I agree with @jmcgrogan2 that you should not run the transformer into the MC input on your Herron phono stage
From the review in Stereophile. The T-2000 transformer has 36 db of gain.
"At a ridiculous 0.05mV (50µV), there is no preamp with high-enough gain to accept this directly. In fact, there are probably zero head amps made that are quiet enough to be used with this cartridge, either, and that includes the MC inputs on preamplifiers (footnote 1). You must use a transformer and few of those out there are going to have enough voltage step-up for the MC-2000, You are pretty much obliged to use Ortofon's own T-2000—a veritable brick of a transformer, weighing almost 8 lbs!—which is (naturally) designed to be used with this cartridge."
From the review in Stereophile. The T-2000 transformer has 36 db of gain.
"At a ridiculous 0.05mV (50µV), there is no preamp with high-enough gain to accept this directly. In fact, there are probably zero head amps made that are quiet enough to be used with this cartridge, either, and that includes the MC inputs on preamplifiers (footnote 1). You must use a transformer and few of those out there are going to have enough voltage step-up for the MC-2000, You are pretty much obliged to use Ortofon's own T-2000—a veritable brick of a transformer, weighing almost 8 lbs!—which is (naturally) designed to be used with this cartridge."