Thiel 1.6 - bass

Hi, I love my Thiel 1.6, including it's tight clean bass, but I am wondering if there are ways to effectively extend the bass even lower. Have any of you effectively matched a good sub to the Thiel 1.6? Or, have you found an amp that particularly emphasises the the bass?

I'm using Plinius 8200 mk II currently. It's quite a good match. (my friend tried a First Sound preamp with pass amp or CJ 11a - awesome!).

Ok, any ideas for bass?

While we are at it, what amp have you heard that works well with Thiel 1.6?

Thanks
Art