@zigggi,
I was in the same situation as you almost 2 years ago. No experience in tubes and wanted to try tubes. After researching a lot and getting opinions on this forum, I decided to go with the Bracket Labs Rhumba. I am very happy with this preamp. Highly recommended. I purchased it without auditioning. They have a trial period, but I doubt it that you will return it.
I was in the same situation as you almost 2 years ago. No experience in tubes and wanted to try tubes. After researching a lot and getting opinions on this forum, I decided to go with the Bracket Labs Rhumba. I am very happy with this preamp. Highly recommended. I purchased it without auditioning. They have a trial period, but I doubt it that you will return it.