Originally Posted by Carl_Huff
Not to challenge you or 'nitpick' but I would be very, very surprised if the Trinnov does not sample rate convert internally to 24/96kHz. They have to do that or would end up supporting massive bodies of redundant code and that makes no sense. Furthermore there is no legitimate reason not sample rate convert as there is no loss in fidelity.
I'll settle it for you Carl: Due to the benefit of the enhanced processing power of PC over DSP, there is no sample rate conversion taking place in any of the Trinnov products.
I believe sample rate conversion, particularly ARSC - (asynchronous sample rate conversion) has a loss in fidelity, and this has been confirmed by clients in various installs with A/B comparisons. We are not alone in this conclusion. A quick look on the Internet regarding ARSC gave the following example quote from very highly regarded Grace Design regarding their philosophy:
"....While it is very easy (and economical) to provide “jitter free” sample clocks by routing the audio data through an ASRC (asynchronous sample rate converter), we believe that the convenience of these circuits does not outweigh the potential sonic degradation caused by additional signal processing. " http://www.gracedesign.com/about/design.html
My early experience comes from one of the most challenging areas of reproduction, minimalist direct to tracks recording. It's there where I learned the value of each element (or lack thereof) in the recording/reproducing chain, and this issue really comes to life. Here one relies on the purity of microphones, recorded direct to tracks, no mixing. The electronics in-between are relied on to convey subtle details in large orchestras to blues. It's in such recordings that every circuit detail matters and are clearly heard: nuances of the various microphone colorations, circuits, loudspeakers, rooms. One can hear the effects of a of changing a resistor or capacitor in the circuit. It's here that ARSC shows up like a form of jitter. It's also where I crossed paths with brilliant folks like Michael Grace of Grace Design.
Maybe someone wouldn't notice in their home theater, but I believe those of us participating in this group care about such nuances. We have lots of examples of Trinnov MC installs where we've removed various brands of processors (containing ARSCs) from the signal path with noticeable results.
Unlike typical HT installs, most Trinnov installations crossover as a dedicated Audiophile/Stereo listening environment. Tuning HT and Stereo rooms is no different for me then the critical tuning I perform with Trinnovs in mastering studios and the like. First step is always to insert the Trinnov with no loss in sonic resolution. Sometimes that means changing the converters or other particulars, but one can never really get past this first step if there is an ASRC inserted into the circuit, because, so far, we always hear it. Want to use your favorite DAC? Sure, one can do that (The Altitude has 16 AES channel outs, as well as Word Clock Out), but once you go through an ARSC, nothing is going to reverse that.
Bring on 3D audio at the highest level possible. Our time is now.