Guessing preamp output would be similar on my 2060. Which amps would I be looking for if I was to need an amp someday? Would Monolith3 or a few Outlaw 2200 amps both be viable options?
You can't assume that at all. The 2060 likely have the same much larger power supply as the 3060, the output transistors may also be different. I think I might have the service manual and can take a look of the PS and output devices info if you wish.
If it does has a much larger PS and different output transistors, then Yamaha might have relaxed their typically aggressive protective scheme for the 2060/3060 a little, relative to the 1060/860.
I mentioned long time ago in some other threads that I wasn't sure if the 10X0 would be better than the 860 that Gene measured, now we have the confirmation, unfortunately it is "No/or not much" better. I still have hope for the 20X0/30X0 that are much heavier.
To answer you question, consider the following facts:
Pre out Vrms.................... 29 dB gain output................30 dB gain output.....................28 dB gain output
1 V.................................... 99 W ...................................125 W ....................................... 79 W
1.2 V................................. 143 W .................................180 W ....................................... 114 W
1.5 V................................. 223 W ................................. 281 W ...................................... 177 W
2.0 V................................. 397 W ................................. 500 W ....................................... 315 W
So if you are shopping for a 200 W power amp, make sure it has 29 dB of gain and you will in great shape. Something like the Anthem MCA amps will be fine.