PMC just announced active modules for both i and non i 25.21/22/23/24. Separate 100W mono-amps for each driver.
Do you think they would be better driven than with a 300DR? Having heard my 25.23 at the end of 300W amps with massive current capabilities, I feel 300DR is just a starting point.
Thanks for your input.
ATC have same approach and some prefer actives and some passives - in my room Active ATC’s were better but think the room plays a big part.
Gary
Thanks for posting this, as it’s the first I’ve heard of it. Having read up online it seems that there is an upgrade kit for £1,795 that dealers or owners can install themselves. So there is no need to buy a new pair of speakers. As ever the proof of the pudding is in the listening, and it would be interesting to compare my Nova/twenty5.21i with Atom HE/21i active.
Hmmm…interesting.
G
Quite a few active options, mirroring ATC’s approach.
PMC Twenty5.21i Active – £3975
PMC Twenty5.22i Active – £5275
PMC Twenty5.23i Active – £5975
PMC Twenty5.24i Active – £7975
Active Twenty5i upgrade – £1795
And if you buy the new active versions, ( c/w active modules already included ) the difference is just GBP £ 1400 compared to the passive versions, but GBP £ 1795, for the separate upgrade kit
R
The white finish, which I have, seems no longer available in passive or active versions.
G
…. And so it begins! 
Actually quite liked the white 
FROM PMC web:
"
These loudspeakers build upon PMC’s world-class design pedigree, combining the finest drivers available with the unique ATLTM (Advanced Transmission Line) bass-loadingprinciple, sophisticated Class-D amplification and a pure analogue active crossover.
PMC’s unique ATLTM technology uses contemporary materials to provide optimised absorption of unwanted mid-range energy within the cabinet, while extending bass output significantly with negligible harmonic distortion.
The electronics built into each cabinet provide two channels of ultra-low distortion Class-D power amplification, with a pure analogue 24dB-per-octave crossover providing perfect driver optimisation and integration. A transparent protection system is also included.
"
if I understood specs on the PMC web, they are D class amps?
where did you get(read) the price?
Surely £1795 amplifier modules can’t compete with the NAP300DR.
Surely.
G
Compete, yes. Match or beat? Unknown as yet, though Naim would hope not! But it is also a matter of what is compared: bi- or tri-amped active speakers with these amps might sound better than passive with one 300. On the other hand the result if compared with active bi- or tri- amping using 2 or 3 300s might be very different.
I meant for you! No, my path is clear…
Looking forward to hearing the results of your shoot out! 
This price is apsurd and very unapologetical from PMC…
Then, better separates, again 
I’ve been searching on here and on line and can’t find a clear answer on whether the streamer and preamp in an Atom HE is as good as that in a Nova. I’ll probably call Naim and ask for their view. But of course, having a PMC power amp, active or not, is going to change the sound.
so what is your personal projection?
Do you mean absurdly low, given that on top of the passive version’s £4575 or thereabouts it includes a 2 channel power amp channels and an active crossover?
I’m not following Neil, sorry.
G