Vincent SV-800 Class A Amplifier Gets Very Hot

I just recently (02-11-2014) took delivery of a new integrated amplifier the Vincent SV-800. My previous integrated amplifier was the Vincent SV-236MK. Both use tubes but the SV-800 uses more tubes actually. The SV-800 is a Class A amplifier and I notice it gets very, very hot. The sound is wonderful and really not much different than the SV-236MK.The speakers I use are the Bower & Wilkins PM1s and also recently purchased the Sony HAP-Z1ES high resolution music player/Musical Fidelity A5 CD Player.