Solid state to tube

@ecpninja I've read some folks claim to have used your 8ohm speakers with some lower powered tube amps, however as mentioned by @dekay the room size and what volume levels / dynamic preferences you like to listen for can help narrow it down some. Both builders are fine. If do go all-tube and with a separate tube preamp, you can rotate your trusty ss amp back in once in a while.

Listening preferences and volume levels matter too, to help pick a nice fitting tube setup for your particular speakers. Also ask yourself if you plan to keep your speakers long-term. Tube amps can get some folks looking at new speakers all over again too once they hear it, heads up. 

@charles1dad "Probably due to the very simple circuit and high built quality"

With less in the signal path, sometimes simple sounds better too 👍

@ecpninja if you are more use to the type of drive your Meitner MTR-101 mono amps have now, and even though your speakers spec is 8ohm / 92db sensitivity, the room size and desired volume listening levels is a real factor to consider.  

Coming from your existing SS Mosfet amps, I could see why Will Vincent might lean you towards Mono amps instead of the ST70 stereo amp build he does.

If you go with Quicksilver and want more Transformer capability and drive, the Mono 60s, Monos 120s, or the latest QS Monos in order to run a wider array of output tubes ranging from low to higher power ranges, and different sound types.

@ecpninja, Reading there is no tube in your totaldac, and your plan to keep using your ss amplifer, seems to me you are in an ideal situation for a really good tube preamplifier if you want this type of sound.  What @yyman23 describes above was my experience too when I paired my own tube preamps with my former SS amps. 

You could try this for a good while and decide later if you still want to add tube amp(s) to your system.  May not be necessary, you might like this setup a lot. 

@ecpninja that's good.  I'd recommend following his advice him knowing the design and how different tubes respond.  Also good to see he recommended those particular rectifier tubes if you don't already have them installed now.  

@ecpninja So I bought the modwright 9.0 and hooked it up.

First impression. Wow!!

Nice!  Did it come with the factory supplied tubes only, or any extra tubes passed along by the prior owner to try as well?

• Modwright: "Tube Complement: (2) 5687 driver tubes (may also use 7044/6900/7119 and equivalents)."

Some options to explore more later if desired.