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BOSS NS-2 Noise Suppressor Best Guitar Effects Pedal with Unique Noise Detection Circuit, Threshold and Decay Knobs


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The NS-2 Noise Suppressor eliminates unwanted noise and hum without altering an instrument's natural tone. It's the perfect pedal to quiet down any pedalboard or effects setup.

- Compact noise suppression pedal for eliminating noise and hum in guitar and bass effects and amplifier setups
- Unique noise detection circuit preserves the natural attack and envelope of an instrument's sound
- Threshold and Decay knobs allow for shaping the elimination/suppression as desired



1. Does the BOSS NS-2 work with single coil feedback through a tube amp?

  • Yes. The BOSS NS-2 will help in reducing the noise of the signal. However, reducing too much noise can affect the sustain and volume.

2. Can I use the BOSS NS-2 with a fuzz box? If yes, how?

  • Yes. You should connect the fuzz box to the send/return loop of the BOSS NS-2.

3. Does the BOSS NS-2 reduce feedback?

  • Yes. The BOSS NS-2 works well in reducing noise and feedback.

4. Can I use a power adapter for the BOSS NS-2?

  • Yes.

5. What is the difference between the input/output and the send/return on the BOSS NS-2?

  • On the BOSS NS-2, the input is where you plug your guitar while the output is for the signal going out of the NS-2 to the amp. The send/return is where you connect the other pedals going through the loop.

6. Can I use the BOSS NS-2 for the Fender Mustang Bass?

  • Yes.

7. Can I use the BOSS NS-2 with an electric keyboard?

  • Yes.

8. Can I use the BOSS NS-2 to reduce the noise of a “wah” pedal?

  • Yes.

9. Can I connect the BOSS NS-2 to two amps to get a stereo setup?

  • Yes, you have to connect it to a splitter first.

10. Will the BOSS NS-2 work with distortion effects?

  • Yes.

11. Is the BOSS NS-2 compatible with bass?

  • Yes.

12. Does the BOSS NS-2 affect the tone?

  • No. The BOSS NS-2 makes the sound clearer by reducing the noise.


  • Nominal Input Level: -20 dBu
  • Input Impedance: 1 M ohm
  • Nominal Output Level: -20 dBu
  • Output Impedance: 1 k ohm
  • Recommended Load Impedance: 10 k ohms or greater
  • Bypass: Buffered bypass
  • Controls: MODE selector switch, DECAY knob, THRESHOLD knob, Pedal switch
  • Indicator: CHECK/MUTE indicator (Used for indication of check battery), REDUCTION indicator
  • Connectors: INPUT jack: 1/4-inch phone type, OUTPUT jack: 1/4-inch phone type, SEND jack: 1/4-inch phone type, RETURN jack: 1/4-inch phone type, DC IN jack, 9V DC OUT jack
  • Power Supply: Carbon-zinc battery (9 V, 6F22) or Alkaline battery (9 V, 6LR61), AC adaptor (PSA series: sold separately)
  • Current Draw: 25 mA
  • Expected battery life under continuous use: Carbon: Approx. 11 hours, Alkaline: Approx. 24.5 hours *These figures will vary depending on the actual conditions of use.
  • Accessories: Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information"), Carbon-zinc battery (9 V, 6F22)
  • Options (sold separately): AC adaptor: PSA series, Parallel DC Cord: PCS-20A

Size & Weight

  • Width: 73 mm, 2-7/8 inches
  • Depth: 129 mm, 5-1/8 inches
  • Height: 59 mm, 2-3/8 inches
  • Weight (including battery): 415 g, 15 oz

* 0 dBu = 0.775 Vrms
* The specifications are subject to change without notice.

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