I am using a Benz phonostage that TRL moded for me. They also made me a power supply to replace the wall wart it came with.
Guess I have it about 6 weeks now and about 125 hours. Kinda hard to breakin a phonostage.......lots of LP's spinning.
Anyway, I have owned this model phonostage a few times already. So I am very familiar with its sound.
Cleary there was a change as it broke in and the sound without question is different than the stock unit. I have the wall wart too, so I can judge without the better power supply.
My best description of what the TRL mod does is provide a smoother and more even tonal balance. Nothing appears out of place or calls attention to itself. Also, clearly there is MUCH less distortion and noise in the signal. I can hear low level detail more fully fleshed out. And this detail is presented in a tonally "human like" way. In other words, it sound real, not electronic.
About what was actually done is still a secret here. But my best guess is that the transistors in the gain stage have either been replaced with proprietary ones. Or the circuit has been altered to improve upon the stock transistors that came with the unit.
Thata all for now.