Tube preamps with HT bypass


Anyone know if any models that can engage the HT bypass with the power off or at least without the tubes burning?  Thought I read about one or two a loooong time ago that were able to do this.  Thanks!
soix

Showing 1 response by jwpstayman

I know that the Backert Labs preamps have a HT Bypass that works with the preamp turned off.