[Frihed89]

I have seen and heard the ZDT (at RMAF 2009), but I have not seen the inside. I don't have one.
 
On the outside I see 1 (just one) x 12AX7 and 2 x 6C33C and two covered OPTs. 
 
It must be SS rectified, but i am more interested in guessing the input and gain stage typologies: what lies between the input RCAs and the 12AX7 and between the 12AX7 and those output tubes.  The 6C33C has very low plate voltage and an enormous mu. 
 
Does anybody know?
 
 
OK, then guess.
 
Thanks,
 
Mac

 

[JB197]

Hi, I don't know much about the ZDT, but a 6C33 has a mu of about 2.5.

 

[Frihed89]

For those interested there are some pictures posted at:
 
http://www.head-fi.org/forum/thread/434010/eddie-current-zana-deux-transformer-appreciation-thread-aka-zdt/45
 
courtesy of another member.
 
compare, not the circuit, but the construction to the Balancing Act pics show at
 
http://www.head-fi.org/forum/thread/407413/eddie-current-balancing-act/510
 
courtesy of yet another member.