Mu-so power versus UnitiQute

Claiming 450 watts is marketing puffery. The mu-so has six 75-watt amps, each dedicated to a speaker driver (three per channel). The Qute provides 30 watts per channel.

Mu-so amps are class D I believe, versus "proper" amps in the Qute

Class D amps are still rated by sine wave output - no difference, it's still the same measurement.

Why does it matter?  If the Qute pays loud enough with your chosen speakers, then the extra watts are irrelevant.

So, for the avoidance of doubt, the Mu-so will 'go louder' than the UnitiQute and UnitiQute 2?

I'm enjoying owning a Mu-so so much that I can see me upgrading at some point. But I wouldn't want something which was any quieter.

How loud the UnitiQute or the UnitiQute2 will go is down to the design, size and efficiency of the speakers they're paired with.  Coupled to some super-efficient horns either will go plenty loud enough - your ears will shutdown first.  Then again, paired with some Quad ESLs, they won't give you PA levels, and the speakers themselves will probably surrender first if you push too hard as the power output of the Qute is probably more than the ESLs ideally need.

So you like it so much that you're thinking of selling it! Welcome to the madhouse, you'll find plenty of kindred spirits here....

I ran a qute 2 with a couple of sets of speakers including some gurus and it will go loud enough to hurt you ears in an average size room.

Ah, I hadn't considered that. Thanks for all the advice.

Well, not for a while! I know that a lot of people here look down on the Mu-so, but it's my first taste of almost real hi-fi and I'm definitely catching the bug.

I have medium efficiency speakers (88dB per watt) and at my normal loudest listening level a -10db sine wave  is about 1 watt.  In other words for normal use, listening to music I never need more than 10W.

If I turned it up to 30W it would start to be uncomfortable (for me).  Unless you are one for monster volumes, as Richard says, 30W is sufficient with reasonably efficient speakers.

In fact if you were to use speakers of 90dB / W efficiency the Qute would play louder than a SU driving speakers of 83dB / W (assuming both are 8ohm).  Speakers usually make more difference to loudness than amplifiers do.

I tried cranking my Qute2 (via PMC 21's) whilst playing one of my own heavier tracks, the damn thing nearly pinned me to the wall !!! & that was only @ 70% with the audio limiter control in the app set to 90%. my ears where ringing like I'd just got out of a loud gig!!

Don't be fooled into thinking Naim's watt's are like everyone elses, they aren't, its like they're on steroids!!

Second that.. there are Watts and naim Watts, no comparison.

... which are nothing compared to Naomi Watts

Absolutely,  James Watt

is nothing like Naomi