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| Reference site for all electronics applications. Tutorials on power supplies, testing, audio, microphones. |
| Forum for the exchange of audio-related knowledge: from DIY amplifiers to audiophile recordings. |
| Open discussion about anything home theater related. |
| PdaPhoneHome.com provides pda Phone owners with news, forum, FAQ about PocketPC Phone Edition, Pocket PC, Treo 180, 270, and 300, Thera, Nokia Communicator 9210, Kyocera 7135 and 6035, Danger Sidekick, Sony Ericsson P800, Samsung i300 and i330, Microsoft Smartphone, and RIM Blackberry. |
| Extensive list of links and topics on vacuum tube audio applications, projects, theory, and design. |
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