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 Tube PreAmp Bare PCB - Upgraded Design from Marantz 7 US $16.00 
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 LOMO KINAP YP-25 / UP-25 tube preamplifier / microphone amp US $99.99
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 NOS Dynaco PAS 3X Unbuilt Kit PAS3 tube preamp US $699.00
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 BOOKS TUBE AMP PREAMP ELECTRONICS COLLECTION ON CD US $14.95
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 PREAMP AND AMPLIFIER TUBE ELECTRONICS BOOK LOT ON CD ROM US $14.95
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 BUILD YOU OWN TUBE PREAMP ELECTRONICS BOOK LOT ON CD US $14.95
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 TUBE PHONO PREAMP ELECTRONICS BOOK LOT ON CD US $14.95
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 BOOKS TUBE PHONO PREAMP ELECTRONICS COLLECTION ON CD US $14.95
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 TUBE PREAMP & AMPLIFIER ELECTRONICS BOOK LOT ON CD ROM US $14.95
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 12AT7 NOS Made In England Vacuum Tube, Brimar. Premium ECC81 Preamp Valve. NEW US $11.45
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 Dynaco (Dynakit) Pam-1 Mono Tube Preamplifier-A Beauty !! US $125.00
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 30K 150K QUAD TUBE PRE AMP RECEIVER 2 4 CH VOLUME POT US $14.99
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 RFT ECC83 (12AX7) preamp tube. USED. GOOD. US $14.90
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 FISHER 510-ST STEREO TUBE PREAMPLIFIER & 6BQ5 EL84 MONO AMP VINTAGE & CLEAN US $225.00
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 Tesla ECC83 (12AX7) preamp tube. NOS? US $21.90
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 New Aluminum Vacuum tube shield for preamp tubes valve US $1.75
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 New - Brown 9 pin vacuum tube socket for preamp valves US $1.95
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 ELL 80 TUBE AMPLIFIER S.E. STEREO + TUNER PREAMP NORDMENDE 1960'S ERA GERMANY US $391.49
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 NOS Western electric tube preamplifier 147B US $199.99
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 Peaco interstage input transformer for high-end DIY tube preamplifier project*** US $50.00
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 Four (X4) Japan-made Raytheon ( Hitachi) 12AU7A ecc82 12AU7 preamp driver tube** US $25.00
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 Dynaco PAS-2 Stereo Tube Preamp_NR US $168.50
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 TUBE AMP/PREAMP DAMPERS FOR 12AX7/12AU7/12AT7/ECC83/EL84/6922/EL84/5751/5687 US $8.99
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 BOOK COLLECTION TUBE PHONO PREAMP ELECTRONICS ON CD US $14.95
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 Vintage HYTRON 12AX7 Tall Black Plate Preamp Tube US $11.50
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 PREAMP TUBE SHIELD HOLDER COVER 12AX7 12AT7 12AU7 US $1.00
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 MOTOROLA SK52 W TUNER TUBE PREAMP HS 823D 9AA60 STEREOPHONIC RECIEVER FIDELITY US $49.99
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 Tube PreAmp Bare PCB with Upgrade design for C.J. PV-12 US $9.90
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 Tube pre amp Audio Line output transformer ( not Triad Utc ) US $35.00
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 ZENITH SONY TUBE AMP PREAMP TUNER RECEIVER SILVER KNOBS US $13.99
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 HP API NEVE ALTEC TUBE GUITAR AMP PREAMP TEST GEAR KNOB US $19.99
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 MARANTZ 1 MEG OHM DUAL TUBE AMP PREAMP LINEAR VOLUME BALANCE TAPER POT US $77.99
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 Tube Preamplifier Board With Volume /Bass /Treble /Balance Adjust with Schematic US $68.50
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 Tube Amp Chassis DIY 14.2x10x2 Aluminum Project Box Enclosure Stereo Amp Preamp US $82.00
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 Meixing Mingda MC-2A3 Vacuum Tube Pre-Amplifier 20th Anniversary Brand New US $1,899.00
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 R-Core Power Transformer for DIY tube DAC, preamp, etc. US $35.00
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 Vintage Regulated Tube Power Supply for Preamp Marantz Etc US $259.00
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 Tube PreAmp Finish PCB - Upgraded design for Cary SLP90 US $76.00
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 VARIAC REGULATOR 4 VINTAGE WESTERN ELECTRIC TUBE AUDIO POWER PREAMP AMPLIFIER US $249.00
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 Fisher 80c tube preamp MINTY! US $650.00
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 MCINTOSH MC-275 240 C-22 MI-3 TUBE AUDIO POWER AMPLIFIER TUNER PREAMP CATALOG US $24.99
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 Telefunken ECC82 / ECC 82 / 12AU7 Audio Preamp Tube, Diamond Base US $69.00
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 12AT7 / ECC81 NOS Preamp Vacuum Tube (New Old Stock) AMERICAN / Western European US $10.90
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 12AU7 / ECC82 NOS Preamp Vacuum Tube (New Old Stock) AMERICAN / Western European US $18.25
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 Vintage 1953 Ampex 3761 Tube Mic Preamp Mixer + 5 UTC HA-100X Transformers MX-10 US $1,055.00
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 Collins 356A-1 Tube Microphone Preamplifier Mic Preamp US $315.00
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 Dynakit Model PAS-2 tube preamplifier Dynaco vintage FM tube tuner US $152.50
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 Vintage EICO Tube Pre Amp Amplifier HF-61 High Fidelity Master Control NR US $15.50
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 Vintage Tung-Sol 12AX7 Tall Plate Foil Getter Preamp Tube US $12.50
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 Vintage 1974 RCA 12AX7A ECC83 Preamp Tube US $9.49
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 GENERAL RADIO 0-140V@ 0-10A DUAL METERED VARIAC FOR TUBE GUITAR AUDIO AMP PREAMP US $489.00
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 Tube PreAmp Finish PCB- Upgraded design to Mcintosh C22 US $76.00
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 ALLEN BRADLEY 280K TUBE AMPLIFIER PREAMP LIN TAPER POT US $69.00
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 Vintage Dumont 12AZ7 Stereo Tube Pre Amp New In Box US $12.99
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 McIntosh MC-60 Tube Amplifier, C-8 Preamp, Articles, Info, NEAR MINT Original! US $29.75
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 Pilot 248b Tube Preamp Review, 1963, 3 pgs, Full Test, Very Rare! US $7.99
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 Heathkit Stereo Tube Pre Amplifier Amp US $275.00
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 RAPHAELITE Sinovt 6C16 Vacuum Tube PreAmplifier XLR New US $599.00
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 NEW METERED VARIAC 4 MARANTZ 9 1OB 7 8B TUBE AUDIO POWER AMPLIFIER TUNER PREAMP US $289.00
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 Eico HF-85 Tube Preamp. Original Nice US $600.00
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 Valve Class A Tube Headphone Earphone Preamp Mini Amplifier Bravo Audio Ocean US $129.99
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 RARE VINTAGE BELL RT-65 REEL TO REEL TUBE TAPE RECORDER AMP PREAMP US $150.00
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 Vintage RCA 5965 12AV7 Tall Black Plate Triple Mica Preamp Tube US $.99
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 Vintage Raytheon USA 12AX7A Tall Black Plate Baldwin Preamp Tube US $6.05
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 Vintage RCA 12AX7 Tall Black Plate Preamp Tube US $6.05
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 Vintage Mullard IEC 12AX7 ECC83 Great Britain Preamp Tube US $11.50
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 KENYON T 2 INPUT TRANSFORMER LANGEVIN ALTEC WESTERN TUBE PRE AMP PROJECTS US $80.00
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 Mullard 12AX7 ECC83 Preamp Vacuum Tube TESTS NEW US $3.25
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 RARE KENYON P202 INPUT TRANSFORMER LANGEVIN ALTEC WESTERN TUBE PRE AMP PROJECTS US $100.00
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 KENYON INTERSTAGE INPUT TRANSFORMER LANGEVIN ALTEC WESTERN TUBE PRE AMP PROJECT US $40.00
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 TUBE AMP PREAMP/DRIVER SOCKETS SECTION 12AT7 6X4 5651 US $12.95
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 Vintage GE 6ES8 ECC189 Mullard Preamp Stereo Tube US $9.99
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 218 213 185 156 136 125 VOLT 500 MA TUBE AMP PREAMP POWER TRANSFORMER TEKTRONIX US $249.00
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 Shindo Giscours Monoblock Tube Preamps with Phono Stage US $4,150.00
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 5 OHM 2 WATT DALE GUITAR TUBE AMPLIFIER PREAMP POWER RESISTORS US $9.99
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 HICKOK 6.3 150 210 VOLT TUBE PRE AMP POWER TRANSFORMER US $59.49
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 Meixing MingDa MC-7R Vacuum Tube Pre-Amplifier MC7R New US $499.00
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 Leak Point-One, Stereo 60 Tube Amp, Preamp Review, 3pgs US $7.99
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 TUBE SOCKET CONVERTER from ECC83 / 12AX7 into RUSSIAN Preamp tube 6N2P or -EV US $15.99
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 Quad 22 Preamp,Quad II Tube Amplifier Review,1960,3 pgs US $7.99
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 6X4 6N1 6H1N Vacuum Tube Preamp Pre Amplifier W/ Adjustable Bass Treble Balance US $42.00
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 Vintage Raytheon 12AX7A Preamp Tube US $.99
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 TUBE AMPLIFIER PREAMP REGULATOR MOSFET TO-3 HEATSINK US $39.99
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 HIFI stereo audio amplifier 6N3 Tube PRE-AMP Buffer US $59.99
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 Telefunken Smooth Plate 12AX7 Preamp Tube Germany - TV-7D/U Tested *DB* US $39.99
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 ampex tube preamp from reel to reel recorder A-122 US $25.00
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 6DJ8 US Made Audio Preamp Tube Free Ship US 48 US $9.95
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 jc) VTG The Fisher 400cx Tube PREAMPLIFIER - Nice - US $610.00
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Tube Preamp
Learn To Play Guitar Online
The review deals with each book separately and recommends purchasing them in a specific order to grow your knowledge in step with your building experience.
Learn To Play Guitar Online
Kevin O'Connor of London Power has created a series of books under the main title of "The Ultimate Tone." These books are truly unique and carefully tailored for the Do-It-Yourself (DIY) guitar tube amp hobbyist and boutique amplifier builder. The books have a home-made 'feel' as well... all the illustrations are done by hand and the books are photocopy-printed on 8.5?x11? paper and bound with plastic spines and clear plastic covers. There are six books in the series now with the most recent being released in the late spring of 2008. You may want to buy the entire series all at once and get a modest savings, but I think you should consider buying them one at a time and digest as you go, building projects along the way. A key point though... you don't necessarily want to buy them in numerical order. I recommend the following sequence:
- The Ultimate Tone Volume 3 - Generations of Tone
- The Ultimate Tone Volume 5 - Tone Capture
- The Ultimate Tone Volume 2 - Systems Approach to Stage Sound Nirvana
- The Ultimate Tone Volume 4 - Advanced Techniques for Modern Guitar Amp Design
- The Ultimate Tone - Modifying and Custom Building Tube Guitar Amps
- The Ultimate Tone Volume 6 - Timeless Tone Built for the Future Today
Play EXISTING riffs and patterns with speed and accuracy click here
The Ultimate Tone Volume 3 - Generations of Tone
This is the most important book in the series for the beginning tube amp builder.
Chapters 2 through 4 lay down the foundation of good DIY tube amp construction, filling you in on good electrical connections, grounding technique, lead dress and other wiring techniques, and mechanical layout including assembly methods like terminal strips, turret and eyelet boards.
The subsequent chapters each pick a particular 'iconic' amplifier, each iconic amplifier being a prototypical example of amplifiers of its class, and they are examined in detail as to the circuit topology, peculiar tonal characteristics that result and fatal flaws that the product is notorious for. Kevin provides the original schematics and then shows how you can apply the techniques detailed in the earlier chapters to improve the performance and reliability of the icon without harming the tone. The schematics are redrawn, layouts are provided and mechanical solutions are worked out to make each chapter a complete, self-contained, build-it-yourself amp project.
This process is repeated for several variations of the Champ in chapter 5 (this chapter greatly influenced my own single-ended amp project), then in quick succession: the Bassman, Plexi, 800, Bull Dog, AC-30, Portaflex, SVT, Bass Master, Custom Special, Guitar Mate, Herzog and Laney amplifiers are dealt with.
If you can only buy one book for your DIY guitar amp hobby I'd heartily recommend this one.
The Ultimate Tone Volume 5 - Tone Capture
Volume 5 picks up where Volume 3 left off, with a project-oriented approach and some sophisticated DIY tube amp solutions for guitar and bass.
The book starts off with a chapter overviewing vacuum tube operation called 'tube tone,' followed up by a chapter on guitar electronics and pickup characteristics.
The next two chapters are small projects: Sigma for effects switching and Triple-X for amplifier switching.
Chapters 5 & 6 are on transformers... important components but it made me yawn, sorry.
Starting with chapter 7, all the stops are pulled out and you are in project heaven... Major (200W), Soma 84 (EL84 amp), Standard (the London Power Standard Preamp from 1995 coupled to a 50W amp using four power tubes), Doppelsonde (mixing power tube types), AX84 (discussion on the original goal of a very low output power amp), Kelly (50W from 4 6V6s), and several other projects of lesser scope.
One favorite project I did was based on Kevin's reworking of the HotBox tube preamp pedal from Matchless in chapter 16. I built this pedal in a truly "true point-to-point style" (meaning terminal strips) in a tube pedal enclosure from Doug Hoffman, substituting a Baxandall tone stack and reworking the preamp values to be more Dumble-esqe (non-HRM type).
What would you do to match an amplifier to Yngwie Malmsteen's style? See chapter 18, 'Swede.'
The Ultimate Tone Volume 2 - Systems Approach to Stage Sound Nirvana
Volume 2 is not project oriented. The bulk of the book, chapters 2 through 5, deals with power supply tricks and a comprehensive overview of power amplifiers, including tube, solid-state and hybrid power amps. Chapter 3, on tube power amplifiers, has some very practical information on mods and fixes to Marshall and Fender bias circuits.
I like the 1st and last chapters of Volume 2 the best. The first chapter is a short discussion of sound stages and how you might setup your gear on stage for the best audience/band experience. The last, chapter 6, is called "Pillars of Tone" and in this chapter the major contributors tone at the block-level of a guitar tube amplifier system design are discussed one by one and Kevin provides some very valuable insight into tone shaping throughout the preamp/amplifier.
The Ultimate Tone Volume 4 - Advanced Techniques for Modern Guitar Amp Design
This is the book you'll want to buy if you feel the need to get deeply involved with the power scaling technology that Kevin has developed. Power Scaling, coined and trademarked by Kevin, is the way you can get aspects of power amp distortion (as opposed to preamp distortion) into your tone at bedroom volume levels. Volume 4 is not DIY project oriented but explores the issues, including attenuation, power scaling (both down and up), sag, and power management, tackled by modern guitar tube amp designers.
That said, the second-to-last chapter in Volume 4 might be important for a broader group of enthusiast builders... design philosophy. In this chapter Kevin provides a hierarchical design process that could be used to make key decisions on how you approach your next project.
The Ultimate Tone - Modifying and Custom Building Tube Guitar Amps
There is no volume number in the title of this book, it was the 1st. Personally, I bought it for completeness. I specifically wanted to have the 'perfect effects loop' information, although the loop itself is incorporated into a project in Volume 5. TUT also has some excellent material on reverbs and signal switching methods that is not explained in the other volumes. The first half of TUT introduces/overviews tube amp systems, power supplies & grounds then focuses on preamp and power amp modifications to commercial amplifiers (e.g. Marshall / Fender)... if you are totally new to tube electronics you may want to buy this 1st volume at the same time as Volume 3.
The Ultimate Tone Volume 6 - Timeless Tone Built for the Future Today
In many ways, Volume 6 is a continuation and extension of the material in Volume 4, where Power Scaling is introduced. In Volume 6 a new 'direct control' version of Powerscaling is featured which was introduced in Vol 4 but flushed out with comprehensive circuits and applied to 'sag' and sustain control as well in Vol 6. The new scaling circuits have many advantages for a DIY builder like greater noise immunity and less sensitivity to layout, etc.
I applied the new DC Power Scaling to a Trainwreck clone project and was really impressed with the improvement in 'playability' at lower volumes... the unmodified Trainwreck Express circuit is just too loud for domestic use, needing to be cranked to get the sweet tones it is renowned for.
One of the chapters in Volume 6 is dedicated to the Dumble amplifiers... something I was really looking forward to since many of my hobby projects focus on those circuits. I found this short chapter to be a good introduction to the overall architecture of the Dumble amps, written from the point of view of the evolution from the early modified standard amps that Alexander Dumble started out doing, but I felt the chapter fell short in discussing some of the more important subtleties of the later Dumble models.
Volume 6 also has lots of other material in it, including a great tutorial on designing really high output power amplifiers and a great chapter on high gain amplifier designs with real-world circuits referenced and detailed.
In Summary...
Kevin's books have a very empirical approach. He encourages you to set aside convention in some instances or not be afraid to try combinations of tubes or even pulling tubes and in all cases clearly explains why it is o.k. and points out any reasons why it wouldn't be o.k. All the examples in the books are very practical and he certainly has the DIYer in mind as he is writing.
Kevin's body of work is truly encyclopedic in nature, and considering that, one feature sorely lacking from his books is any kind of indexing... this is aggravated by the fact that Kevin constantly refers to previous writings rather than repeat himself in a new volume, and it is very difficult to put your finger on the reference even with the other book in hand. Perhaps search engine technology, like Google's ability to search protected content, could be put to good use in this case and provide a kind of 'auto-index' on the web of all of Kevin's books without actually giving away the book itself. Or better yet, how about an e-book format of Kevin's entire collection of TUT books... I think all of the e-book readers include searching capabilities... and Kevin's hand-drawn schematics would probably scale adequately and be very readable on the e-paper displays these devices feature.
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About the Author
Play with that star guitarist that you always admired. Click here
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