Are there Sugden (Sugdenaudio) Single ended power stages? Schematic wanted

[tiefbassuebertr]

I have heard about single ended power stages in certainly models from the A21 series. Who know, which newer models and where I can get schematics?
Here some common information about Sugden, that I have found:
Sugden Audio: A21SE
Richard Allan Class A amplifiers
The Original Sugden A21
The J. E. Sugden A51 Power Amplifier and C51 Control Unit
6moons audio reviews: Sugden A21SE
http://www.precide.ch/test/sugden_A21 SE Image Hifi_2006.pdf

 

[AndrewT]

I think the A48 might be single ended.