Entry Level Tube Preamp or Higher Quality Used Model?

I have a Modwright SWL 9.0 that has been upgraded with Modwright caps and a tubed power supply (very special unit) all in one chassis with remote! I would highly consider selling it ($1500). This is a amazing sounding pre amp with excellent tone and punchy low end, sweet effortless highs. it uses 2x5687’s NOS JAN and 1x5AR4 Mullard brown bottom (from Andys vintage tubes).

Hit me up for pics and more info.

P.S. this is RCA linestage only no phono no XLR connections.

Matt M

Used or new....better is better.  Used just tends to get you more better for the money. ;-)

I'm certainly overwhelmed with all o f the helpful answers. Thanks all!

The more I read about my particular power amplifier - the more I hear that it makes a big difference when you go balanced over a SE connection. 

It kind of puts me at an Audio Research model. I'm just a little shy about buying an older preamp and having it become a "project." For years I ran an old Mercedes as a daily driver. But in the end, the constant attention it required wore me down. I know this is a much simpler device... but there you have it. 

If I decide to go Audio Research, are there any models to shoot for or avoid? Also, I see that they seem to be re-capped (or not). How often does that need to be done and what should I expect to pay to have it done? That way if I find one that is in good shape otherwise but needs re-capping, I can figure that into the mix.  

If you want balanced connections and don’t need a phono preamp I recommend buying the Aesthetix Calypso. Unlike the Audio Research, and models from many other companies, the Aesthetix is and will continue to be serviced by Aexthetix. Instead of introducing a new model every year or so Aesthetix continues to improve their product and offer upgrades to current specifications if you want the upgrades.

+1 on the Calypso, though it would be helpful to know what amp you are using.