MONO cartridge recommendation

@folkfreak , I seem to recall from an earlier thread on the Zero that you run a custom mono phono cable to eliminate hum. What manufacturer made it for you? I’ve been eying this cartridge for along time but I have no mono switch on my preamps or phono stage, so a mono cable might be just the thing. Thanks in advance.

@folkfreak, Ah, sorry to bother. A quick search reveals my mistake. This was your good advice to me in that earlier thread:

I wonder if you could not make up a simple cable which adds the two channels together and gives you the effect of a mono switch? If your tonearm uses a detachable interconnect you could make one up (or have one made) and get the effect of a mono switch at the front end?

I have a Bob's Devices that has a ground-lift switch. I wonder if this would do the trick. I'll ping Bob himself, as he's also a Miyajima dealer. Out of curiosity, what step-up ratio do you like with yours?