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  #7221  
Old 01-08-2023, 11:20 AM
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Originally Posted by Isaacc7 View Post
Ok, but what advantages do mercury rectifiers have over solid state diodes? The Firebottle's rectifier swapping is a cool feature because it allows you to use different output tubes. But if you're going to be using one kind of tube why use vacuum diodes at all other than for the looks?
https://www.bandwidthaudio.com/post/...ate-rectifiers

The 5755 phono pre amp will also use an 80, and prolly a 5z3 rectifier as well.




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Originally Posted by cporada View Post
Thanks so much, Analog Addict!

I just scored a "cosmetically imperfect" Princess 274b mesh plate from Sophia , so I'm excited to hear what that does to the already amazing sound from the LP-2. If I recall, this is the rectifier you use; correct?


Are there any particular 6FM7s you have found sound best?
I use all sorts of rectifiers. The 274B is equivalent to a 5U4G, which I run regularly. I have a 274b somewhere, but hellifIknow where it is...

I haven't really used the 6JM6/6FM7 tubes. However, I have sorted the stock at the Toy Shop, and IIRC all the major US manufacturers made versions. Try them all, they're cheap...
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  #7222  
Old 01-08-2023, 11:41 AM
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Default And now....
The new Phono pre amp.

Untitled by analog addict, on Flickr

Untitled by analog addict, on Flickr

Untitled by analog addict, on Flickr

Untitled by analog addict, on Flickr

This phono pre features a 5Y3 rectifier, a pair of 6SL7s and a 12AX7 cathode folllower.

The retail price is $2500 plus shipping. We are taking orders now and this amazing piece of gear is being offered here first, not on that auction site.

PM me for details....
Last edited by Analog Addict; 01-08-2023 at 11:45 AM.
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  #7223  
Old 01-08-2023, 01:18 PM
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Wow! Very nice. Something else for me to want.
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  #7224  
Old 01-08-2023, 03:24 PM
Gooch01 Gooch01 is offline
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The new Phono pre amp.

Untitled by analog addict, on Flickr

Untitled by analog addict, on Flickr

Untitled by analog addict, on Flickr

Untitled by analog addict, on Flickr

This phono pre features a 5Y3 rectifier, a pair of 6SL7s and a 12AX7 cathode folllower.

The retail price is $2500 plus shipping. We are taking orders now and this amazing piece of gear is being offered here first, not on that auction site.

PM me for details....
That's a very nice looking phono stage
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  #7225  
Old 01-08-2023, 07:28 PM
Isaacc7 Isaacc7 is offline
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Originally Posted by Analog Addict View Post
https://www.bandwidthaudio.com/post/...ate-rectifiers

The 5755 phono pre amp will also use an 80, and prolly a 5z3 rectifier as well.
Hmm... So slow warm up time is the only advantage? The potential damage to the filter capacitors is a non issue, $40 every 15 years is quite a bit less than the price of good tube rectifiers! My push pull amp uses solid state rectification. When I flip the switch, the filaments light up, then the B+ is applied several seconds later, and then the bias voltage comes up. At least that's how it looks on the meters on the amp. If that's the actual case it would seem to get around the issues of solid state rectifiers right?

I have had 2 5ar4 rectifiers arc on me in my Firebottle. The general consensus seems to be buy a Mullard GZ34 and not worry about it any more. Think I'd rather have a solid state rectifier. I have gone back to using a 5u4g in the firebaottle and sacrificing a few watts of output power. My preamp uses a 5ar4 and I have a Matsushita one for it and a spare. I don't know what caused the other 5ar4 tubes to arc other than Russian ones don't have the best reputation.

I'm still leery of mercury rectifiers. Though if they last a very long time maybe the light show might be worth it. Are there any shipping issues with them?
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  #7226  
Old 01-09-2023, 04:57 PM
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Wow; that's a beauty
I'm glad I don't have a vinyl setup, or my wallet would be burning to do some spending on one of those
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  #7227  
Old 01-09-2023, 06:54 PM
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Is EBay the only site Dennis post his amps for sale?
Nope, they are listed in our Marketplace. Only available to Subscribers.
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  #7228  
Old 01-09-2023, 07:48 PM
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The new Phono pre amp.

Untitled
This phono pre features a 5Y3 rectifier, a pair of 6SL7s and a 12AX7 cathode folllower.

The retail price is $2500 plus shipping. We are taking orders now and this amazing piece of gear is being offered here first, not on that auction site.

PM me for details....
MM only? 47Kohm loading?
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  #7229  
Old 01-09-2023, 10:14 PM
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MM only? 47Kohm loading?
Correct. 47K on the loading. Dennis will manufacture MC step up transformers for an extra $350 per unit.
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  #7230  
Old 01-10-2023, 09:13 AM
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Sorry for the newbie question, but how does one access/view "the Marketplace"?
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