In my Blue Circle preamp, I tried a few different tubes.
The Sovteks seemed kind of rich, but lacked resolution and sounded a bit fuzzy.
The Philips JAN tubes had good clarity, but lacked warmth.
I wanted a bit more warmth and richness, so I was told to stay away from Siemens, as their forte is clarity as opposed to warmth.
I tried Valvo 7308, and they seem to offer the best of both worlds since I plugged them in. Great clarity, but more of the richness I was looking for.
The Sovteks seemed kind of rich, but lacked resolution and sounded a bit fuzzy.
The Philips JAN tubes had good clarity, but lacked warmth.
I wanted a bit more warmth and richness, so I was told to stay away from Siemens, as their forte is clarity as opposed to warmth.
I tried Valvo 7308, and they seem to offer the best of both worlds since I plugged them in. Great clarity, but more of the richness I was looking for.