How to burn in new WBTs on a phono stage?

Hi Slava: use Albert's cliplead method, but build in your own voltage divider network to prevent overdriving the phono stage inputs.
Divide the typical (tuner or CDP) ~1 volt line-output level down to ~100mV via a 10:1 ladder resistor divider. Use resistance values of 10K-ohm + 1k-ohm in series. Fabricate your connecting wiring such that the whole 11k terminates across the (tuner or CDP) output signal from + to shield. Then tap your divided network output voltage across the 1k resistor only, this signal driving your phono stage input. The grounds are common to both input & output signal.
If this doesn't make sense, drop me an email & I'll explain it via phone call, or send you a fax sketch of the circuit; it's actually quite simple.

If you guys would follow the link I provided, you will see that Granite audio has already reduced the level of this break in CD to match a typical phono cartridge.

That makes this disc ready to use, except for the inexpensive Radio Shack cables I mentioned that would allow driving the signal through the cartridge clips rather than RCA input on the phono stage.

ok then for the CDP - he's asking about a tuner though...
Sorry Albert I obviously didn't follow your hyperlink; thanks for pointing that out as others may be interested :-)
best rgds, bb

Thanks a lot guys.