Tube or SS integrated for PSB Imagine Ts

Hello,

I am driving my Imagine Ts with an Arcam AVR300. I also have an Arcam rDAC and use it for two channel stereo (using the stereo direct mode in the Arcam). I want to try out either a Tube or SS integrated amp to see if I can get more resolution for two channel listening.

Any suggestions and recommendations ?

Thanks,
Seenu