Actually I´m using 30 kOhm with my AT-ML180. And actually I did try 100 kOhm following Raul´s advice in 2014 (I think) and to my great surprise it and a couple of other vintage MMs like Shure´s flagship suffered from high register over emphasis, musically but not technically as the FR still was flat. The sound simply became somewhat harsh and unlistenable.
100 kOhm may work with Raul´s preamp but not mine. Frankly I think that 100 works properly and as it should only with 4 ch cartridges such as JVD. Because those 4 ch carts are designed only for 100 kOhm.
And actually the AT-ML180 and many other best ATs perform best at lower values 20-30 kOhm and very low capacitance at 100 pF IME. My ILLUSION preamp works at 20-30 kOhm range at best for all my MMs. My other phono preamps have "normal" 47 kOhm and are OK but I´d like to have lower values.
Interesting, isn´t it ?
100 kOhm may work with Raul´s preamp but not mine. Frankly I think that 100 works properly and as it should only with 4 ch cartridges such as JVD. Because those 4 ch carts are designed only for 100 kOhm.
And actually the AT-ML180 and many other best ATs perform best at lower values 20-30 kOhm and very low capacitance at 100 pF IME. My ILLUSION preamp works at 20-30 kOhm range at best for all my MMs. My other phono preamps have "normal" 47 kOhm and are OK but I´d like to have lower values.
Interesting, isn´t it ?