DAC as an upgrade

One other note about the Ohm Walsh speakers is that a single driver produces most of what you hear (save the very top end) and delivers the sound as a phase coherent line source (hence the name CLS).

However, just because sound is produced in a phase coherent manner doesn't mean it reaches your ears that way. That is where the sonic focusing exercise I described above comes in...to make sure that everyhting reaches your ears still in a phase coherent manner (like focusing a camera or projector).

Other more conventional, less omni-directional, speaker designs that also feature a good degree of phase coherency at the source in particular can benefit from a similar attention to these details, I believe.

The McCormack DAC 1 has caught my eye as a reasonable unit to try based on reviews and value.

Anybody know what the difference is between a "McCormack DAC 1" and "DAC 1 Deluxe"? How is the "DAC 1" deluxe better or different from a basic "DAC 1"?

here's the difference between DAC1 and DAC1 Deluxe:

The chassis is copper plated steel. Separate digital and analog boards - each with its own transformer - are used, along with five voltage regulators. A Crystal Semiconductor CS8412 "E" Version receiver and CS4328 DAC are used in the DAC-1. The CS4328 is an 18 bit system, which includes 8X oversampling digital interpolation followed by 64X oversampling, one-bit, delta-sigma modulation - a lot of technobabble that translates to killer sound. For $250, the standard DAC-1 can be sent back to McCormack Audio and upgraded to the Deluxe Edition which has Cardas Jacks, Caddock and Vishay resistors, some high speed, soft recovery diodes, different op-amps, and some FET current sources to push then further into Class-A operation. Our unit had these upgrades (installed before the unit was initially shipped to us), and we feel it was worth the expense.

To the extent that you may still be interested in exploring Dacs, I am using BelCanto2 for one Sonos unit and Apogee Minidacs for two other Sonos units. Had tried a Benchmark, but felt it was not better than the Apogee. I have to say that the Apogee, which is used in pro audio (like Benchmark and Lavry), is an outstanding dac and a great value (available for roughly $800 new at B&H Photo). I have not used them as outboard for my current CDP or DVP. I had a Pioneer DVP in my HT system, but swapped that out for a used Denon 3930ci modded by Dave Shultz at the Upgrade Company. I was about to buy a used Esoteric DV50, but took a risk here since other agoners said he can make any denon sound like a 5k cdp. Apparently he benchmarks his sound against higher Esoteric models (UX??). Mine is not even broken in yet but the SQ is amazing, detail, texture, wow! Just another avenue to explore. Cerrot, I'm in Seaford LI. Where are you?

Jeffkad,

Thanks for the additional info.

Ive researched both the Bel Canto and Benchmark DACs of late and both are leading contenders currently in my mind.

There is still not much I can truly fault with my stock Denon, though I'm sure I can do better or at least different in a constructive way.

I am still in the mindset that an outboard DAC could be a next logical step for me and a building block for the future. I'm also learning a lot in the process.