AMT North America: Handmade guitar pedals - made one at a time for over twenty years.
AMZFX: Effects and audio projects and schematics including a collection of vintage circuits. Features articles and a newsletter.
An Evaluation Of Effects And Pedals- Vox Wah Wah: History of the Vox Wah Wah, interesting information, interviews, how to tell if you have a Classic Wah.
Aron Nelson's Stompbox page: An archive of schematics, links, resources, and a message board for subjects related to effects and electronics.
BossArea - Compact Pedal Reference: Descriptions of the available pedals.
Carl Martin Effects: List's of products, reviews, and information on the Carl Martin Effects Pedals.
DiscoFreq's FX Site: A library of effects; includes product listings, technical details and schematics, and do-it-yourself projects.
Dr. Daktari Guitar Pedal Collection: A collector shares his collection of guitar pedals. Includes scans of manuals, and pedals for sale listing.
EarlyIbanez: Photo Gallery of Early Ibanez Large Series Guitar Effect Pedals.
Echo Machines of the 60's: Offers information about the different types of Echo Machines that were popular during the 60's.
Effectronics: Has schematics, theory, and a beginners page for those looking to build Effects Pedals.
Effectsdatabase.com: A searchable database containing information and reviews for effects, for those considering purchasing a specific model, or are trying to find the right model for their needs.
Envelope Filters: Gives detailed information on how Envelope Filters work.
Foxrox Electronics: Shows the different types of FoxRox Effect Pedals, as well as offering information and sound clips for each Pedal.
FuzzEffect: A history of the Guitar Fuzz Pedal, the Effect that changed Rock Music Forever!
G2D Guitar Pedals: Handmade guitar pedals designed for blues, country, jazz, pop, rock, and metal from New Zealand.
Grail Tone: A database of tone settings for a variety of amps and effects; also has articles, reviews and a forum about Mesa Boogie amps.
Guitar Pedals- Buying Guide: A buyers guide for those looking for information on buying the right pedal, multi effect pedals, racks, modeling, what to look for.
Guitar Wiring and Modification: Guitar wiring and modification. Photos and wiring diagrams and links to modify a Fender Stratocaster to humbucking pickups.
Guitarsite.com: Information about effect pedals, effects explained, effects loop, building your own, Tone and Effects placement.
Harshnoise.com: Information, pictures and reviews of effects and electronic equipment.
Ibanez Tube Screamers: Tons of Information about the Ibanez Tube Screamer effects pedal, mods, sound samples, reviews, and more.
Indyguitarist Effect Pedals: Learn how to modify or build your own effect pedals, one year technical support included.
Jacques Stomp Boxes: Host's a variety of Stomp Boxes and information on each of the offered products.
Keeley Effects: Modded Pedals, custom pedals, and their own pedals. Keeley Effects offers modded pedals that give a little more than the originals.
Lehle Switching: Lehle Switching Effect Pedals that have increased stability, and switches that provide excellent signals. Also has information on their Pedals and how the switches effectively increase the signal.
Loco Box: Information on the Loco Box Effects Pedals of the 70's and 80's.
MacKinnon, Alistair: Discusses digital guitar effects, pitch scaling, and software modelling. Also contains articles on software quality and business.
MJM Guitar FX: Handbuilt quality effect pedals, and information on each different pedal.
Mode Zero Catalog of Effects with Sound Files: Offers Sound Files for a large number of different Effects Pedals and makes it easier for a person to choose between the different types of Effects Pedals available.
Mu-Tron: History of the Mu-Tron Effects Pedals.
Rolf's Boss GT-5 Guitar Effects Processor: A library of patches for the Boss GT-5 Guitar Effects Processor. Includes software download and technical advice.
Runoff Groove: Features DIY (do-it-yourself) guitar effect pedals, with articles on selected effects schematics; includes sample mp3 clip.
SansAmp GT2: Unofficial page with a dictionary of settings to achieve specific effects, official and submitted by users.
SansAmp PSA-1: Unofficial page with a dictionary of settings to achieve specific effects, official and submitted by users.
Schematic Heaven: A free download site for hundreds of vintage guitar & bass effects schematics. Keep your vintage gear alive and playing.
Smallbox Effects: Graphical layouts and schematics for popular effects aimed at the beginning builder of guitar effects.
Tel-Ray: Dedicated to vintage oilcan echo and vibrato effects. Includes photos, schematics and a forum.
the BIG MUFF and GUITAR EFFECTS Museum: the BIG MUFF and GUITAR EFFECTS Museum. Electro-Harmonix, Sovtek, Modern & vintage . Guitar effects Pictures, Links, Blog...
The Guitar Effects Oriented Web Page: Information on effects, DIY projects, technical aspects, and tube amps.
The Korg A-Series Page: Information, resources, and discussion regarding the Korg A3, A2, and A1 effects processors.
The Korg AX1G Patch Page: A library of patches (settings) for the KORG AX1G Guitar Multi-Effects Processor.
The Mouthesizer: Very interesting audio effects device. Uses computer vision to link facial movement and guitar effects. Includes a brief video clip and technical papers.
The Talkbox FAQ: The "talking guitar effect". Includes commercial models, historical data, discography of recorded examples, and plans to build your own.
The TC Electronic G-Force Page: Unofficial site about the TC Electronic G-Force guitar effects processor. Includes information about setup, blocks, programming and tips.
Tone Settings: A database of amplifier settings to create a range of sounds.
Tonefrenzy: Effects information, many sound samples with reviews also for guitars and discussion board.
Yamaha Magic Stomp: Official site for their effects processor with download section for new patches.
Zoom 505 Central: Unofficial resource; includes a library of patches, details of factory defaults, manual, and instructions on building an expression pedal.
Zoom BFX-708 Patch Database: On-line database of patches for the Zoom BFX-708 bass guitar multi-effect unit.
Zoom GFX-707 Patches: Database of patches and information about the GFX-707 multi-effects unit; includes a discussion forum.