Trying separates for the first time

Congrats Scott! Let us know how you like the sound.

What ever happened with the humming Coincident amp you had?

Scott,

I agree with Plato that pairing a good tube preamp with a solid-state amp is a good idea. Whenever I used this type of setup (VTL tube pre with an Aragon ss amp or the VTL with a class D amp)) it's sounded more dimensional and palpable, more like you're in the room with the musicians.

You may want to check to make sure the input impedance of the McCormack amp is about 10 times the output impedance of the CJ preamp; this is called impedance matching and is important for making sure the CJ's volume control use is optimized and for best performance.

Tim

You're right Noble100.
Only problem is a SS amp will pass DC from a blown tube and often take a speaker with it. Lost a nice pr of Rega ES-3's that way.

Thanks for the responses, the tube recommendations, and the guidance on the preamp matching. I did check the compatibility of the preamp and amp, and they should be a good match from what I can tell. Of course, the proof will be in the sound.

I hooked up the DNA 125 last night using the pre out on my simaudio, and the sound was very impressive - better soundstage, smoother and more detailed highs, greater ease to the sound. There was also a bit more body to instruments and voices. I can only imagine that the CJ preamp will take things even further (it should arrive tomorrow, so I'm clearing my schedule for a long weekend of listening :)).

The Coincident Dynamo was repaired by Coincident (the filter caps were the problem). I should be getting it back at some point soon. I'll try it with the CJ preamp and as a stand alone (it has a volume control) to see what combination works best. I think it will be perfect for a small office system/headphone listening.

I'll keep y'all posted.

Best,
Scott

Right you are, Schubert...

The line-level section has a single triode amplifi­er also direct coupled to a high-current output stage. These output buffer stages minimize the output impedance, making the Classic-2 compatible with nearly all installations, including those requiring long lengths of interconnect cable. DC plate voltages are supplied by a very low impedance discrete regulator, designed to prevent the power supply from imposing its own colorations on the audio signal. A regulated filament supply further isolates the unit from ac line voltage fluctuations

A clean signal, but be cautious of high voltage peaks; eg, Telarc 1812 Overture.