2. amps-preamps
  3. 1325001742

Maintenance for Tube Preamps

I've enjoyed my Conrad Johnson tube preamp for a decade or so. Other than replacing the tubes a few times over the years there hasn't been anything else done to it. Are there other maintenance tasks that I should attend to? I believe all the capacitors are polypropylene (no pesky electrolytics!). All seems well, but I want to make sure I'm treating it properly.
bama214

Showing 1 response by sibelius

sibelius
256 posts
 
Generally speaking, if something is wrong you will most likely be able to hear it. The problem with proactive maintenance (especially with vintage gear) is that you can change the tonal quality - and not necessarily for the better.

Contact cleaning is fine. I would advise against changing/replacing any internal parts other than tubes if the preamp is working fine.
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