[baronbeehive]

Here's the thing, I can't always nail down a consistent sound signature to a specific tube. Sometimes I think I get an idea of what a tube does only to be surprised at the result when I put it in. I just have too many moving parts. When I use them in my preamp, the Raytheon tends to have solid, open sound. When I use it as the input tube in my amp it sounds like that, well, sometimes.

For example, if I use it as the input tube with 6v6 outputs I get the open, solid sound I mentioned earlier. But if I use it with 807 outputs the sound mushes up and sounds grey or something. This amp has confounded me as far as how tubes' sounds combine.

No worries, I had heard it was good, just wondered if anyone else could confirm!

 

[Xavilaw]

Hi,

I've been lurking this thread for over a month, silent in my corner just trying to learn all i can about these amazing amps. I wondering if the Citadel can drive 4 or 6 Ohm speakers. I'm assuming yes, but would like to know as i like to have broad options with an amp. In the mean while i would be paring it to the Focal Clear OG and a Zmf Verite Closed and from all that I have read here it should sound great.
Thanks in advanced!

 

[SonicTrance]

I wondering if the Citadel can drive 4 or 6 Ohm speakers

It can but not to any extreme levels. Fill a normal sized room with music isn't an issue though.

 

[bcowen]

It can but not to any extreme levels. Fill a normal sized room with music isn't an issue though.

Using the word ‘normal’ around this crowd is not normal.

 

[Xavilaw]

It can but not to any extreme levels. Fill a normal sized room with music isn't an issue though.

That's good cause I don't do extreme anymore. Gotta keep my ears in good shape!!
The normal I guess I only have one way to find out
Thanks for the swift reply!

 

[UntilThen]

It will play ok at normal level. Here I have the Oblivion driving my Axis Voicebox S - 83dB 5ohms very inefficient speakers and it was ok. Citadel is a bit more powerful than Oblivion.

 

[UntilThen]

Good music can be affordable. Oblivion is driving these Boston VR2 now.

 

[Isaacc7]

No worries, I had heard it was good, just wondered if anyone else could confirm!

I do think it is a good tube. I might have bought 6 of them once I heard what it could do in my system. A smaller dealer I like had a good price on them.

 

[UntilThen]

After a week of Amperex 12ax7 (100mu), it's time to explore the 12AT7 (60mu).

The Amperex 12ax7 has nuclear capability in Odyssey. Well where does that leave the lower gain 12at7? I have here 3 different types of 12at7. See this article on all the different types. https://www.effectrode.com/knowledge-base/the-12at7-tube/

First to go into the amp is the Mullard PQ 6201. PQ I think means premium quality. Kevin Deal loves it. Sells like hot cakes. Now this is pretty amazing sound. So good it took my breath away. Gold pins adds to it's attractiveness. A pair cost me $200.

The other 2 are Siemens ECC81 and Philips Miniwatt ECC81. They will be assessed next. Now the 12at7 may be lower mu than the mighty 12ax7 but it is pretty strong ! Also 12at7 are very quiet which is a big plus.

This is a picture of my 12at7s.


As with all tube type, there is the holy grail of 12at7. It's the GEC A2900. This will cost you more than your wedding ring.... and naturally I don't have it.

 

[jonathan c]

After a week of Amperex 12ax7 (100mu), it's time to explore the 12AT7 (60mu).

The Amperex 12ax7 has nuclear capability in Odyssey. Well where does that leave the lower gain 12at7? I have here 3 different types of 12at7. See this article on all the different types. https://www.effectrode.com/knowledge-base/the-12at7-tube/

First to go into the amp is the Mullard PQ 6201. PQ I think means premium quality. Kevin Deal loves it. Sells like hot cakes. Now this is pretty amazing sound. So good it took my breath away. Gold pins adds to it's attractiveness. A pair cost me $200.

The other 2 are Siemens ECC81 and Philips Miniwatt ECC81. They will be assessed next. Now the 12at7 may be lower mu than the mighty 12ax7 but it is pretty strong ! Also 12at7 are very quiet which is a big plus.

This is a picture of my 12at7s.


As with all tube type, there is the holy grail of 12at7. It's the GEC A2900. This will cost you more than your wedding ring.... and naturally I don't have it.

Try the Brimar CV455 KB/FB (Footscray) and the RFT ECC81 (foil getter).

 

[OctavianH]

As with all tube type, there is the holy grail of 12at7. It's the GEC A2900. This will cost you more than your wedding ring.... and naturally I don't have it.

Well, depends on your wedding ring. Check here.

 

[UntilThen]

Try the Brimar CV455 KB/FB (Footscray) and the RFT ECC81 (foil getter).

Ah the Footscray. All this while I thought it's a 12au7 but it's a 12at7 equivalent. It will have to wait. Trying to get a GEC A2900.

Well, depends on your wedding ring. Check here.

Thanks Octa. I've written to .... let's see.

 

[UntilThen]

Try the Brimar CV455 KB/FB (Footscray) and the RFT ECC81 (foil getter).

Is this the RFT ECC81? https://www.ebay.com/itm/272601501162?hash=item3f7850cdea:g:p0QAAOSwYaNfwQw-

and where is the link to buy the Footscray CV455 again?

Thanks

 

[bcowen]

After a week of Amperex 12ax7 (100mu), it's time to explore the 12AT7 (60mu).

The Amperex 12ax7 has nuclear capability in Odyssey. Well where does that leave the lower gain 12at7? I have here 3 different types of 12at7. See this article on all the different types. https://www.effectrode.com/knowledge-base/the-12at7-tube/

First to go into the amp is the Mullard PQ 6201. PQ I think means premium quality. Kevin Deal loves it. Sells like hot cakes. Now this is pretty amazing sound. So good it took my breath away. Gold pins adds to it's attractiveness. A pair cost me $200.

The other 2 are Siemens ECC81 and Philips Miniwatt ECC81. They will be assessed next. Now the 12at7 may be lower mu than the mighty 12ax7 but it is pretty strong ! Also 12at7 are very quiet which is a big plus.

This is a picture of my 12at7s.


As with all tube type, there is the holy grail of 12at7. It's the GEC A2900. This will cost you more than your wedding ring.... and naturally I don't have it.

I'll second @jonathan c on the Brimar CV455. And I can heartily second the foil getter RFT in ECC82 clothing (but I don't have the ECC81). With either, just be sure to get the foil getter, as the round or halo getters were of later manufacture and aren't even on the same planet sonically.

To each his own with tubes of course, but I found the A2900 to be a rather gigantic disappointment. Pretty anemic in the bass and lacking meat on the bones in the midrange. I paid big bucks for a pair and fortunately didn't lose any money selling them off in very short order. Personally I'd rather have either the Footscray Brimar or the RFT even if the price was the same.

 

[bcowen]

Is this the RFT ECC81? https://www.ebay.com/itm/272601501162?hash=item3f7850cdea:g:p0QAAOSwYaNfwQw-

No. Round getter.

and where is the link to buy the Footscray CV455 again?

I don't see any CV455's listed at Pulse right now. But these are awesome too:

https://pulsetubestore.com/products...4-12at7-factory-tested-plug-play-ready-to-use

They also have a sqaure getter version of the CV4033 for more money, but I haven't tried that to see if it's worth the extra $$ over the round getter.