DHT Linestage

[ToniM]

Hello all.

build up the first of 3 Linestages. This is the ebony wood version for my buddy Heinz. The concept was created one year ago and a lot of metal work and sourcing.
You can use 801/vt25/26/01a and a lot of other DHT`s with this stage because B+ and the filament volages are switchable.Sound is the best Ive ever heared its truely state of the art. Power supply uses 3 transformers every tube hve its own filament supply with LCL the B+ Supply use LCLCLC. Also use of ultrapath cap between cathode and interstage. The DHT is in the input followed by an 4,5:1 interstage followed by an 600Ohm TVC.

Here are a few photos of the linetage and supply

[ToniM]

Power  Supply

[ToniM]

Power supply inside

[ToniM]

Linestage inside before fitting the TVC`s

[ToniM]

Another view

[vt4c]

Hi ToniM,
   Excellent work....Love the shinny chrome chassis. I like the very neat layout too!

   May I know if it's WOT or cap-coupled line output? Thanks.

[ToniM]

Hello VT4c

thank you for kind words.The output is tvc coupled and have an very low output impedance. The idea for this amplifier is from a friend from Munich Thomas Mayer.Look for his website   www.vinylsavor.blogspot.com

[yeo]

hi toni

great stuff! very neat wiring. i couldn't wire so neat even if my life depends on it!

may i know which tvc are you using? plate choke?

how does it sound?

yeo

[ToniM]

Hi Yeo

I use the LL1668 Plate  from Lundahl (only filtering) and interstage coupling.The TVC is from Dave Slagle  (Intactaudio)The sound is state of the art better than any linestage I heared so far.

[yeo]

hi tony

great work there! now i'm inspired to build my own tube line stage again!

do you have a schematic?

yeo

[ToniM]

Hello Yeo

In this thread Thomas Mayer have posted his schematic


http://www.audioasylum.com/cgi/t.mpl?f=tubediy&m=178725

[vt4c]

Hi ToniM,
   Thanks for the info....If you don'd mind me asking; can you please kindly run through the design topology (filament bias?) and is the tube isolated and suspended away from the main chassis?

  Again...Beautiful work!

[ToniM]

Hello VT4c

I use cathode bias, and the tubes are suspendet about mircophonics.Look at the link I posted to Yeo and everything is clear. I bring further detalis if the suspension next week

regards Tony

[yeo]

hi tony

great stuff there! read that thread some time back but to see someone built it up here is awesome.

i have some 1h4g which i think i could use...

found a line out transformer too. too bad its dcr is only 250 ohm...

thx!

yeo