Vintage DD turntables. Are we living dangerously?

Question for all you vintage DD experts out there.
I have just acquired a Technics sl10 linear tracker which looks to be fully functional and in good shape.

My question is concerning the RCA out.
It looks like it has a built in phono amp as the little button next to the RCA outs says mm/mc.
Does this mean it cannot be used through a phono amp as there does not appear to be a bypass to this , just choice of mm or mc.
Thank you

I definitely made things worst for my self.
and probably added more to a repair bill for moving those pots.
I hear that calibration cost $1000 for this QL-10? and I’m guessing that doesn’t include redoing the caps??
i wanted to fix it since it was my uncles.
worst come to worst, can I get a ql7 platter and still use my plinth and arm?
Thanks everyone for the responses.

It looks like it has a built in phono amp as the little button next to the RCA outs says mm/mc.
Does this mean it cannot be used through a phono amp as there does not appear to be a bypass to this , just choice of mm or mc.

I think it's only a gain-stage for the MC to boost the low output — there's no RIAA eq. So it can go into your phono preamp.

Pablo, I don't know where you "heard" that calibration of a QL-10 would necessarily cost $1000.  I believe that some time ago on this thread, JP Jones remarked that he could not hope to repair a malfunctioning unit for less than $1000.  That's a far cry from saying that it takes a kilobuck just to do calibration.  If the unit is functioning properly, a knowledgeable person, e.g., JP, could probably do the calibration for much less cost.  When the TT-101 is "broken", it is a real can of worms, which made JP's off the cuff estimate of $1000 seem fairly reasonable.  JP can comment if I am way off base, or not.

Lewm. Yes the 701 has the EDS-1000 brushless coreless motor.

The hall-effect electronic drive motor operates independently of AC line frequency and voltage fluctuations, so the 701 platter speed never fluctuates. An entirely different kind of motor, designed expressly for the 701, and a very innovative approach to the problem of resonance. Instead of the familiar, high speed AC motor, the 701 has an all electronic, low speed motor, with feedback-controlled speed precision. Because this motor rotates at the record speed, 33 1/3 or 45rpm, the need for speed reduction systems such as friction idler or rim belt is eliminated. Instead, the platter is rotated directly by the motor, and the record spindle is the top of the motor shaft. The 701 motor is so quiet and free from vibration that it does not require any isolation mounting, but is mounted directly to the chassis.

ORIGINAL DUAL 701 FACTORY SPECIFICATIONS:

Motor: Electronically Servo Driven
Wow and flutter: < 0.03%
Rumble: Unweighted: > 50dB; Weighted: > 70d
https://www.lencoheaven.net/forum/index.php?topic=28237.msg380130#msg380130
http://unepassionaudiophile.fr/platine-base-dual-eds-1000/
https://www.vinylengine.com/library/dual/701.shtmlhttps://www.vintageshifi.com/repertoire-pdf/Dual.php