low output mc: noise free listening possible?

Noise free LOMC phono source is possible if you divide the phono gain between transformer and phono stage.
I do have the worst case scenario in my set-up: very low output MC with tubed phono stage and high sensitivity (really high - aside from horns) speakers.
I am running a 0.15 mV cartridge on one end and a 99.5 dB sensitivity speaker on the other. Phono amplification with 22 dB gain step-up transformer feeding a 54 dB phono (tubed...) stage.
Very quiet.
The very same phono stage can be "pimped" to 70 dB alone. Using this generates more noise with less gain.
The SUT does a great job.

Dear Mikelavigne, - just as a further information: the Lyra Olympos running in Syntax' system has far more output than 0.17mV.
More likely 0.3 mV.
Does the Olympos you own indeed feature less gain than your A90 ?
I am really curious, as the 2 Olympos' I am familiar with (both serial # higher than 50 ), are much higher output ("louder"...) than the FR-7fc with its 0.2 mV.
Are there different versions of the Olympos around ?