Accuphase A60/Accuphase A45

I own a Accuphase A45 for abount one and half year, driving Dynaudio Sapphire with ease. It is a very fine and dynamic enough,very clean yet musical amp. I don't feel any shortage of punch with this amp. I have yet to listen to A60 or A65.
I listen to Plinius SA103 driving Dynaudio contour S3.4 at dealer showroom, plinius sound more lively, smoother and concert hall effect whereas A45 sounds darker, very quiet background with the same power of bass production as SA103.
I have no problem in long hour listening with A45 but I suspect SA103 may have long hour listening fatigue. Any SA103 user please have your opinion. Thank you.

I also own a Accuphase A-45 poweramplifier driving my 3,5
way big floorstanders from Audiovector(SR-6)giving a very
rich detailed dynamic sound with great microdynamic and
deep stage perspective.It can even drive my speakers to very high soundlevels for exampel Bruckners symphony no.7
Mahler symphony no.8 I have listened to A-65 and must say
they are very similar to A-45 but give more of everything.
My loudspeakers have a sensitivity of 92dB so A-45 is enough for me.
Labo

I own an A-45 since NOvember Last year. It drives Tannoy Glenair 10 with ease. No preamp but a Coincident Statement Phonostage (4x 12 AX7 tubes) with 1 Line for my SACD player. and phono of course for my Micro Seiki turntable.
The amplifier set replaces my previous Accuphase E-250 integrated amplifer. I'm very satisfied with this clear, transparent and neutral character that gets a bit "warmed up" through the Tannoys. Deep and wide soundstage with dark background as stated by previous reactions. Especially female voices and string instruments like cello and violin sound almost as s live performance...well... kind of...
Now looking for a replacer for my Denon SACD player
Any idea?
Enjoy the music.

My take on this that any concern about the Accuphase A-45 being able to adequately drive any speaker is misplaced. It's output is rated all the way down to 1 ohm impedance with the power output doubling as the impedance is halved. They should be able to drive anything.