"D" amps, general discussion who's 1 and why?

Jswarncke, I auditioned Cardas Golden Reference, and Jenna Labs over the same long weekend. At the time I was using Speltz Anti-Cable. The Cardas was the worst sounding of the two visitors. The Jenna less so. They both exhibit a great deal of hiss. That is the bleeding into the signal charges stored by the insulation.

On my class D system, this was an easy read.

Hearing what great results folks I know in Europe using thin ribbons insulated in Teflon, I decided to meld the two cable types, Anti-Cable and the ribbon. I knew I didn't want the insulation.

Yes, it is cheap. Try it. BTW great room!

Dcstep, pre-amp I'm currently using is a Audio Research Ref3.

What specifically is the Power Factor Correction you are referring to.

Muralman1, you said:

"Ghostrider45, I use the Quantum theory because it fits. My speaker cables are extremely thin ribbons. The music signal in all it's fruition slips through without inhibition. We are talking about the very small."

Cables are many orders of magnitude too large to directly exhibit quantum effects. You need to get into the subatomic realm for that.

I don't doubt that you're getting good results, but I believe many of us are also getting great sound through different paths. We don't need to mis-apply real science or invent pseudoscience to explain our successes (and failures).

It's all about good engineering and open minds.

Enjoy the music!

Ok, the AR Ref3 will be a good match for 501s. You might read Guidocorona's review of the Rowland Capri, where he moved from the Ref3.

PFC is an interface with the mains that Rowland uses to present an even load to the mains and convert the AC line to 380 Volt DC for the amps. It's designed for certain recent Rowland models, including the 501s. It's built into the 312 and the Continuum 500, but can be had as an add-on to the most other current Rowland products. (The PFC units that Rowland uses were originally developed for commercial cell-tower equipment by cell phone companies).

You need to talk some directly with Guido. I have no direct Ref3 experience, but he can discuss the pros and cons of moving away from the Ref3 to Rowland, since he made that move it.

Dave

Cardas Golden Ref works well with Rowland, giving no "hiss". I don't use it, but I've heard it in Rowland systems a lot. There could be a number of reasons for the differences noted. For instance, not all Class D has managed RFI and EMI as carefully as Rowland and some others. Chassis design for optimal isolation and ground management is critical with Class D.

Dave