Which subwoofer pairs perfectly with Tannoy Stirling GR speakers?

Using a pair of subs will be much better.

thanks @toro3 there's a Rhythmik dealer in my city, will ask them to give me a demo!

thanks! thats helpful!

In my experience proper location, equalization and / or optimization provides a far more indistinguishable integration with the room and any speaker.

If this is your first subwoofer beware of manufacturer marketing pairing list as well as customer reviews that lack any one on one comparison.

You'll be integrating a subwoofer/s with your room and your speakers not your amplifier.  

I have a Rythmik F12G that’s pairs nicely with the Stirlings. The variable phase control and parametric equalization have been super beneficial. For my room and listening preferences I have this sub crossed at either 50 or 60 Hz.

https://www.rythmikaudio.com/F12G.html

Further information about Rythmik with manufacturer input can be viewed at AVS: