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REDDI vs P15 Poll Time. 2017 update coming soon!

After all the clips which one?


  • Total voters
    109
Does the P15 also use a true output transformer design similar to Reddi?

IIRC, no. I stand to be corrected but the transformer doesn't load the tube like it does in the REDDI. I think the P15 uses a FET buffer between the tube and the transformer. I think the transformer is a parafeed type which means it is capacitor coupled like the Noble or Monique.

OTOH, from reading the Noble website, it sounds to me like the Noble is a tube preamp with passive transformer DI. But I may be mis-understanding. Many thanks to all the folks contributing tech and real-world experience, very interesting thread!

I'm pretty sure this is the case with the Noble. It's not physically big enough to have a true OT unless it has a push-pull output stage.

The P-15 has a true output transformer.

The tube is transformer loaded?

I will let @Azure Skies answer this, but the transformer in there is described as a Vacuum Tube Output Transformer by Cinemag.

It is a real transformer, which was the question I think.

It's not a true OT in the sense of how I defined that. Its primary winding is not the load for the tube gain stage and I don't think it loads the FET either. Different style of circuit than the REDDI. Note, I am not saying that parafeed outputs are inherently inferior to true OTs at all. They're just different ways to couple a tube to the outside world.
 
Noble is in the mail. Should have this up by late next week. What I'll probably do is just put it all in this thread instead of starting a new one. Or maybe just start a new thread. Either way I'm gonna post the clips up and it will be a blind comparison again at first, where I will just ask "Which one do YOU like best". Then I will reveal which one is which.
Then I will probably sell them all!:D
 
Noble is in the mail. Should have this up by late next week. What I'll probably do is just put it all in this thread instead of starting a new one. Or maybe just start a new thread. Either way I'm gonna post the clips up and it will be a blind comparison again at first, where I will just ask "Which one do YOU like best". Then I will reveal which one is which.
Then I will probably sell them all!:D

I vote new thread. :)
 
Noble is in the mail. Should have this up by late next week. What I'll probably do is just put it all in this thread instead of starting a new one. Or maybe just start a new thread. Either way I'm gonna post the clips up and it will be a blind comparison again at first, where I will just ask "Which one do YOU like best". Then I will reveal which one is which.
Then I will probably sell them all!:D
Something this amazing deserves a new stickied thread.
 
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