Audio Note Kit 1

Bought a used audio note kit 1 300b amplifier recently. Haven't had a chance to listen to it yet. Any opinions on the audio note amplifier? Obviously build quality is of importance, being a kit amplifier. Has anyone had a chance to listen to there 300b built? System will be a sonore ultrarendu>chord2qute>audio note>15in audio nirvana alinco(open baffle). My current amplifier connected to this system is a EL34 Set Audio Nirvana. What kind of differences in sound character should I expect with 300b Set vs El34 Set.