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The Ultimate Tone Community
Forums on designing and building audio amplifiers and accessories.
Forum Threads Posts Last Post
TUT Q&A
Q&A regarding Kevin O'Connor's "The Ultimate Tone" book series
3 7 Indexing
09-12-2018, 04:43 PM
by davidespinosa
Power Scaling
Discussion of London Power's Power Scaling methodology
1 3 Power Scaling WORKS!
09-12-2018, 10:23 PM
by p4gblue
PCB Design
2 16 PCB design for guitar amp...
09-17-2018, 10:41 PM
by K O'Connor
Power Supplies
2 7 SMPS in guitar amps
09-13-2018, 12:55 PM
by guitarzan
Preamp Mods & Design
1 1 Preamp mods
08-22-2018, 04:25 PM
by K O'Connor
Sag & Sustain
1 1 What is sag?
08-22-2018, 05:07 PM
by K O'Connor
Switching
1 3 Channel switching
09-17-2018, 10:22 PM
by K O'Connor
Wiring
1 6 Wire choice
09-15-2018, 12:51 AM
by K O'Connor
Personal Projects
2 8 Repurposed Bogen CHB100
09-18-2018, 07:27 PM
by soundmasterg
Test & Measurement
Testing your project and test equipment selection
7 7 Frequency response with g...
Yesterday, 03:58 PM
by K O'Connor
New Member Introductions
You are welcome to let forum members know more about you! We're glad you are here.
1 1 Meet the builders and pla...
09-12-2018, 11:15 PM
by p4gblue

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London Power Amps & Gear
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London Power Kits & Mods
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Gear for Sale by Forum Members
2 2 FS: LP Studio stereo powe...
09-12-2018, 05:53 PM
by davidespinosa
Vendor Info
Post here if you sell parts or services of interest to audio builders/hobbyists
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Miscellaneous for Sale
Selling roosters, hammocks or shoe-horns? Post them here.
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Welcome!
Fans of Kevin O'Connor's The Ultimate Tone (TUT) book series, and other visitors with an interest in tube and hi-fi audio, are encouraged to enjoy and contribute to the discussions. Kevin O'Connor is the creator of the popular Power Scaling methodology for amplifiers.
Please remember these three principles: respect, sharing, community.
If you are not familiar with The Ultimate Tone book series, please find information in the discussion topics, or click here to visit London Power/Power Press Publishing.