Anyone with W4S amps and preamp

I have read several reviews of the amps and preamp, but never together using balanced connections. Has anyone tried this or even heard it? Would also like to hear favorite "D" amps with favorite preamps.

I am using a Bel Canto Pre 3 that can be has for $950 used while my tube pre is being made.

It is wonderful sounding and would be the perfect upgrade for you.

Boy does this little unit sing!
I am using a Bel Canto Pre3 now and have paired it with Bel Canto a pair of M300s, the S300 and the S500. Also tried the PS Audio Trio A-100 and lastly a Seymour AV ICE Block 5001 with the Pre3. All of these setups were run with balanced connections. My least favorite was the S500 which is a surprise as that is the most expensive one in the bunch.
At this point I am not using class D amps. I picked up a Harman Kardon PA-2200 amp built in the mid to late 90s. After giving the amp a thorough cleaning I installed an IEC socket, rewired the A/C from the socket to the transformer, then rewired the output section with DHlabs cable and installed some Cardas binding posts I had on hand. Put the amp in just to see how it sounded and have had no desire to remove it. Warm, full sound, just a joy to listen to.
Grannyring and Timrhu-- Thanks for the suggestions on the Bel Canto Pre3...
No funds for upgrades yet :(

This is my 1st real system, so I have not had a chance to demo much equipment

Like the OP, I am curious to hear the W4S STP-pre synergy with the W4S amps

The passive section on my Adcom GFP-750 gets the most use.
So, the W4S STP seems like a natural upgrade to the Adcom.

I run the Adcom passive into a Marchand XM-44 -> Maggie MMG's and an Epik Valor sealed 15" sub.

HP/LP set at 60hz/24db really well in my small room and doesn't bother my neighbors in my duplex

I should get some pics taken and post my system sometime soon...
really enjoy learning and reading on the Agon forum