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Pigtronix Philosopher's Rock Compressor / Sustain / Distortion Pedal Reviews

4.5 stars based on 9 customer reviews

Sweetwater Advice

  • Matt Duncan

    The Pigtronix Philosopher's Rock is a "must have" for my pedal board. I use it first-in-line as a solid sustain and tone platform for my sound. It has a huge range of compression that goes from funk to country; and can sustain all day without killing tone. If I'm really feeling rude, I flick on the grit switch and push my signal chain into high gear. It has a sweet, yet smooth grit that pushes the front end of a tube amp into high-gear.

  • from Los Angeles, CA USA June 6, 2014Music Background:
    Intermediate Guitarist

    igtronix Philosopher's Rock

    Sounds great, adds some nice compression magic to the gear I work with. I decided that every guitarist should have a little compressor in their chain after getting this. The Volume pedal does exactly what it says. The sustain pedal changes the compression "oomph". Different ears, guitars and amps will different different magic spots for that control. The grit switch is something else completely. It adds a relentless amount of dirt, turns the pedal into a beast. It's really fun, though it might be a little less useful if you're in a softer band. My bassist gave me a positive comment and liked the change he noticed after I went to my pedal for a second before a solo.

  • from new york February 1, 2013Music Background:


    NICE SURPRISE, This is a great little pedal, powerful sustain...clean drive......You must plug this in does not run on batteries..this makes to much noise..I have to buy a noise gate....

  • from Hawley MA July 31, 2012Music Background:
    50 years of Rock now 5 years of Country


    I've only tried for a couple of hours through a really small fender practice amd and a Marshall. Unbelievable sounds at any volume, almost too easy to use. I know I'm gonna love this thing more as I go long. Thanks for the reference. Robert...You rock

  • from charlottesville, VA January 26, 2015Music Background:
    Pro Musician, Student


    Within hours of unboxing this pedal I wrote a new piece, based solely on the Grit and maxed out sustain. I was looking for something to add just a tough of honey, and wound up with a whole hive.

  • from Petaluma, California September 14, 2012Music Background:

    Pigtronicx Philosophers Rock

    Great Pedal! Sustain and mild overdrive all in one. I use small amps like Princeton Reverb on "7". This pedal gives me just the right amount of extra "UMPF". It has replaced my Ibanez TSP because of the better sustain. Great with single coils. Used for blues with a telecaster. I wish you could use a battery thhough.

  • from Union, SC USA January 15, 2013Music Background:

    Philosopher's Rock

    If you are looking for a great boost/compression/sustain pedal this is it. It is analog with a true bypass and will retain every bit of your pick attack and hold it as long as you want. The Germainium distortion is an added bonus if you like this style of distortion.

  • from Los Angeles CA USA December 17, 2012Music Background:
    Pro Musician

    The ROCK is a well built two-trick pony

    The Philosopher's Rock is a very quiet optical compressor that helps your guitar sing without squishing your tone. It offers quiet operation and "no pop" switching. It's second trick is it's "Grit" switch, which turns it into a fuzz box as well. It has a nice smooth, slightly spitty full sounding Germanium fuzz that's tonally similar to my Fulltone "69 Germanium fuzz. It works well in front of an amp that is already breaking up at least a little bit. Definitely worth the money and now I can push my amps into infinite sustain land even at living room volumes. Bravo Pigtronix. -hp

  • from Horseheads, NY August 29, 2012Music Background:
    Play at church functions and worship in church

    Enjoying the Philosopher's Rock....

    Very nice for sustain.....would like drums to go with it....

  • from SoCal September 1, 2014Music Background:
    Giggin guitar player

    Neat but Noisy

    I tried this with a Les Paul Custom through a 60w Peavey 6505 combo. My first observation was that I needed to put the volume at about the 3 o'clock position until the volume with the pedal engaged was equal or slightly higher than when not engaged. If you're anything like me, you don't want a sustainer to only use some of the sustain - you want ALL of the sustain you can get! The issue here, is if you turn the sustain up more than the high noon - 1 o'clock position, you'll get a substantial amount of noise. The sustain is definitely noticeable on all amp settings from clean to crunch to high gain although, the LP, straight into the 6505 high gain channel already has impressive sustain and harmonic feedback by themselves. This pedal also fills out the sound some on all settings. I did not bother spending much time with the GRIT switch engaged on the high gain channel. However, this pedal really shines on the clean channel and with the clean channel's crunch engaged. I believe this is where I'll get the most bang for my buck. I got some pretty nice tones on clean and crunch, both with the GRIT switch on and off and the lack-luster clean channel of the 6505 came alive and filled out nicely. Ultimately, the jury is still out on whether or not this was worth the cost and the effort. I'm also not wanting to introduce any "tap dancing" in switching channels and engaging and disengaging the pedal.

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