The three circuits were based on the vacuum tube ECC83 designed to produce phono preamplifiers in compliance with the RIAA standards. Recording Industry Association of America (RIAA) – the trade group ...
The project is based on 6418 Tube as it creates a RIAA Phono Preamplifier Kit since the tube is suitable for moving magnet cartridges. The project is based on 6418 Tube as it creates a RIAA Phono ...
Audio Research introduced the PH8 vacuum tube phono preamplifier that benefits from a number of circuit and parts improvements derived from their REF Phono 2. Rather than using the four 6922s of it ...
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