Index of /Audio/Circuits/PreAmps/Building Blocks
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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 -
Here are some ideas I've been brainstorming. I don't think to much of the site should change, because it has been successful all these years with very little change. still nearly 1000 visitors a day to the site!
  • donations - I think it might be time to make some changes to the donations. I would rather see people get a lifetime membership and not have to worry about an expire date. here's an idea, a smaller recurring payment monthly, or 4 times a year, then maybe offer a second option, donate enough to cover the cost of the server for one month and you'll get a lifetime membership that never expires.
  • 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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new server -
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Last Accessed Size  File
07-17-19 93330  AMB-Mini3-Schematic.jpg
07-17-19 732985  AN241 Analog Input Buffer Architectures.pdf
07-17-19 2628786  Advanced Pre-Amplifier Additions.pdf
07-17-19 309033  Bride Of Zen - A Single Gain Stage Preamplifier By Nelson Pass.pdf
07-17-19 10240  Class A buffer.jpg
07-17-19 124989  Discrete Op-amp preamp with Servo.pdf
07-17-19 4166  FET PUSH PULL BUFFER.gif
07-17-19 249192  I-O Circuit for THAT ICs.pdf
07-17-19 49801  JFET-Bipolar Cascode.jpg
07-17-19 60233  Jensamp51X_rev03-PartsList.pdf
07-17-19 21442  Low distortion gain block_.mht
07-17-19 12094  Nakamichi Preamp stage.pdf
07-17-19 6428  Pre-Amp - High Quality - 3 Transistors Studer.pdf
07-17-19 5800  Pre-Amp Using 12Au7 Tubes.gif
07-17-19 1243460  Preamp Tube Gain Factors And Substitution Chart - 300guitars_com.mht
07-16-19 55033  Preamp with DC Servo.jpg
07-16-19 1367929  Real Grounded-Grid Amplifier.mht
07-17-19 18099  Simple 0 to 24 dB Gain Amplifier and Balanced Line Driver.pdf
07-17-19 15038  Simple audio preamp.jpg
07-17-19 55911  Tape Head Pre-amp.jpg
07-17-19 72768  Tube Buffer.jpg
07-17-19 62968  Tube Pre.jpg
07-17-19 83216  Various discrete transistor Audio preamplifier circuits.mht

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