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Still online, we are. The code for this website is getting old, but still works well as far as I've seen. I may update it with new code and new features eventually, one day when I have both free time and focus. Until then, the content is still useful, I'm keeping it online. Comments and donations are welcome, but include your email address if you want a reply.

Ideas for the future of the site -
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  • automated account creation - the membership process should be automated. I rarely hear a complaint about anything, but I don't think people feel so safe emailing me a username and password to set up an account. I think people may feel more safe dealing with an automated system. make a donation, then type your account into right in to the computer and have it set up on the spot.
  • members only forum - the site doesn't seem to need a full forum, but it could still benefit from a single simple board or mailing list, maybe. still optional, but maybe only available to members. non-members wouldn't be able to post on or see the forum. for those who donate to openly communicate.
You can send me your comments in the form above. I'm not putting any work into these changes without getting feedback from you!
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Last Accessed Size  File
05-28-20 40418  4KCC Complete Preamp.png
05-28-20 773077  Advanced Preamplifier Design Follow Up 1.pdf
05-28-20 2630750  Advanced Preamplifier Design Follow Up 2.pdf
05-24-20 1284227  Advanced Preamplifier Design.pdf
05-24-20 4500983  Advanced Preamplifier.pdf
05-11-20 200334  Austereo Control Amplifier.pdf
05-24-20 26000  Basic Complete Tube Preamp.gif
05-26-20 563903  CMOS Switched Pre-Amp.pdf
05-24-20 247741  Cevni-poj Tube Pre-amp.pdf
05-29-20 648408  Construct a Wide Bandwidth Preamplifier.PDF
05-15-20 54135  FET Preamp With Tone Control.jpg
05-24-20 490417  High Performance Stereo Preamp.pdf
05-28-20 1319086  His Master's Noise A Thoroughly Modern Tube Phono Preamp - diyAudio.mht
05-11-20 448405  Low-Noise Pre-Amp with Weighting Filters.pdf
05-21-20 826894  MXR_M-140_Schematic_p_1.jpg
05-28-20 77322  Original RCA Phono Preamp.gif
05-28-20 126159  Preamp - No Tap loudness.jpg
05-29-20 375386  Preamplifier with Tone Control with FET 2N3819.xps
05-28-20 21432  Spiced PAS Preamp.gif
05-13-20 1298066  Stereo Preamp with Everything.pdf
05-10-20 20484  Symphonic PM-313 Pre-Amp - All Discrete.pdf
05-13-20 1052747  TAP Pre-amp.pdf
05-29-20 935856  The Class-A Amplifier Site - Modular Pre-Amplifier Design.mht
05-24-20 1903117  Tubehead (2).pdf
05-24-20 44338373  Tubehead.pdf
05-29-20 92286  Turner Complete Tube
05-13-20 139445  Unitronics SP175 Pre-Amp Kit.pdf
05-10-20 2158694  Unitronics SP175 Preamp Assembly Information.pdf
05-17-20 229454  Unitronics SP600 Phono Pre-Amp.pdf
05-18-20 32435  Unitronics UA150 Pre-Amp Block Diagram.pdf
05-13-20 1049926  Wide Bandwidth Pre-Amplifier.pdf
05-25-20 852737  Zero Distortion Stereo Preamp.pdf

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