. While priced higher, customers agree the superior performance makes the Decimator II a worthwhile investment and an essential, dependable tool.
Know before you buy
The Decimator II features updated Linearized Time Vector Processing, which improves how the pedal tracks your playing. This results in a smoother note decay and eliminates the 'ripple' effect sometimes heard in older noise gates.
Yes. You can link two Decimator II pedals together using a 1/8-inch patch cable. This allows you to place one unit in front of your amp and another in the effects loop, providing comprehensive noise reduction for your entire signal chain.
The Decimator II is designed to be highly transparent. Because of its improved expander tracking, it can distinguish between your actual notes and background noise, allowing your sustain to decay naturally without being abruptly cut off.
Absolutely. By using the LINK IN and LINK OUT jacks, you can synchronize two Decimator II pedals to function as a true stereo noise reduction system, ensuring both channels track your input signal identically.
Once you find the 'sweet spot' for your specific guitar and amp setup, you generally won't need to adjust it. The pedal is designed to track your playing dynamics automatically, so it stays effective even if you switch between clean and high-gain channels.
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$147