Sorry to disagree with the others, but I use a Denon DL103D with a slightly lower .24mV output. I've used a Monolithic PS-1 with 53 db of gain and that worked pretty well. Good enough to not have any real problems with noise or volume.
And, now I use that cartridge with an Acoustech PH-1 with 60 db of gain and it works GREAT.
So, I would say that you should be fine with 57 db of gain. It may not be 100% optimal, but certainly 95%. I'd say you won't have any noticable problems at all.
As with much of this stuff, it's try it to know for sure. But with my experience I'd say you'll be just fine.
Paul Green
And, now I use that cartridge with an Acoustech PH-1 with 60 db of gain and it works GREAT.
So, I would say that you should be fine with 57 db of gain. It may not be 100% optimal, but certainly 95%. I'd say you won't have any noticable problems at all.
As with much of this stuff, it's try it to know for sure. But with my experience I'd say you'll be just fine.
Paul Green