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Company of "The one and only", Nelson Pass. https://www.passlabs.com/ & https://www.passdiy.com/ & https://www.firstwatt.com/ Here you find information eventually including schematics, pcbs or links to forum's discussions about various designs by Pass Labs. If you get hold of one of the service manuals, always remember :"The service manuals are not DIY projects. You :will get an extra merit badge for navigating the :treacherous waters of any service schematic drawn :by Pass." [Nelson Pass] Don't trust mentioned voltage drops, bias values. Calculate them yourself to check! = Amplifiers = == Preamps == === Pearl Phonopreamp === Click here to go to the Pearl project main page === Aleph-L preamp === Click here to go to the Aleph-L project main page == Poweramps == === Aleph-30 power amp === Click here to go to the Aleph-30 project main page === Aleph-X power amp === Click here to go to the Aleph-X project main page === F3 power amp - PCB Group buy closed === Click here to go to the F3 project main page === F1 power amp - PCB Group buy === Click here to go to the F1 project main page === F2 power amp - PCB Group buy === Click here to go to the F2 project main page = Speakers = |