As good as it gets

Yes but that is the answer to the question of I don't like this but they tell me it just needs to burn in, is that true? And the answer in that case is: no.
But that's not the question here now, is it?

The first question the OP asked has been answered. The second question he needs to do some homework and resubmit.

I guess I hope it improves a little. I am comparing it to another good amp and don't hear the sound I as hoping for.

One thing really frustrating, people dribbling little drabs here and there. Just come out and tell us wtf is going on, so we can help, okay?WHICH amps? If you want your POC to sound like SOTA, that ain't happening. If its close and you wonder if it will get there, well then you need to tell us which amps AND describe in what ways its close or different.
I could just come out and tell you exactly what to expect in terms of changes as a component gets more hours on it. Its a very similar progression almost totally regardless of what the component is. Or even if it is a component at all- Total Contact and Omega Mats break in too.
But its a lot better if you learn to think and describe better. So we can, you know, help better.

Of course it will sound better. And not just for 4 weeks either I bet. 

Tubes are the least of what benefits from being used. Most of the sound of a tube amp is transformers, followed by caps and then circuit design and parts quality. Very little of it is the tubes themselves. But tubes are the one thing guys feel comfortable changing. So being guys they assume what they do matters. It must be the tubes.

Its not the tubes.