[Andrew Rieger]

http://wallofsound.ca/audioreviews/...8300r-is-this-the-worlds-best-1000-amplifier/

I guess we are in for a treat!

I sold TU-8300 in 2010. I knew this amp quite well.
The new 300B amp has a lot more improvements from its predecessor (TU-8300R).[/QUOTE]

Hey Victor, do you think this will be a better headphone amp than the 8200DX?

 

[Hifi Boy]

For double the price, it damn well be!

 

[Hifi Boy]

Someone pls delete this.

 

[vkung]

I sold TU-8300 in 2010. I knew this amp quite well.
The new 300B amp has a lot more improvements from its predecessor (TU-8300R).

Hey Victor, do you think this will be a better headphone amp than the 8200DX?

 

[vkung]

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[vkung]

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[vkung]

They are different
The Tube set : 12AU7 X 2 + !2aX7 + 300B x 2
Also you can upgrade the OPT

 

[vkung]

For double the price, it damn well be!

6L6GC is $20 each
300B is 5 times more..
Also the OPT and power Transformer are double the size and weight..

 

[Hifi Boy]

Wow, must say it looks really nice.

 

[Dimu]

I like the look of this new amp very much. Looks like there is room for pot upgrade too.

In other news- looks like NOS tube supply is getting much tighter. Compared to a year ago availability of good stuff is much diminished.

 

[Dimu]

Finally got time to work on fitting the large power transformer so that case can be closed. Also decided to move away from case cooling for mosfets and added passive air cooling instead.

 

[Dimu]

For the first time I can use big tubes with the amp case closed. TT21 beats Cossor 807 for sure- no contest! Of course both driven by E80CC. Sweet!!!

 

[Dimu]

Hello everyone, My name is sunnee and it's been 26 hrs since I rolled my last tube.

What sunnee said

Swapped GEC TT-21 for GE 6550. Then 26 hours later played with Mullard EL34 and Telefunken EL12 spez and left EL12 in the amp for now. Very enjoyable sound. Tubes were made in Berlin in 1960. Wondering when I get bored and start rolling again

 

[Dimu]

Swapped my Dutch E80CC for Siemens E80CC. These tubes are weird- they clearly say Made in Germany and carry Bundeswehr falcon logo together with delta code indicating Dutch origin. Military boxes indicate 1974 as the year they were packaged. Don't hear any difference with Dutch E80CC and test parameters are very consistent between these Siemens tubes and all other E80CC I have tested. I still believe E80CC is the main improvement that can be made to this amp- they drive all output tubes beautifully.

 

[sunneebear]

@Dimu
I swore off rolling because it was draining my wallet and I've learn to sit back and enjoy what I have. I do not appreciate you shoving your tube rolling pics in my face.
Actually I pretty easy. I even find the stocks enjoyable.