Hifisonix X-Altra RIAA Phono EQ Preamp
in Vinyl preamp
Important note September 2024: The BOM dated prior to September 17th 2024 was severely corrupted (my fault entirely by the way – I had multiple copies open and they were cross-syncing into the cloud). Here is the link to the audioXpress supplementary data that now has the completely corrected BOM. Here is the link to […]
Hifisonix Accurate Inverse RIAA Network
in Vinyl preamp
The diagram above summarizes the interaction of the cutting head response (purple) and the playback EQ (red) which produces the final flat response (green). Note that the cutting head and the phono pickup (cartridge) are velocity transducers and therefore the cartridge output rises at 20 dB/decade if the record groove is cut at constant amplitude. […]
Very Simple, Accurate RIAA Phono EQ Amp
in Vinyl preamp
Very High Quality Silk Screened PCB’s for this project are available from Jim’s Audio here:- Hifisonix RIAA Amplifier Here is a simple no-nonsense, accurate RIAA equalizer amp you can easily build. The design uses an all-active topology and is based around an NE5534A low noise opamp. I make no claims for originality but you wont […]