Thank you for your A/B testing report! As I undestand the result is similar to the comparison that you mentioned above and we decided to go with the Asgard 2 for my sister because they are so similar but the Asg a bit cheaper. I found out yesterday that the Valhalla performes perfectly. I tryed it with the HD650 and my speakers and I found out that on those two everything was totally fine, so EQ-ing will be my solution for the HD600.
I'm totally new to tube rolling. I'm interested in the EH 6CG7 tubes. I found replicas on the internet, so my question is, do you have replicas or genuine ones? And how does it work, do I order 2 big and 2 small ones? I don't even know what's the difference between them only that they are left and right channel.
Thanks for the great tips and support!