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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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In Reply to: 26 instead of 27 driver w/45 posted by audiobag on January 29, 2007 at 13:07:23:
Among IDHT's, the 27 is probably my favorite. But the best ones are the globe mesh plates. The move to a 26 here is not as big as it should seem, going to DHT, especially since that will probably be DC heated. And a DC heated 27 won't matter much to the sound compared to AC since it is indirectly heated, except for less hum and buzz.If you haven't tried the old globe mesh plate 27's, I wouldn't move to 26 yet. If you get significant hum from the globe 27's, then you need to build a metal shield around it and DC heat it. I have a 27 line stage that required both of these measures. It was the best line stage I had before I moved to a TVC. The extra steps to get it quiet really paid off.
That said, I do think the DHT drivers sound better. I think the 01A is the best sounding driver I've had in my system. But it is a lot of effort to change over.
But also, finding a good pair of RCA globe meshplate 27's is not all that easy either. Some hum more than others. The problem with this particular IDHT is that they hadn't yet figured out the concept of twisting the filament for hum cancellation inside the tube. So hum it does a bit on those early versions.
Kurt
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Follow Ups
- The 27 is an excellent driver tube - kurt s 21:32:24 01/29/07 (0)
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