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Item # 108866575 | Customer Ratings: Ratings ( 4 Based on 10 reviews)

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Mad Professor 1 Guitar Effects Pedal
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      Mad Professor 1 Guitar Effects Pedal (108866575)
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Was $149.99
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      Mad Professor 1 Guitar Effects Pedal (108866575)
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Was $131.99

A brand new pedal that combines great distortion and reverb for that sought-after sound.

The new “1” pedal from Mad Professor combines distortion and reverb to provide the sought-after "brown sound" of the late '70s and early '80s. With intense drive, high definition and a built-in reverb to add ambience and depth, this truly is the one to deliver one of the most legendary guitar tones to ever come out of an amplifier. Controls for Reverb, Brown, Level and Presence let you shape the 1’s sound to fit your style perfectly.


“1”’s gain ranges from medium to very heavy distortion. The amount can be easily controlled via the volume control of your guitar (input impedance is set to facilitate this, and is somewhat negated if a buffer or buffered effect is used ahead of “1”). The Brown knob controls the amount and harmonic overtones of the distortion. Getting the exact tonal quality is the key to this legendary sound and “1”’s Brown and Presence controls help it appropriately interface with a wide variety of pickups and amplifiers. “1” has a build in Reverb circuit with a Level control for setting the ambience. The sound is modeled after the studio reverb found on classic recordings from the 70’s. The decay time is preset so as not to mess the rhythm of your playing. The preset decay time and tone can be modified with trimmers inside the pedal.


The controls are:
· VOLUME: Sets the output level of pedal.
· BROWN:: Controls the distortion and the sizzling highs.
· PRESENCE: Adjusts frequencies similar to the Presence control on an amplifier.
· REVERB: Sets the “wet” level of the Reverb
Internal trimmers:
· REVERB DECAY: Adjusts the length of the Reverb decay time.
· REVERB TONE: Brightens or darkens the Reverb decay.

Mad Professor 1 Guitar Effects Pedal Features:

  • Delivers the sought-after "brown sound" of the late '70s




Product Reviews
(Based on 10 reviews)
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Viewing Reviews 1 - 3 of 10 |
  • Spotty Quality

    As reviewed by Frank Grau on 6/15/2013

    After seeing the reviews on YouTube, I bought this pedal the next day...and then returned it within an hour. The Good: The reverb on this is wonderful and perfectly balanced. It also produced the strong mids for which EVH is known. The Bad: The pedal had an oscillating compression effect (like a phaser, sort of), which I didn't want, and which I could not eliminate or control. I don't know if the phaser effect was built in to replicate Eddie's use of the MXR 90, or if it was some strange anomaly unique to being paired with my amp. The thing is, I used it with a clean-sounding amp. And this amp is touted as working best with a clean-sounding amp, so I would have though my amp would be a perfect match. Whether the phasing/compression effect was intentional or not, I hated it. Had I been able to get rid of that effect, I would have kept the pedal. My advice would be to test this with your equipment before buying. Finally, I've read other reviews where others had technical issues with this pedal, so I'm wondering if the quality-control on production of these is just not up to par with Mad Professor's other products.

    3 of 3 people found this review helpful.
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  • Well Deserved 5 Stars !

    As reviewed by Ty Schultz _ on 4/24/2013

    Tip of the hat,After 26 hours of testing Clocked with a Computer timer program. First of all I would like to report I have had zero problems. Ok, to my test results:Tone,Tone Woohoo Tone, This "1" Pedal delivers just like the demo video's I've seen. With almost all pedals I have used over my many years you have to go just past the 1/4 mark to get that next level of effect out of any pedal with the "1" I have found it's just pass the 1/8 mark which in turn gives you 2x's the control over your options in this one pedal through the reverb in there with this type control over the reverb is a + with the reverb it goes from nice & warm to WTH Wild Way Way to much for my wants or needs but it nice to know its there if I ever need it , Level is Level enough said there.The Brown on this pedal makes me smile you can get some Hell Yea Screaming going on with crisp AH with the same 1/8 turn of the knob ,I'm thinking of keeping it just under 1/2 to keep the warmth side out front,Presence is presence with the distortion side of this pedal you will need to play around with your rig to to balance your pedal to your rig a no brain'er I know my point is it's easy to get your sound dialed in fast. All testing was done on a 6505+ Peavey HS (at the practice hall) also a Peavey 30 watt Vypyr Head,set on 6505 amp setting through a 4x12 Peavey Cab (at home)3 different Solid body guitars,made from 3 different woods (Yes one was basswood,Yuck not a fan of bass) I havent had ANY problems with this pedal working with other pedals or effects on both rigs & it has open up room on my pedal board & will stay there for playing out. Downside I need to buy another one for my home rig (lol no joke)& playing old cover I havent played in years but having a blast doing it :) I hope this helps someone out & Happy Playing E1

    3 of 3 people found this review helpful.
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  • brown in a box

    As reviewed by tim palmer on 4/22/2013

    my feelings are mixed on this one....played it in store and really liked this pedal.been searching for a pedal that didnt sound like a pedal for some time and this pedal was it.got it home, plugged it in and it just wasnt the same as in the store. about 15 minutes of playing and the pedal went to crap..sounded like the battery died or something but it was a problem with the pedal...took it back, exchanged it for another. plugged in at home and it sounded much better than the first...rockin out for about a half hour and sure enough...started breaking up like the first one did..dont know if it is our area just got a bad shipment of pedals or if theres a flaw in the design but took it back...i like this pedal so much i ordered a third off line in hopes i can get a good one....it sounded that good. didnt get it yet but hope all is well with it. with all that said lets talk about the pedal. i was looking for a distortion pedal so i could care less about the reverb in it but its a really good sounding reverb. distortion side sounds unbelievable but its basically on and off... the brown knob and tone knob dont really do much to the sound...basically an on or off with this pedal but it response to the volume on the guitar and your pick hand attack like no other pedal...try it...i think youll like it...just hope i dont have problems once i get the new one in the mail...

    3 of 3 people found this review helpful.
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Questions about the 1 Guitar Effects Pedal (108866575)


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