![]() It also allows for the control of volume in the digital domain, sports a sophisticated search function, allows for high-resolution artwork from one's sources and artwork caching. On the separately downloaded (but free) smart application, the unit supports both TIDAL and Qobuz icons to indicate high-resolution programming. ![]() The U1 has full support for MQA from TIDAL, Qobuz, and Tune-in Radio. The unit is Roon Ready and supports TIDAL, can connect directly to Spotify, supports Apple AirPlay, gapless playback as well as the on-device playlist. Since the Lumin U1 is a music transport, it naturally must conform to and support the major protocols available to today's “digital audiophiles.” These include the UPnP A/V protocol with the streaming extension. Finally there is a circular 7-pin connector for the DC umbilical cable from the PSU. These are followed by a Cannon/XLR AES/EBU output. The ouputs, ostensibly to a DAC, consist of two Type “A” USB connectors, a Toslink SPDIF, a gold-played RCA coaxial SPDIF, and a BNC coaxial SPDIF. Starting from the left, we have a small reset button, then for the input to the unit, an RJ45 jack for CAT 5 or CAT 6 Ethernet cable, then a gold-plated “earth” (ground) post. Aside from that the unit is very well laid out in back. The rear panel of the Lumin is rather inexplicably recessed a good 2 inches (55mm) making it unnecessarily difficult to get to when installing the U1 into one's system. The enclosure measures 350mm (13.7 inches) W X 345mm (3.16 inches) D X 60mm (2.37 inches) H, and weighs in a hefty 8 Kg (17.64 pounds). There are no controls on the front panel of the U1. The main unit or “transport” as Lumin calls it, is characterized as a “monolith-like” enclosure with an elegantly curved front and a recessed cutout in the center for a vacuum fluorescent display. The back contains but a round multi-pin connector for the umbilical to the main unit. There is but a single button on the front which is illuminated to show that the unit is switched on. The PSU measures 100mm (4 inches) W X 315mm (12.4 inches) D X 55mm (2 inches) H and weighs 2 Kg (4.4 pounds). The PSU contains two toroidal power transformers. Lumin believes that separating the power from the signal circuitry results in better audio performance. Our review sample is black.Ī separate power supply unit is unusual these days and requires an umbilical cord to connect to the main transport unit. Both units are available in either a brushed silver aluminum finish or a black brushed aluminum finish. The U1 comes in two units: The main “Transport” and a separate PSU (Power Supply Unit). Lumin also has a pair of power amplifiers in its “stable” as well as a Music Library Storage solution and a Smart Application which allows the user of the transports and players to completely control them form a tablet or smart phone running either the Apple iOS or Google's Android OS. The U1 joins a growing lineup of high-end products from this Chinese-based company that includes a line of full “Network Players” that contain a Network Transport as well as a built-in DAC. It is compatible with all the major services and formats including PCM from 44.1 KHz sampling rate all the way to 768 KHz and bit depths from 16 to 32-bit and DSD 512 to 22.5. Lumin advertises the U1 as a “Network Transport” for those audiophiles who already have a DAC with which they are satisfied.
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