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6DE7 power tube substitutes?

68.146.208.33

Posted by D_K on June 27, 2007 at 16:50:36

Hi,

A tube noob here with a small question regarding the tubes used in my pre/headphone amp. It is a Single-Ended Class A Tube Amplifier with Output Transformer which uses a 5AR4 rectifier along with 2 6DE7 driver tubes. I was able to find numerous information regarding 5AR4 substitutes (such as GZ34), but there seems to be a lack of discussion regarding these 6DE7 driver/power tubes.

So I have a few questions before I start my very first tube-rolling journey:

1) Are there any tubes types that can be used as a direct substitute to the 6DE7?
2) If not, should I search for certain brand/year for these 6DE7s?
3) What exactly does a power/driver tube do? Does the type of tube I use make a difference in SQ?
4) Which tube change - rectifier or the power tubes - would make a bigger change in SQ?

I apologize for such elementary questions. And thank you all in advance for your help and advice. It is greatly appreciated.

Regards,

Dave

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