I'm still not 100% clear on whether or not leaving it in standby mode cuts down on the tube life. Hopefully this was informative for someone other than just myself. In HT pass-through, tubes are in operate mode in case you want to change inputs back and forth. Standby mode increases tube life simply by keeping tube warm all the time. In standby mode, only voltage #1 is applied. There are other grids in output tubes but just covering the basics here. grid gets negative bias - think of it as the spring on the accelerator pedal without which the engine would self-destruct filament, because tube needs heat to runģ. When a tube is running, voltage is applied to:ġ. Second response when I asked for clarification on a few points: Kind of like heating and circulating engine oil before cranking the motor in freezing weather. When voltage is applied while the tube is cold, the cathode gets stripped of electrons rather quickly (especially if signal is applied at that time). when switching on operating mode) the tube is of course already warm. Standby mode leaves the filament of the tubes running, so when voltage is applied to the plate (i.e. It seems to match up with what has already been posted here and on the AA thread referenced by Jea48, but it's always good to hear it from the source. Here is the reply from SF Tech support concerning what happens during standby.
SONIC FRONTIERS LINE 1 UPDATE
Please update the thread when you have some info on the tube dampers, I've never heard of them before. I can post my results if you like? It will be a week or two before I will have meaningful information. Hopefully my tubes are still good and I don't have to dip into my stash, but we'll see. So I'm going to see what type of changes I can hear from trying out the different tubes, including the stock ones. The tube life of the Amperex's is supposed to be 10K hours, that's about 2 years. Recently music has started to sound a little dull and lifeless so I decided to break out of the extra tubes that came along with it when I purchased it from a gentlemen here on Audiogon. I would think turning it on and off daily would do more harm than just leaving it in standby when I'm not home. Mine is tied into my HT rig so between listening to music or just using the HT bybass to watch TV/movies it's on every day. The only time I completely shut mine off is when I'm going out of town for the weekend. I've seen this number referenced by more than one person. Supposedly it runs at about 10% of the normal operating mode while in standby. The information I've come across during that time suggests that putting it into standby is a trick used by SF to increase tube life ( as opposed to leaving it on all the time).
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