Miyajima Lab Zero Specs?

The coil impedance for the Miyajima Zero Mono is 6 ohms and the recommended loading is 200 to 300 ohms, I prefer mine at 300 ohms rather than 200 but your tastes may differ. The Zero can be a bear fro hum so make sure your system has either a mono switch (as the hum is usually thereby cancelled) or a ground lift option. I also got best results from a step up -- a MusicFirst Audio Classic V2 with 1:10 ratio and 80K to 10K parallel load options resulting in between 100-500 ohms seen by the cartridge. Load capacitance is generally not an issue for moving coils so I've never seen specs on this.

I agree about the need to tame the hum. I have been using a Benedict Hothead mm with Bobs Devices SUT and getting good results, but I have recently bought a Pass Labs XP25 and was wondering about the best settings for the Zero. I will also try the SUT with the XP25.

Ideally the Zero needs a step-up. If hum is an issue then a mono button (or a double-y connector) cures completely. Seems to be less of an issue where a step-up transformer is used.

I have three Miyajima monos - Zero 0.7, Premium 1.0, and Kotetu 78 3.0. They are all slightly different but work superbly on the 6 ohm setting of my EAR Yoshino 912 preamp which I think equates roughly to a 1:20 step-up. In my view they are better suited to a step-up transformer - certainly it sounded better in a previous setup through a Hashimoto HM7 SUT (at the lower 1:15 ratio rather than 1:30) into my Aurorasound Vida phono stage than direct into the MC input which from memory is about 500 ohm.

I had not heard about using a double Y. I'm going to try it. I take it that the double Y is between the SUT and the pre-amp?