Which is the best matching speakers for PASS XA60?

Thank you sir for the advise. Actually my setup is Mark Levinson cd player (39) and Siltech cables and the pre
I am using the Placette custom made balanced RVC which is
not givng expected perfomence. Hence, Please suggest me
the good pre-amps too for this XA60.

Rabbani, are you asking about the XA60 or XA60.5? With the .5 I think you can use almost any speaker that is 88db or higher, with impedance profile being much less important than with the non .5 version. In the case of the non.5 version I think you need speakers that have more benign, smoother impedance curves and the higher nominal the better. I would not not think an RVC would be a great match with the low input impedance of the Pass amps, if you like the general sound of the Placette you might want to try the Placette Active. I used the Dodd Battery pre with the XA30.5 and that was a very good match due to the preamps low output impedance and like your Placette is also "off the grid".

... good pre-amps too for this XA60

Lamm LL2, Klyne 7