Does using XLR cables (double voltage output) mean I can use lower powered amplifiers?

@thegreenman.
You can see my systems by clicking on my ID.

You have great speakers. It strikes me as you have great opportunities over time to improve your overall system to achieve greater SQ. I mean, I always look for the “best” component and then look at it’s potential if all components were upgraded to be of an equal and synergistic level. I don’t think you mentioned your sources. I’m assuming the Primaluna is an integrated amp.
.
Of course the power is more than about just loudness, but given the sensitivity of your speakers the more powerful amp you are looking at is likely to sound much better.

.

Given what you have said, have you looked at the Audio Research VT80se? You get warm tube… and really detailed. Now, this is my philosophy… but I try not to spread my money out and try always to step up… and never less than a 2x step up… since that creates some aspects of a sideways move. Anyway, if this strikes you as an interesting idea, go find a dealer and sit down and listen to one. If there isn’t one locally, take a little trip. I have actually flown across the country to audition stuff.

While I am not an expert the electrical aspects. I have tested and converted to XLR. Also have a lot of experience in high end audio. The simple answer is no not really. If you switch from single ended to XLR and don’t change the volume control it will get a little louder. So, technically you are using less amplification to achieve a higher sound level. First it is not a huge difference. And secondly how good an amp sounds is based on many factors, current available and how quickly it can increase output… etc. There is also the old adage that tube watts sound more powerful than solid state watts (I think this is because of midrange bloom of tubes). If you put all factors into the mix, you are not going to be able to buy say a 30 watt tube amp instead of a 60 watt… maybe a 58w instead of a 60w. Unless you are powering an incredibly efficient speakers… at the very fringes of what is possible it just will not matter. Good question though.

What is your other equipment?

All my components are tube except my streamer. Tube components tend to be more musical. Over the last fifty years tube stuff has gotten more detailed as solid state has gotten warmer and more musical converging on accuracy. To me the best tube stuff is captivating and intimate in a way other equipment is not. But it depends on what you are looking for.