FWIW, I think a lot of us ordered our first Decware amp without ever hearing one. I know I did.

Not knowing what a 45 amp sounds like I can only speak in the most general of generalities. The Decware SET sound tends toward the linear, transparent and detailed with liquidity more than warmth. Other SET amps might be relatively warmer and rolled off at the frequency extremes and lose some detail and dynamics in the SET yumminess. Regardless, I'm a big fan of Omega speakers and you should be getting outstand sound. Since it looks like you have plenty of tube amp experience you're familiar with "break in" and understand your amp will sound better after 100+ hours than it does out of the box.

Congratulations and keep us posted on you journey.