I’ve had an F3 powering speakers of similar efficiency. While the F3 is only 18 watts iirc I don’t think that 25 watts will be much different. Anyway, I definitely needed more power than what the F3 could deliver.That being said, music with moderate bass at my LP , about 10-12’, sounded great as long as things were kept in the 80-85 db area
Spendor D7.2 Pairing - First Watt F8
I have a First Watt F8 with a Modwright LS100 as a preamp. Considering the Spendor D7.2's to replace my Zu DW 6 Supremes. The Spendor's are rated at 8 ohms and 90db efficiency - their specs show amps from 25 -200 can handle them. The F8 puts out 25 Wats per channel into a typical 8 ohm load and loves efficient speakers. Anyone here running this combination or have thoughts on the Spendors paired with a Class A like the F8?