I'm currently using NOS RCA clear top 12au7 in my Audio Valve Eklipse preamp. Looking for a 12au7 that's more transparent, detailed, maybe higher resolution to try with this preamp. Not looking for a tubey sound. Thanks.
I would say the Telefunken are most like what you describe followed by Siemens. Andy at VTS is proabably your best source for honestly measured tubes that you can rely on - the guy knows his tubes and seems to be very honest in my experience.
The Clear top should be in that "neutral" zone in most applications - and much cheaper than TF or Siemens. Glad it is working for you; you can drive yourself crazy rolling NOS and miss a lot of music while doing so. You might also want to try the RCA Black Plate version, again, much less than the Europeans.
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