FYI, my TF 3 PRO uses USSR OTK 6H5C for power and Telefunten EF800 for signal (with Siemens EF80 as spares). The standard configurations for 3 PRO and higher versions are Chinese-made Nanjing 6H5C and Telefunten EF800. I am quite new to tube amps, having aquired the TF 3 PRO for just two days. But my adrenaline is surging as the listening experience is so unprecedent. IMO, Beyer T1 and HE500 are consummate with the TF 3 PRO.
Drooling over your gear! So classy in style!
Now I am looking for extra tubes to stock and roll for my TF 3 PRO. I find there are quite a lot of options for the 6H5C replacements (though some are unbearably pricey). Can anyone shed some light on replacements of the EF80? I find the options are quite limited.
Here I've just borrowed a few pictures of some hand-made bespoke amps for you to appreciate.
Finally, my glowing heater.
Edited by hificrazy - 12/30/12 at 9:55pm