Gentlemen all the questions are answered in the video review, and perhaps if one hasn’t looked at that video review, there are conjectures happening. In summary:
- Roon nucleus server was the source and streamed directly to an Oppo UDP 205 via Roon RAAT lossless protocol.
- UDP-205 SPDIF coax was sent to the AVM 90 and HDMI sent to the AVM 60. Therefore any switching between the processors was instantaneous and no disparity within the source
- Both AVM 90 and AVM 60 processors were connected to a Little Bear XLR switcher, which allows connecting both processors to a single set of amplifiers and speakers.
- The switcher fed Benchmark AHB2 power amplifiers configured in bridged mono to Revel Ultima2 Salons. Respectively some of the best measuring power amps and reference full range speakers.
- All listening test were conducted without room correction engaged to mitigate any superiority the AVM 90 ARC GENESIS may have and no subs were used.
A separate virtual input was created as a pure pass-through of the digital signal.
- Both processors outputs were SPL level matched with their volume control to such precision that listeners could not tell when the switch was happening.
- Multiple listening contests were conducted. I had someone performing the switching with with me at the main listening position and without disclosing, which was which
- I conducted listening tests to three individuals across a couch so that there was both MLP and off axis listeners. The age range of the other listeners ranged from 24 to 62 years old
- Sometimes users were prompted before a switch was made. Other times users were not told a switch was happening and were asked to determine when, and if they perceived a switch.
- During those instances, the three individuals and I were able to discern and prefer the AVM 90 vs the 60. The listeners independently described the differences they heard in the same way.
In summary, if you believe that all processors and AVRs sound the same and there’s no difference in what you buy, then this is not the product for you.
If you are someone who values peak audio performance, appreciates well engineered products with upgraded audio circuitry, and values measurable benchmarks that are audible to a group of listeners, then I would strongly recommend you take the AVM 90 for a spin for yourself.