Problems? Low power - read: low sensitivity speakers playing in large, deadening rooms, 25W in 8 ohms is not gonna cut it.Yep, great sounding amp to a given level. better driving 4ohm speakers then you’ve got 50w first 25 Class-A.
A step further a 2ohm speaker then you have 100w first 25w Class-A!!!
Have a guess where I’m going ?? Wilson Alexia 90db and over 100w available for it's horror load impedance bass, again to a given level, I’d guess medium to medium/loud listening level with efficiency
Cheers George