It has been a while after my last post..  

All in one picture...  

I have a Generic 6FD7, its construction looks identical with my Tung-Sol 6FD7...

I got mine used for around $2300 for the CS300XS here in China..

got some info about the CS300F model http://www.my-fi.nl/LEBEN%20CS-300F%20www.My-Fi.nl.pdf

Quote:   mine is 220V..

Quote:   Mine was produced in the late 2010 and got the 1,3Kohm resisitor..soo i guess they just randomly install them?

Quote:   Quote:   There ya go...you can actually make them if you are willing to..

It's actually quite easy to change the resistors if you have soldering skills. Newer models have the 1Kohm or higher value resistor, Mine came with a 1,3Kohm resistor that is why it's under powered for my LCD. But when I changed it with a 270ohm resistor, Everything changes.    My guess will...

Quote:   Yeap...It's been change so that it does not humm with high Impedance headphones...

Quote:   Or a WEE and a 009? + Leben? That should be more than enough...

Quote:   Ohhh...i envy you SIR..!   so no more headphones for you anymore?

Quote:   Ahhh Your unit must be the one with either 1.4Kohm or 1.3Kohm headphone out resistor. Try listening to some older CS300XS with the 270ohm resistor, you will probably change your opinion. It's actually not a mod though the older CS300 series all have the 270ohm resistor in it, but...

Quote:   Where is the Harbeth's? The Leben looks really amazing there..What tubes do you use MT?