help me make sonos better

Greywolf, I'll bet that sounds great! Looks like an incredible DAC all the way around.

Meanwhile, on the baby-step side of the equation, I added the Monarchy DIP 48/96 upsampler to my system as Edgejazz encouraged, and the results are, essentially, that I need to send him a nice bottle of scotch.

The path is now Lossless files > Cullen-modded ZP90 outputting 96kHz > Speltz IC > Monarchy upsampler (which obviously isn't doing any upsampling) > Speltz IC > Cambridge DacMagic > Jolida 302brc > Rega R5s...and it's immediately, plug-n-play clearer. More resolved, just straight-up better, right out of the box. It's unequivocal.

I'll let everything burn in and then play with some A/B comparisons, feeding it a 48k signal from an unmodified ZP90 in case the Cullen mod is dispensable, but my immediate impression of this combination is very very favorable.

Anyone reading this and considering the DIP can also factor in that I not only have a very modest system, but that I'm blessed with neither the ears, aural memory, or adjectives that most of folks here do. I'm frankly better equipped to NOT hear subtle improvements, and I certainly wouldn't hesitate to say so if this was a hair-splitting refinement that required better gear or ears to discern. But it's a sledgehammer-level improvement. Very happy here!

Soundgasm, happy to hear you're enjoying the elevated sound, thanks for the feedback. Jameson, my any day sipper...LOL...toast to you! Take care.

I've had a chance to listen to many music selections over the past 3 weeks and I have to tell you that the Sonos ZP-90 with the Benchmark Dac1 USB is a very good combination. The jitter reduction in the benchmark really works and I'm very pleased with the sound. Good soundstage with very nice depth. Open and airy highs with good solid bass. I can listen for hours at a time with no fatigue. I just don't see a reason to purchase any additional mods for the ZP-90, the Benchmark cleans it up just like a reclocker mod. If anyone has further info, please let us know.

A side item on the Sonos ZP-90. Out of the box, it is setup in the software with the volume control active. This is OK if you are driving some powered speakers. However, not good at all in driving a DAC. Go into the computer software and select the ZonePlayer Settings. Select the ZP-90 and in its Settings, select the Line-Out tab. Set the Line Out to "Fixed". It's important to eliminate their volume control as it introduces distortion to the sound. Actually above about 75% volume, it over drives the DAC and the sound is miserable. In the "Fixed" position, the Sonos passes through the Digital Stream with no processing, giving the best possible results.

Now if we could get Sonos to upgrade their products to do 24 bit/96kHz Music files!

Paul

Paul - Glad to hear you are happy with the Benchmark. Your experience with the Sonos volume control is interesting. I use the volume control on my Sonos, and I haven't noticed any problems with it. I wonder what accounts for the difference.

Bryon... I used it initially as well and thought that at 100% it would have a gain of 1 and all is fine. However, above 75% I could hear distortion. It was overdriving the DAC. Also when set to Fixed the volume is at 60% - 70% of the variable mode. I called Sonos a few minutes ago and they also recommend the Fixed mode when going into a DAC.

I also have two of the Sonos S5 powered speakers and they are just fine with the volume control. Bought them for my wife. ;)

Paul