What tubes for a EAR p834

I recently purchased some fabulous NOS RCAs -- early 60s vintage from Andy at Vintage Tube Services. I must say that these tubes had an immediate positive impact on the sound. Less noise, more detail, greater dynamics. Overall, I'm very impressed. Much better than I thought.

These RCAs were not cheap though. I'm not sure what your budget is, but the RCAs were cheaper than NOS Teles and Mullards, and possibly NOS Mazdas. Highly recommended.

Sorry C Wise- but I realise that the Mazda are not currently produced but NOS type.

NOS teslas (12ax7) are currently in mine. I have used Electro-Harmonix and the Sovtek LPS as well as the stock tubes. The LPS may be one for you to try. They're only about $12 each. Though not as quiet as a NOS they do sound pretty good.

Just replaced the EI yugo set in mine with Tesla ECC803S gold-pin. To say this action brought a night and day difference would be an understatement! A most definite recommendation.

The Telefunkens would be fantastic, and better yet, they probably would last a lifetime. You could retube 5 times, as opposed to once with the Tele's, which would make the tele's a much better value, and they do sound great. You should be able to source some for $70-$100 pr NOS.