I'm using a Tri-japan 300b integrated 18watt single ended to great effect with my Kensington SE. I'm convinced Tannoy prestige range is more about the quality of power rather than amount. They love valve and in particular Class A / single ended too.
Not sure about Stirling but I'm sure youll get a great sound from the Leben. I have also listened to an Almarro single-ended 20watt 6c33c integrated and was really impressed by the synergy.
It all comes down to personal preference. I'm a sucker for 300b, el34 Kt66 and kt88 valves because they are all audio designed tubes. I find the power and transmitter tubes a bit drier in sound and tone but the trade off is speed and bottom end.
Not sure about Stirling but I'm sure youll get a great sound from the Leben. I have also listened to an Almarro single-ended 20watt 6c33c integrated and was really impressed by the synergy.
It all comes down to personal preference. I'm a sucker for 300b, el34 Kt66 and kt88 valves because they are all audio designed tubes. I find the power and transmitter tubes a bit drier in sound and tone but the trade off is speed and bottom end.