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Carl Martin Classic Optical Envelope Guitar Effects Pedal

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Carl got a call from an old guitar playing friend who said he didn't want to use his wah all the time, but wanted to have some of those effects avail...Click To Read More About This Product

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An awesome pedal that offers wah effects without the wah pedal.

Carl got a call from an old guitar playing friend who said he didn't want to use his wah all the time, but wanted to have some of those effects available. Enter the Classic Optical Envelope, essentially a classic envelope filter (auto-wah utilizing the same opto-technology as the Opto-compressor) for guitar or bass, with a bunch of cool options.

The first footswitch is for fx on/off (buffered), and the second to select between the three modes (High Pass, Band Pass and Low Pass). Add to this the Level control for overall volume, Drive for how hard the auto-wah will function, Q for adjusting the size of the bandwidth, and Tone which acts as a separate Hi-pass filter, and you have complete control over your fx from vocal like tones to funky quacks and fat wows!

Housed in the cool new diecast housing with mini-knobs and cool retro color, the Classic Optical Envelope can be powered by a 9v battery, but it's always recommended to use a regulated power supply for optimum response!

  • Classic envelope filter tones with more tonal options
  • Drive, Tone and Level controls
  • Diecast housing with mini-knobs
  • Retro looks and color

Add it to your pedal board today.

  • Battery: Standard 9V Alkaline battery
  • Power consumption: max. 14 mA
  • Power supply: 9 V DC (regulated), 30 mA minimum, 2.1 mm female plug, center negative (-)
  • Input: 1M Ohm
  • Output: 330 Ohm
  • S/N Ratio: 56 dB
  • Dimensions: 4.72" (W) x 3.74" (D) x 2.2" (H)
  • Weight: 0.94lb.

Review Snapshot

by PowerReviews
Carl MartinClassic Optical Envelope Guitar Effects Pedal

(based on 2 reviews)

Ratings Distribution

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Reviewed by 2 customers

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(0 of 1 customers found this review helpful)


I would not buy this pedal again.

By none

from Manchester, Ohio

About Me Professional Musician

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Verified Buyer



    • Difficult To Use
    • Not Responsive
    • Poor Sound Quality

    Best Uses

    • Performances

    Comments about Carl Martin Classic Optical Envelope Guitar Effects Pedal:

    This pedal is not what I expected, I worked with it for hours and could not find a good setting, that I could use when giging. I have a Mad Professor Snow White Auto Wah pedal that sounds a whole lot better.


    One of the best envelope filters for sure

    By C Austin

    from Austin, TX

    See all my reviews

    Verified Buyer

    Comments about Classic Optical Envelope Guitar Effects Pedal:

    I almost bought the DOD reissue envelope filter but in the end got this one after watching youtube videos. The DOD i'm sure is a fine one, but the Carl Martin has more options and variety. The high pass, band pass, and low pass modes are very useful not to mention you can step on the selector button to change modes. I play live in a cover band that has a wide range of songs, so different types of envelope sounds from the HP, BP, LP switch is great. To my surprise, the low pass setting sounds the coolest to me, which is what bass guitarists would use. I play electric 6 string and the low pass captures the Jerry Garcia, Estimated Prophet sound very well. Great versatility and great sounds. 5 stars total, partly because of the low price/value.

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