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Bookmark or Share- What Typically Causes Phono Hum? - Steve Hoffman Music ForumsThe Phono Cartridge If you've come this far, then the problem must be the phono cartridge. Most cartridges use hi permeability steel shells to protect the coils from electrical fields that can cause hum. However, not all companies use this system. As such , there are some cartridge brands that are sensitive to external electric fields and will hum.
- Tom Evans Mastergroove SR - a £25k embarrassmentGiving Mr. Evans credit for presumably having built and sold at least 58 more phono pres than I have. If he's matching all the components to tight tolerances to cut down on noise, I can understand the price being up there, though as with a lot of things in the world of audiophilia, I suspect some of that is also paying for the name on the front (even if this is the first time I've heard the name).
- Phono Stage RS2 - Steve Hoffman Music ForumsThe Phono Box RS2 is the ultimate phono preamplifier of the highest class. It is fully balanced from the input to the output. Electronics are fully discrete, no op-amps are in use and it uses split passive RIAA and DECCA equalization.
- Cambridge DUO, phono preamp anyone - Steve Hoffman Music ForumsCambridge Audio ALVA Duo Moving Coil & Moving Magnet Phono Preamp Review here Review and Measurements of Cambridge Audio Duo Phono Preamp Not been able to listen to my headphones for a while, my search ended and this modest phono stage with headphone output was one of it's kind, so I ordered one.
- Phono Stage Impedance Settings Influence On SoundThere's one other consideration -- voltage loss at the phono stage input. Common practice in audio signals is to have the load impedance be at least 10X the source impedance to minimize the degree of voltage lost at the input. This can be especially meaningful with such a low voltage source as a MC phono cart.
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