I currently own an LS5 MKIII and I have tried the original Sovtecs and Telefunken E88CC (6922).
In my set up, I found that the Sovtecs put the soundstage at the front of the speakers and I was surprised that the instruments were very sharp and focused. I was expecting less than this, to be honest.
The Telefunkens, on the other hand, added more air and depth. This put the soundstage between my back wall and the speaker.
Note also that I also using an ARC VT130se amp that was modified by Great Northern Sound, using GE 6550 power tubes and Siemens 7308 input tubes along with Coincident Super Eclipse speakers.
Tube rolling, although frustrating at times, makes a huge difference, in my opinion.
Steve
In my set up, I found that the Sovtecs put the soundstage at the front of the speakers and I was surprised that the instruments were very sharp and focused. I was expecting less than this, to be honest.
The Telefunkens, on the other hand, added more air and depth. This put the soundstage between my back wall and the speaker.
Note also that I also using an ARC VT130se amp that was modified by Great Northern Sound, using GE 6550 power tubes and Siemens 7308 input tubes along with Coincident Super Eclipse speakers.
Tube rolling, although frustrating at times, makes a huge difference, in my opinion.
Steve