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
05-21-19 83216  4QD-TEC Audio preamplifier circuits.mht
05-21-19 93330  AMB-Mini3-Schematic.jpg
05-21-19 732985  AN241 Analog Input Buffer Architectures.pdf
05-21-19 2628786  Advanced Pre-Amplifier Additions.pdf
05-21-19 309033  Bride Of Zen - A Single Gain Stage Preamplifier By Nelson Pass.pdf
05-21-19 10240  Class A buffer.jpg
05-21-19 444931  Comment on Preamplifiers using Op-amps.pdf
05-21-19 49402  Designing JFET Audio PreAmplifiers.pdf
05-21-19 4166  FET PUSH PULL BUFFER.gif
05-20-19 249192  I-O Circuit for THAT ICs.pdf
05-21-19 49801  JFET-Bipolar Cascode.jpg
05-21-19 16259  JT-11-BM High Level Differential IC Output Stage with DC Servo.pdf
05-21-19 19385  JT-123-BL High Level Low Impedance Differential Output Stage with DC Servo.pdf
05-21-19 60233  Jensamp51X_rev03-PartsList.pdf
05-21-19 33182  Low Noise Microphone Preamplifier Circuit.gif
05-21-19 21442  Low distortion gain block_.mht
05-21-19 124989  Murin Servo Preamp.pdf
05-21-19 12094  Nakamichi Preamp stage.pdf
05-21-19 6428  Pre-Amp - High Quality - 3 Transistors Studer.pdf
05-21-19 5800  Pre-Amp Using 12Au7 Tubes.gif
05-21-19 1243460  Preamp Tube Gain Factors And Substitution Chart - 300guitars_com.mht
05-21-19 1367929  Real Grounded-Grid Amplifier.mht
05-21-19 18099  Simple 0 to 24 dB Gain Amplifier and Balanced Line Driver.pdf
05-21-19 15038  Simple audio preamp.jpg
05-21-19 55911  Tape Head Pre-amp.jpg
05-21-19 72768  Tube Buffer.jpg
05-20-19 711030  Tube Microphone Preamp.mht
05-21-19 62968  Tube Pre.jpg
05-21-19 26844  Van Alstine Transcendance Preamp Phono Stage.pdf
05-21-19 104737  phantom_fet.jpg
05-21-19 65744  urei1622s.jpg

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