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  • en TDA1543 non oversampling DAC

    Description: My brother and I have built a new no oversampling DAC, based on the Philips TDA1543 DAC chip, with  passive I/V conversion, no filtering after the digital to...
  • en TDA7439 tone control

    Description: Browsing through the Elektor magazine my brother found an interesting tone control based on Sony IC, but it was impossible for us to find this IC in any...
  • en Nelson Pass Aleph P

    Description: My brother and I have build two Nelson Pass Aleph P Class A preamplifiers, and we are very pleased with the sound. The preamp is controlled by a...

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