Class D amp with Tube Preamp Combo?

Hi Bostonbean, with an input impedance of 50K Ohms on both RCA and XLR connectors, the Spectron Mus 3 Sig II should be quite easy to interface with almost any tube pre. My current favorite tubed line stages are the ARC Ref 3 and the VTL 6.5, but I have not tried them with the Spectron.

What, no class D bashing? Have we finally arrived?

IMO Jwarmbrand's suggestion is more to the point. With class D the question isn't so much tube or solid state it's getting as much off the grid as possible. My Nuforce SE's took on a much fuller and more quiet presentation when I replaced an upgraded A I 3A with my current battery powered pre.

Unfortunately the resolution and transparency offered by many class D designs is often misdiagnosed as sterile or forward. My system benefited greatly from a new metal clad conduit, dedicated AC line, and from mass loading the SE's casework with some DIY sandbags. Addressing the vibration and the AC should be seriously considered before applying the tube preamp band aid.

All my vacuum tubes have now migrated from the back end to the front. The output section of my ModWright/Denon player is tube driven as is my FM tuner. There is no substitution for the effect tubes can have on an audio system and I haven't heard any solid state or class D product that sounds like tubes. Likewise, I haven't heard a tube system that sounds like a well executed class D system.

I have heard noise at low listening levels from the four tube preamps I auditioned in my system. Not that big of a deal and the noise wasn't an issue at louder levels. I think there is a battery powered tube preamp, Dodd?

"What, no class D bashing? Have we finally arrived?"

Vicdamone, I've been there for a spell. . . as far as I am concerned class D is one more perfectly legitimate amplification technology, like everything else replete with the bad, the good. . . and the ugly. G.

"Addressing the vibration and the AC should be seriously considered before applying the tube preamp band aid"

Vicdamone i concur big time with your statement above. I'm not using sandbags but i am addressing vibrations also as well as AC and the improvements are very audible for sure.

Any one who bashes any gear is a fool. There is enough equipment out there for all to find enjoyment and as we all hear differently who cares what type of gear blows your skirt up. We are all in this for musical enjoyment i suspect and the way you get it done is your musical happiness business. I"ve had some interesting volleys with some bashers in the past dealing with gear. Hell its your ears and money listen to what pleases you.

Stltrains, Hear, hear and nice looking system you have.