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04/08/26 at 07:52:04 



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45B (Read 175 times)
Bottlehead
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45B
04/06/26 at 05:50:17
 
Anybody have any experience with the 45B tube and amp?

Thanks,
Randy
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JHC
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Re: 45B
Reply #1 - 04/06/26 at 14:22:40
 
I have a set of Alan Eaton monoblocks, they are magical. Very different than my UFOs, much more pronounced low end, but not baggy or inflated. They are rich and dense. Right now I am running a set of Stradi tubes in them and those too are amazing.
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CAJames
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Re: 45B
Reply #2 - 04/06/26 at 14:53:15
 
Quote:
Posted by: Bottlehead      Posted on: Yesterday at 21:50:17

Anybody have any experience with the 45B tube and amp?


Do you mean specifically the EML 45B, or Type 45 tubes in general? Several posters have 45 based amps, but I've yet to see any reference to a 45B amp anywhere. Which doesn't mean they don't exist.
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Bottlehead
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Re: 45B
Reply #3 - 04/06/26 at 23:24:27
 
Hey Guys, thanks for the responses. I also have an Alan Eaton 45 amp. And a Dennis Had (Inspire) 45 amp. I enjoy them both, but I’m specifically referring to the 45B tube, which has the potential to put out @5W/channel, with different circuitry than a standard 45 tube amp. And yes, CAJ, EML is the only company that I’ve been able to find that makes the 45B. I spoke to Dennis Had about modifying my 45 amp, but he suggested moving to the DJH 45B amp, which will take advantage of the increased power of the 45B. So I’m mulling it over at the moment, and I just wondered if anyone else had a 45B amp, or had any info about the changes to the circuitry that are needed to use the 45B. I would hate to lose the magic of the 45 sound, so I’m hoping that the changes to the circuits aren’t too complex. I would just like a little more headroom.

Randy
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CAJames
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Re: 45B
Reply #4 - Yesterday at 01:20:41
 
Quote:
Posted by: Bottlehead      Posted on: Today at 15:24:27

...I would hate to lose the magic of the 45 sound, so I’m hoping that the changes to the circuits aren’t too complex. I would just like a little more headroom.


My guess is the change in the circuit is minimal. Just run the tube at a higher voltage with more current. The (audio) circuit for most any SET amp is extremely simple. I would be more worried about the change in the tube itself. Pretty much everyone agrees the 45 as some "magic." Can EML keep the magic and beef up the tube to handle the extra power? I'd be afraid that a beefed up 45 just becomes a 2A3 or 300B. But JMO/FWIW and all that.
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[Volumio | Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia
Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Mapletree Phono 3E
STR-1002 -> Woo WA22 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Audeze LCD-XC
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Bottlehead
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Re: 45B
Reply #5 - Yesterday at 05:14:24
 
Thanks, CAJ. More for me to think about. I should probably try to audition a 45B amp before I get carried away. Maybe as time goes on, more amp builders will take advantage of the increased wattage of the 45B. Or not. Your fears may prove to be well founded, and the magic may be lost at the higher power.

Randy
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Kamran
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Re: 45B
Reply #6 - Today at 03:30:03
 
Quote:
 I'd be afraid that a beefed up 45 just becomes a 2A3


Isn’t the 2A3 considered by many as a sexier version of the 45? If so, doesn’t that bode well for the 45B?
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CAJames
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Re: 45B
Reply #7 - Today at 05:37:18
 
My impression is the 2A3 is considered less magical than the 45. Like between the 45 and 300B on the magic scale. But I’m not an expert by any means. Certainly a 2A3 amp would be something to consider if one wanted more power than a 45.
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[Volumio | Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia
Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Mapletree Phono 3E
STR-1002 -> Woo WA22 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Audeze LCD-XC
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Bottlehead
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Re: 45B
Reply #8 - Today at 06:02:03
 
I was hoping for the 45 magic AND more power. Dreaming again, I guess.
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