Which preamp to pair with Moon W5 amplifier?

If you can afford about $4k used, there is a sweet VAC Renaissance pre available right now.

I have a Sim Titan and the VAC Ren pre myself, and ran through 3 other pre's with very good-yet-similar results, but NOT like the Ren.

The Renaissance pre has a transformer-coupled output, just like the Supratek's, 1st Sounds and a few others. This design makes it very compatible with low-impedance solid-state amps like the Sim Moon series, and it also helps reduce hum and hiss. Where the VAC won-out over the other transformer-coupled models for me was features - Remote control (vol/mute/selector), 2 balanced ins/1 balanced out, Cinema bypass and a reasonably-sized, enclosed cabinet (compared to the Suprateks) to protect the tubes. It also has stunning build quality and an AMAZINGLY dynamic sound. The detail it dug out of my CD's is staggering.

As I said earlier, I have the Sim Titan, and never had ANY lack of the QUANTITY of bass, though it was not as tight and punchy as I wanted - UNTIL the VAC pre was added. It actually added even more depth and extension, while also firming up the bass that the Titan provided. I think this is a direct advantage of a tube pre with a transformer-coupled output design - it adds the tube mid-range qualities without sacrificing bass or treble extension, and the input impedance of the amp is far less critical.

That was after trying the Pass X2.5, Placette Active Linestage and a PSE HL-1 tube hybrid. They all seemed really good overall, but also just left the Sim with its standard bass characteristics - deep, sustained and sweet, but a just smidgen loose.

** Here's A Question for you all -

I have been wondering if, for the 2-channel listening and overall impact, would W-6 Monoblocks notably improve on what the Titan offers without changing the overall Sim 'flavor'? .....Or is it just an extra couple of power cords I have to buy.....

Any comments about the W-6's? PLEASE !?!?
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