The Sophias are a more forward, sparkly EL34. This is in contrast to the Gold Lion KT77 for example which is going to be more rolled off. Assuming you like a slightly more forward/linear presentation, they are brilliant.
I have a few customers running these in Lampizator DACs and they rave about the detail they get from them.
I have a few customers running these in Lampizator DACs and they rave about the detail they get from them.