1974 Fender Twin Reverb - How I restored this amp to tip-top condition.
1986 100 watt Seymour Duncan Convertible - Most comprehensive site on the web.
60 watt Seymour Duncan Convertible - Some general info. The only online schematic can be found at this page.
Build an Amp Stand - One idea on building an amp stand. My idea anyway.
Build A FireFly Tube Amp - A picture essay on building a 1.5 watt Class A tube amp with a great tone.
Build An Octal Fatness Tube Amp - A picture essay on building a 5-7 watt Class A tube amp with a great tone.
Build An Octal Madness Tube Amp - Build the Octal Fatness' big brother. Hosting schematic only (at this point) for David Jones, the designer of the circuit.
Build A Little Gem Practice Amp - A picture essay on building a 1/2 watt LM386 based practice amp.
Build A Line Out Box For Your Tube Amp - An easy way to get line out capability for your amp.
Calculating Output Transformer Loads - Technical paper on how changing your speaker load can affect your output transformer.
DIY Tube Coolers - How I made tube coolers for my power tubes.
DIY Speaker Cabinet - How I made a speaker cabinet for one my amps.
Gregory "Mark X" Tube Amp - Some general info on this obscure but good sounding 10 watt tube amp from the 60's and my restoration of it.
Gregory Amps Page - The only page with some general info on these obscure tube amps from the 60's.
Hot Rod DeVille - Adding a Cooling Fan and some technical info.
How To Bias Power Tubes - Information on how to properly bias cathode biased and fixed biased tube amps.
Lab Series L5 Guitar Amp - Some technical info on the secret weapon amp of Allan Holdsworth and Ty Tabor.
Marshall 9005 Power Amp - Some technical info on a cool two channel 50 watt rack mount power amp.
My Matchless Spitfire Clone - A picture essay on building a 15 watt Class AB tube amp with a great tone.
Power Tube Bias Charts - Recommended bias currents for some common power tubes at specific plate voltages and amp class.
Power Tube Plate Dissipation Calculator - MS Excel based calculator for Cathode Biased power tubes.
Replacing A Blown Filter Cap - How I went about replacing a blown filter cap and building a light bulb current limiting device.
Silver Wiring In Guitar Amps?! - My argument against such a silly idea.
Star Ground Conversion - A case study with amazing results in terms of hum reduction.
Links to Other Sites:
Aiken Amps - Aiken's site. Check out the technical section for good info on biasing, amp classes and much more.
Ampage Guitar Amp Forum - A good place to get help when repairing, modding a tube amp or tracking down a schematic.
Ampwares.com - Home of the Fender Amp Field Guide.
Antique Electronic Supply - Source for Hammond transformers, tube sockets and other stuff.
AX84.com - A cool DIY tube amp site with tube amps projects waiting to be built.
Blackface vs. Silverface - Just what are the differences? Find out here.
BlueGuitar.org - Great source for guitar amp schematics and mods.
Electron Tubes - Vacuum tube site by Dennis R. Grimwood with some very interesting information about screen grids, ultra-linear design, etc.
GEOFEX.com Tube Amp Troubleshooting - How to fix that pesky tube amp....
HoffmanAmps.com - Great place for tube amp parts with great service.
How Vacuum Tubes Work - What are all those parts inside?
Let's Talk Speakers - Answers to all your questions about speakers.
PartsExpress.com - An on-line source for speakers, tubes, handles, and lot more for building amps and speaker cabinets.
Tone-Lizard.com - A cool site with info on tube amps and how to mod virtually any amp.
TheTubeStore.com - An on-line source for NOS and new vacuum tubes.
Transformer Supply & Design Co. - Guitar amp transformer manufacturing company, owned by Bob Wood, the son of the designer of the original Matchless amp transformers.
WestLabs.com - Source for really nice 15 and 30 watt transformers, as well as other guitar amp parts.