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#CONRAD JOHNSON CAV 50 REVIEW MAC#
Operating Temperature: 48-52° C (118-126° Fĭigital sources: Schiit Gungnir Gen 5 USB Multibit DAC, SOtM SMS-200 UltraNeo network bridge, Mac Mini Roon Core Server, Sonore OpticalModule fiber media convertor, UpTone Audio EtherREGEN Ethernet switch, UpTone Audio LPS-1.2 and Keces P3 linear power supplies.Īnalog source: Michell Gyro SE turntable, SME V tonearm, Koetsu Urushi Vermilion cartridge, Bob’s Devices Cinemag step-up transformer, Uni-Pro protractor Power regulation: Linear Technology LT3045 and LT3042 voltage regulators Specs & PricingĬircuitry: Fully differential clock circuitry, isolators, and flip-flopsĬlock system: Ultra-low jitter/phase noise Crystek CCHD-575 oscillator At only $640, it’s got to be of the biggest value propositions in all of high-end audio, and has my highest possible recommendation. And, in doing so, it provides a musical experience that’s every bit as engaging and compelling to listen to as my analog system. Mine has provided me with the convenience, access, and functionality of Roon with curation of content of Qobuz. If you have, or are looking to put together, a music-server-based digital streaming front end, and you need an Ethernet switch in your network, the EtherREGEN deserves serious consideration. In summary, I consider the UpTone Audio EtherREGEN to be both a breakthrough and a landmark audio product. And this is where EtherREGEN rushed in like the cavalry and saved the day, changing the audio experience from one that previously drove me from the room to one that became completely engaging, compelling, and beguiling. This additional overlay pushed things over the top for me, creating too much of a bad thing. When I understood this, it became clear why I couldn’t bear to listen to the system after I added the TP-Link Ethernet switch into the configuration: The digital nasties from it were overlaid onto those already present from the other upstream networking devices (router, FMC, and music server). Therefore, if your endpoint has a very good local clock, the overlay from upstream can be significantly greater than the local clock.” Most ‘residential’ network devices have very cheap oscillators with very high phase noise, so effects from this in the combined clock can be very strong. “What this clock phase-noise overlay looks like depends upon the clocks and circuits involved. The reason for this is explained in John Swenson’s White Paper for EtherREGEN referenced above: Every consumer-grade digital device with el-cheapo clocks (powered by those dastardly switch-mode power supplies) that we add to our streaming network is adding more clock phase noise, leakage current, and noise on the ground planes of our endpoints and DACs, thereby increasing threshold jitter and, concomitantly, timing errors. But, as we add more networking devices to take advantage of the convenience, functions, and features, there is a price to paid. I’ve learned that digital streaming, either via a music server or a streaming service (especially Roon), has clear advantages with respect to accessing and listening to digital content. As I mentioned in Listening Impressions, my journey with developing my digital streaming front end and the UpTone Audio EtherREGEN has been an interesting and informative one.