ok woke up this morning,, and you were on my mind and YOU were,,,couldn't resist humming that tune just now,,,anyway,, I figured out why the american DIY/tech geeks are wrong about jadis' Line stage design , so called << The Issues with that french design>> OK, the tech elimintaeda the 1st tube, which was a a 12AX7,,, now with that gone, he figured,,**oh now you can turn the gain up on the vol and have more resolution, more db level ** etc,,not sure what his ideas are/were,,anyway, Jadis ' Line Stage are famous for their gain. On any Jadis Line stage from my 20 yr old DPL to their falgship $50K line stage JA500, it only takes <<less than>> 1/4= 1/3 on the vol knob to have bountous SLAMM/db levels.
I mean mean your amp will ,,,,rock on,,,oh my soul...anyway,, with the 12AX7 out, now 3 12AU7's in, the sound is mushy/flat,,, oh yeah you can turn vol up more,,but all that jadis voicing is ,,gone.
The lone 12AX7, has a mu of 100, this circuit needs that 12AX&, to push the fq 's through the 2 12AU7's,, and in spite of all the popular opinions that the cd buffer 12AU7 stage is not needed, and a complete waste,, that the AUX for cd sounds <<so much better>> to my expierience in my system the cd buffer sounds superior , not by much, but in our rule of thumb,, << a nuance is a nuance>>
The cd buffer is in fact superior to the AUX,, Owners of the DPL have the old stock caps,, once they change the caps to Mundorf Silvergold EVO oil,, then they will hear the nuance come through... anyway, back to Linestage designs.. So what Cayin did with their Mark2, LS6 Line stage is employ 4 12AU7's.. with a pair of retifer tubes,,now you think,, well according to your theory, a pair of 12AU7's per channel, is noy going to offer enough mu to push the fq's, / going to sound mushy/flat,, well what cayin did, is add a <<true pure dual mono trans circuit>> NOW with a pair of trans, the fq's has that boost to drive the fq's through the circuit.,\
I've seen on YT a tech guy showing his work of having swaped out the caps in a CJ 10 line stage/preamp,, and had to turn vol control up <<significantly>> = leads to distortion,, The more you crank the vol control up, more mushy fq's/distortion you will pass through the circuit.
IMHO The cayin LS6 mark2, is the finest preamp under $2K.
No I have not heard PL's new line of Linestage amps,, which stat at $2K,, I did have their older Prologue model and found the sound stage to be <,weird>. Like spagettiED.
Cayin and PL made at Spark's labs,, designs are close, but NOT the same / one will sound different from the other lab.
As I say, I've not heard the new PL Linestage amps,, but my hunch is , if you are on a budget, the $1500 Cayin is the best Linesage made today.
Cayin will blow away Conrad Johnson's linestage/preamps.
Of course CJ's is 3X's ,, mabe 4X 's the price of the LS6 mark2.
I'd bet the Cayin LS6 gives Jadis' $$$$$$$$$ Linestagea run for their money.
With the cayin, at 1500, vs the Jadis LS,, you've got tons of leftover cash to take out the Cayin caps and employ Mundorf high value caps and also switch out Cayin'sTakman carbon Film resistors to Takman Metal Films.. and see which you prefer,,, I myself much prefer the metal,, the carbon are too <<smooth>> = lacks dynamics.
