My bear is arriving shortly, so I would need some op amp recommendations. Any suggestions?
Burson op amps are pretty nice, have not heard any complaints from anyone I know who bought some. I don’t have any specific recommendations for the B4 though.
If you can get it to fit, 2x OPA627 (Burr Brown) on a brown dog adapter.
I looked at those, but kinda expensive. Two of them cost almost as much as the amp it self 
Lets try with 40 euro / dolllar budget
But thanks for the ideas, Burson is nice, but sadly sold out at drop