The sound of A2 operation

[Nsaran]

This is a sound of my Gm100 ran in A2 class Gm100 Se mono block tube amplifier - YouTube

 

[Nsaran]

The sound of A2

My Gm100 ran in the A2 class

 

[Lingwendil]

Showing us the sound of your setup-in your listening room- through a youtube video- only shows us what our sound system interprets it as...

 

[HollowState]

Who's lovely singing is that?

 

[Bigun]

that’s a great looking tube!

 

[HeyBill]

I was under the impression that if you don't leave A2 the sound should be good. No direct experience.

 

[astouffer]

I used the 811a running in a2 for a while. It sounds like a tube 🙂

 

[jhstewart9]

My Gm100 ran in the A2 class

Would that pass a UL safety test?🙂

 

[pcan]

Is this amplifier related to the NAT audio Magma? The FrankFrank output transformer looks like a custom part, I don't see any product number on the label in your picture. I've found good references about this transformer brand from Thailand on audio forums, but I never heard it myself and it seems to be not available anymore on large ecommerce websites. Is it expensive, and are you satisfied with the result?
About the UL/CE safety ... I guess that this kind of products should be classified as experimental devices, and sold with the matching safety sign and barriers ;-)

 

[SpreadSpectrum]

I've done A2 with an 826. Sounds great.

That's a beautiful tube! What plate dissipation are you running at? I can't imagine you are getting close to the 1kW rating!

 

[cnpope]

Who's lovely singing is that?

Soundhound gives "Nareekrajang Khantha Mat". Available on youtube. Very nice indeed!

And the amplifier is very impressive, also!

 

[HollowState]

Thanks for the tip. After some searching I found it. (Youtube)

 

[Nsaran]

I've done A2 with an 826. Sounds great.

That's a beautiful tube! What plate dissipation are you running at? I can't imagine you are getting close to the 1kW rating!

Hi

Even the nat audio is not operate to 1kw pd 175w power is only used about 1/3 off max pd Your can run. It to 900w pd with higher ht and mor andode bias.

Exe the load impedance 1k vp 600v bias 100 ma the giant can signings with 6to8 watt power out put in negative bias mode If your run in positive grid bias the bias are rising to 300 or 500 ma get 20w power output buy the way a thd is to high too

Regard

 

[Nsaran]

Would that pass a UL safety test?🙂

It’s builds in thailand. Ul not covering to me but I’m strongly shure The all of parts of my amp can handle high voltage cos if it not saved I will die. Before you can hear the voice of it.

 

[Nsaran]

I was under the impression that if you don't leave A2 the sound should be good. No direct experience.

805 tubes ran in a 2 class anyone say it sounds good. So The gm100 to

 

[Nsaran]

I've done A2 with an 826. Sounds great.

That's a beautiful tube! What plate dissipation are you running at? I can't imagine you are getting close to the 1kW rating!

Soundhound gives "Nareekrajang Khantha Mat". Available on youtube. Very nice indeed!

And the amplifier is very impressive, also!

Hi. Your right the singer is "Nareekrajang Khantha Mat"

 

[franksmith]

GE or RCA 808 in A2 heating the living room.

First time experimenting with A2 and enjoying it.

 

[Nsaran]

Nice amp the tube is hard to find in my home land hope some day i will finds them. And made it sing a song

Regard
Saran

 

[SpreadSpectrum]

I wanted to build with the 808, but they were too difficult for me to find.

100TH look about the same and have a higher plate dissipation rating, so if it is the look of the tube you are after that is another good option as they are much more plentiful.

 

[BUIZERD]

@ Nsaran,

Is your amp normal SE or ultra parafeed?

BUIZERD