[milosz]

Quote:

NAD also did some electrostatics. Very similar to the Micro Seiki, and similar on sound to the Stax SR5's.
 

 
NAD, eh?  That's interesting.  When were these on the market?

 

[DefQon]

1980's. At least that's what I remember from the top of my head from reading the operating manual and brochure that came with my pair.

 

[spritzer]

Quote:

From the interview we had with them last year, and reflecting Birgir's point all along, there's no magic bullet though: the size / weight are bound to go up if you want to increase the drive capability while ensuring stable operation.

I don't know the details on what Birgir plans to do to the 007t, but it seems along the line of pushing it further into class-A by increasing the idle current and the dissipated power at the same time? It may work better but the case wasn't designed to dissipate as much heat.

For Stax, the current amp they're working on does require new sinks / new chassis to fit in properly and dissipate the heat.

The differences in feedback topologies between 717 and 727 are a matter of taste and a designer choice and there does not seem to be one better than the other. When I asked them if they would be keen on providing the user a switch (like was done with the latest kgsshv version), they said no way it would happen.

Arnaud

 
That is indeed the problem, cost goes up exponentially as the current models eek out as much sound per dollar as is possible.  Then there is the huge issue of there not being any good parts available any more.  There are no tubes available that bridge the gap between the ECC99 and the EL34 in this role and high voltage sand it getting very thin on the ground. 

 

[Elysian]

Anyone know what the black tube amp is at the Stax area?
 
http://i90.photobucket.com/albums/k240/ofey_s/Mook-HeadFest/D1-65.jpg
http://i90.photobucket.com/albums/k240/ofey_s/Mook-HeadFest/D1-66.jpg
 
http://www.head-fi.org/t/675508/pictorial-mook-headphone-festival-singapore#post_9678412

 

[Radio_head]

There's a 115 page thread on it here.  Don't have time to wade through it but I'm willing to bet someone talks about it.

 

[Elysian]

Just did a quick search through the thread and people are referring to it as Stax tube amp, but I'm not sure if they're referring to the Stax amps or the black one.

 

[Radio_head]

Well... it sort of looks like it says Stax in that sort of beige color on the right there, maybe its a proto...

 

[arnaud]

That looks like a Carry 300SEi... Certainly, I have never seen a Stax amp in my life with 1/4in plug

 

[Elysian]

Hmm, I wonder if it was overflow from the vendor to their left. The second shot has the Stax placard on top. Maybe it was put there by mistake.
 
Unless the 300SEi can be used for just preamp functionality (behind one of the Stax amps), I'm not sure what relevance it would have for the Stax area.
 
Maybe it's being used with some sort of Energizer/WEE device?  I would imagine Stax would prefer to use their own amps.

 

[arnaud]

Well, you'll certainly never see that here. Isn't the distributor also selling dynamic cans? Or as you say, use the carry as a preamp and defeated the volume control in the stax amps that accomodate this (like the 727).

 

[rgs9200m]

Gee, I see a pair of Rudi's Chromas in the photo. I actually have those.

 

[arnaud]

There's another close up pic in the thread, definitely a 300SEI, with beautiful color. I wonder there's a wee hidden behind driving the sr009, the cable seems to go that way...

 

[autoteleology]

What exactly are those huge blocks that stand up behind the tubes in a tube amp?

 

[khaine1711]

Quote:

What exactly are those huge blocks that stand up behind the tubes in a tube amp?

Transformers.

 

[DefQon]

Chokes/output transformers along those lines.