I have the same pre and posted a similar question a few months ago. It does not appear that any visitors here have done the upgrade.
I do not feel that I lack bass...maybe your other components/cable are holding back the pre's performance.
I am about to start tinkering w/replacement tubes. Mine are the orig stock tubes and have somewhere in the neighborhood of 3000-5000 hours now. I have a strong suspicion that they are getting tired.
Good luck. Feel free to email to discuss further if you wish.
I do not feel that I lack bass...maybe your other components/cable are holding back the pre's performance.
I am about to start tinkering w/replacement tubes. Mine are the orig stock tubes and have somewhere in the neighborhood of 3000-5000 hours now. I have a strong suspicion that they are getting tired.
Good luck. Feel free to email to discuss further if you wish.