Ayre owners and preamp options: seeking advice


I bought a new Ayre VX-5 twenty a while back and have it paired with the Ayre K-5xeMP pre.  Was contemplating updating my pre which is currently fed by a phono pre (Ayre) and a DAC, both balanced inputs.  Has anyone modded a k-5xemp with a few select parts and improved it?  Alternatively, has anyone added a tube pre to their Ayre amp?  Which ones mate well?  Lastly, upgrading to their new KX-5 twenty would be an obvious choice but I'm not yet ready to make that investment.  Thoughts?
jc4659
Ayre announced a new DAC at Munich - it has a 100W amp built in

may not be an upgrade for you

and here is something on a dealer's page:
http://ciamara.com/new-ayre-8-series-components-coming-fall/

I haven't seen anything on the 5 series
Now that new 8 series looks interesting.  I will also look at the codex specs again.  It has received a lot of positive reviews.  My current dac receives a USB input from my Mac Pro as well as an optical input from an older meridian CD player which I use as a transport.  I should try a newer dac  and see where that brings me.  If not a big change then I will very likely just get a new Ayre pre.  I really do love the Ayre stuff.  It's built well,  reliable and musical.  I'll probably die before it does.  thank you all for the helpful suggestions!

I am using a VAC Renaissance Mk3 pre with phono in front of my Ayre VX-5 Twenty with excellent results.
if your DAC is several years old, I'd definitely try another one - that technology is rapidly evolving

the Ayre integrated is 80 W/ch into 8 ohms

Ayrelock analog linear power supply

Double-Diamond amp circuit

"unexpected price" is TBD
Randy-11:  Agreed.  First thing on my list.

 Drrsutliff: if you are using a mc cartridge with yours, what is its output?  Can you hear tube rush at medium loud listening levels?