@dogearedaudio the unit I'm talking about has 2 half-wave rectifier tubes, but the small manufacturer does state that if using a power tubes as rectifiers, you should only use for preamp, dac or low powered set amp. I'm sure there isn't going to be much voltage drop in a preamp that uses one rectifier for each channel.
Crucial TUBE question
I placed a KT 150 power tube into a Prima Luna Evo 300 preamp rectifier slot. I know. But what happened was surprising. The sound was, well, magnificent glorious. Nothing burned out. No smoke. No arc lights. I asked Upscale Audio to advise me as to what damage I may have done or could have done to the PL. They only said they would not advise placing anything but the original tubes in the slot. They would not commit to whether or not that power tube could be used in place of a rectifier to tube. So, is it an absolute or not? If so, why? I’d appreciate feedback (please, no slams) from anyone having any experience with this. Thanks!
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- 35 posts total
- 35 posts total