Originally Posted by
topflightpro
I had PT SL 2.4, later updated to 2.4+. So, much older than the G3. My Quarq was also a second generation model, again, much older than the dFour. So, it's possible the technology has improved since I used it. (I also went through 3 Quarqs in 18 months, which is how I ended up on SRM, but that is another story.)
I have heard stories of older Quarqs. Have to say dFour has been completely bombproof. And half the time its calibration number is 69. There are no drawbacks!