You can damage the output transformers with no speakers connected. This applies to all the tube amps I've used. Won't hurt most transitor amps , but bad for tube amps
1st Tube amp question
I just purchased my 1st integrated tube amp, the Wilkenson R8. Can I turn it on with no source and no hookup to speakers to start burnin time? I have read it should always have a source and be hooked up to speakers so as not to damage. Can you offer advice for first time use?