Audio Technica AT33PTG/II MC Cartridge, anyone have it or heard it?

I have been using 60db gain for this cartridge and it sounds great. This is the gain setting that KAB usa recommended. However I punched in a formula to figure out the right gain for this cartridge and I came up with 70db. My Hagerman Trumpet MC has a 68dm setting so I gave it a shot. It sounds much better. More bass slam and more fine detail. This is the result of a better signal to noise ratio.

Loading this cart at 60db is too little. Can’t believe it took me so long to figure this out.

Phono gain alone is never the whole story. You need to add linestage gain. You need to consider amplifier input sensitivity (how many signal volts are required for full amplifier output) and speakers sensitivity . Also room size and reflectivity of furniture. Thus no on line calculator of phono gain can be fully relied upon. But your direct experience counts of course.

Huh?

where do you get these high gain numbers?

I found a chart of Step Up Transformers:

Ortofon, Fidelity Research; Denon; Audio-Technica; EAR; Supex; Bryston; Nakamichi; Sony.

highest gain +36db (XF 63.1) (for a coil with 3 ohm impedance)

lowest gain +16.5db (XF 6.7) (for coils with 40-250 ohm impedance)

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AT33PTG/II cartridge: .3mv signal; 10 ohm coil impedance

10x formula guidance is 100 ohms impedance to be shown to typical phono stage 47k

(impedance shown formula is: (typical phono stage) 47k divided by XF squared).

Or whatever impedance your particular phono stage is divided by XF squared

My SUT, Fidelity Research FRT-4 has Pass for MM and 4 options for MC.

4 XF (x factors) with resultant impedance shown to the phono stage

3 ohm input: +31db; XF 35.84 = 10.8mv signal = 37 ohms shown

10 ohm input: +26db; XF 20.68 = 6.3mv signal = 110 ohms shown

30 ohm input: +25db; XF 18.27 = 5.4mv signal = 141 ohms shown

100 ohms input: +20db; XF 10.55 = 3.3mv signal = 423 ohms shown

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EAR MC4 has 4 options: +30db; +28db; +25db; +20db.

Denon AU-320 2 options: +31db; +20db

What am I missing??