Jeff Rowland Pre with Pass Labs X350.5 or X600.5

Those impedances are reasonably close to the Pass.

Dave
Dcstep (System | Reviews | Threads | Answers)

How did you arrive at this conclusion?

My Pass has a balanced input impedance of 30,000 ohms (30K ohms). Do you consider this reasonably close to 80 ohms (the balanced output impedance of the Capri)?

A preamp's output impedance (Unbal or Bal) of less than 150 ohms going into a power amp's input impedance (Unbal or Bal) of 20,000 ohms is very, very acceptable & considered a good match.

Question is how do Rowland preamps sound with Pass power amps? Do the JRDG pre have any particular sonic signatures that manipulate the overall sonics?

Arupg asked:

"...Do the JRDG pre have any particular sonic signatures that manipulate the overall sonics?"

Speaking only to the Capri, there's no signature, IMHO. It's transparent, detailed, stress free, with solid lows and sweet, open highs. There's no etching of the highs, but neither are they rolled off. In contrast, my prior Conrad Johnson was "golden" and slightly darker in overall color. The Capri with acoustic bass you hear the air around the strings and the rosin on the bow, at the same time you hear the woody body of the bass.

So, I think that the Capri passes the sources onto the amp(s) with great accuracy, bottom to top.

Dave

Do the JRDG pre have any particular sonic signatures that manipulate the overall sonics?
Arupg (Threads | Answers)

Stereophile reviewed both the Synergy IIi and Coherence. The descriptions of their sound is fairly complete.

You might contact member "Raquel" directly for his thoughts about the Coherence II.

Thanks Tvad for pointing me towards Raquel for more info.