[Elecraft] K2 Rev B PCB - Does it contain the side-tone mod?

[dw]

Hey Gang,
I read online yesterday that it may be that the K2 control PCB Rev-B
might have incorporated the side-tone audio filter somewhere in advance
of the LM380N chip, to produce a waveform closer to sine-wave.

Does anyone know if this is true?

Is there anyway of getting to look at a silk-screen pic for this board?

Thanks
Duane
N1BBR
-- 
 Bw_dw at fastmail.net