While I have not heard the Golden Atlantic in my system, I have done extensive tube rolling in my B7, (300b’s, 45’s, 101d’s, and finally 2a3’s). All had a very significant influence on the sound of my system. I ended up with a set of NOS Sylvania 2a3’s. These provide upper end sparkle, glorious mid range and great bass punch. But, as always, your results may vary. I found this tuning ability a great advantage.