{"id":18289,"date":"2023-04-03T19:06:31","date_gmt":"2023-04-03T19:06:31","guid":{"rendered":"https:\/\/audiocentras.lt\/produktas\/lumin-u2-network-music-transport\/"},"modified":"2026-09-29T12:56:54","modified_gmt":"2026-09-29T12:56:54","slug":"lumin-u2-network-music-transport","status":"publish","type":"product","link":"https:\/\/audiocentras.lt\/en\/produktas\/lumin-u2-network-music-transport\/","title":{"rendered":"Lumin U2 Network Music Transport"},"content":{"rendered":"

Lumin U2 Network Music Transport<\/strong> sends music from your network or connected storage to an audio system with a digital input. As a transport, it provides digital outputs. The main connection decision is whether to use its dedicated USB audio output or one of its optical, coaxial or AES\/EBU outputs. That choice determines which audio formats and resolutions can be sent to the next component.<\/p>\n

Chassis and power supply<\/h2>\n

The U2 has a chassis made from CNC machined aluminium panels<\/strong>. Its surface is less prone to showing fingerprints and is easier to clean. It is available in black anodised aluminium or natural anodised aluminium. At 350 mm wide and 350 mm deep, it needs shelf space in both directions; allow room behind it for your cables as well.<\/p>\n

Inside the unit is a toroidal linear power supply<\/strong> with a low noise rectifier, a linear regulator and two stage voltage regulators. Four quartz clock oscillators have low phase noise. These components are built into the U2, so you do not need to select a separate external power supply to operate it.<\/p>\n

Two network connections<\/h2>\n

You can connect the U2 to a network through RJ45<\/strong> or gigabit SFP<\/strong>. Both connections can operate at the same time. For example, RJ45 can connect to a router while SFP connects to network storage. This dual network arrangement includes an integrated network switch. Depending on the switch and cable you use, the SFP connection may require an adapter. Check that part of the connection before planning the installation.<\/p>\n

Of the U2\u2019s three USB ports, two are intended for connected storage and accessories. The third has a separate purpose: it is a dedicated, directly coupled, low noise digital audio output<\/strong>. When connecting a storage device and a converter, take care to use the appropriate USB port for each.<\/p>\n

Choosing an audio output<\/h2>\n

The dedicated USB audio output is for a system with a digital to analogue converter that accepts USB audio. It supports native DSD up to DSD512 and stereo PCM up to 768 kHz. Those upper limits describe the USB audio output specifically; they do not apply to every digital output on the U2.<\/p>\n

Optical, coaxial RCA, coaxial BNC and AES\/EBU outputs<\/strong> give you other ways to match the U2 to an available digital input. On these outputs, PCM is limited to 192 kHz, while DSD is carried as DoP at 2.8 MHz. If you plan to connect an amplifier or home cinema receiver, start by checking which digital inputs it has and which output you intend to use. The U2 cannot feed an analogue line input directly; a digital to analogue converter is needed in that signal path.<\/p>\n

Playback and control<\/h2>\n

The U2 plays DSD, FLAC and WAV<\/strong> files. Its overall playback support reaches DSD512 or stereo PCM at up to 768 kHz, but the selected output sets the final limit for transmission to your system. Upsampling is available for all files, with a choice of DSD256 or PCM up to 384 kHz. This lets you choose processing with the formats accepted by your connected converter in mind.<\/p>\n

Control is provided through the LUMIN app<\/strong>. The U2 also includes Leedh Processing<\/strong> lossless volume control. If your amplifier provides volume control too, decide during setup which device you will use for everyday adjustments. A consistent choice makes it easier to operate the system without managing two separate volume controls.<\/p>\n

Where it fits in your system<\/h2>\n

In a stereo system, the U2 serves as a digital music source ahead of a converter or an amplifier with a suitable digital input. In a home cinema system, it can connect to a receiver with a corresponding input. Choose the connection and audio format together: USB offers the wider stated PCM range and native DSD capability, while the optical, coaxial and AES\/EBU outputs are useful when those are the digital inputs available on your equipment.<\/p>\n

Technical specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Type<\/th>\nNetwork music transport; digital audio outputs<\/td>\n<\/tr>\n
Chassis<\/th>\nCNC machined aluminium panels; surface less prone to fingerprints and easier to clean<\/td>\n<\/tr>\n
Finish<\/th>\nBlack anodised or natural anodised aluminium<\/td>\n<\/tr>\n
Power supply<\/th>\nInternal toroidal linear power supply; low noise rectifier, linear regulator and two stage voltage regulators<\/td>\n<\/tr>\n
Clock oscillators<\/th>\nFour low phase noise quartz oscillators<\/td>\n<\/tr>\n
Network connections<\/th>\nRJ45 and gigabit SFP; can operate simultaneously; integrated network switch<\/td>\n<\/tr>\n
USB ports<\/th>\nThree: one dedicated, directly coupled, low noise audio output; two for storage and accessories<\/td>\n<\/tr>\n
USB audio output<\/th>\nNative DSD up to DSD512; stereo PCM 44.1-768 kHz, 16-32 bit<\/td>\n<\/tr>\n
Other digital outputs<\/th>\nOptical, coaxial RCA, coaxial BNC and AES\/EBU<\/td>\n<\/tr>\n
Formats on other outputs<\/th>\nPCM 44.1-192 kHz, 16-24 bit; DSD over PCM (DoP) at 2.8 MHz, 1 bit<\/td>\n<\/tr>\n
Playback support<\/th>\nDSD up to DSD512, 22.5 MHz, 1 bit; stereo PCM up to 768 kHz, 16-32 bit; DSD, FLAC and WAV files<\/td>\n<\/tr>\n
Upsampling<\/th>\nChoice of DSD256 or PCM up to 384 kHz for all files<\/td>\n<\/tr>\n
Control<\/th>\nLUMIN app; Leedh Processing lossless volume control<\/td>\n<\/tr>\n
Dimensions<\/th>\n350 \u00d7 350 \u00d7 60.5 mm (width \u00d7 depth \u00d7 height)<\/td>\n<\/tr>\n
Weight<\/th>\n6 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

FAQ<\/h2>\n

Can I connect it directly to an amplifier?<\/h3>\n

Yes, if the amplifier has a digital input that matches one of the U2\u2019s outputs. If it has only analogue line inputs, you will need a digital to analogue converter between the U2 and the amplifier.<\/p>\n

When should I choose the USB audio output?<\/h3>\n

Choose it when your connected converter accepts USB audio and you want to use the U2\u2019s wider stated PCM range or native DSD range. The USB ports intended for files and accessories serve a different purpose.<\/p>\n

What should I check before connecting SFP?<\/h3>\n

Check whether an adapter is required and whether it is compatible with the switch and cable you are using.<\/p>\n

Do the optical and coaxial outputs carry DSD512?<\/h3>\n

No. Their stated DSD transmission is DSD over PCM at 2.8 MHz. Native DSD512 transmission is specified for the dedicated USB audio output.<\/p>\n

How can I add the U2 to a home cinema system?<\/h3>\n

Connect it to a digital input on your home cinema receiver that matches your chosen U2 output. Consider that output\u2019s PCM and DSD limits before selecting the connection.<\/p>\n

How much shelf space does it need?<\/h3>\n

Allow at least 350 mm of width and 350 mm of depth, plus space for connections at the rear. Take its 6 kg weight into account when choosing a shelf.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Lumin U2 is a network music transport for a system with a digital audio input. Its dedicated USB audio output supports a wider PCM range and native DSD range than its other outputs. Optical, coaxial and AES\/EBU connections let you choose an output to suit your converter or amplifier. RJ45 and SFP network connections can operate simultaneously, for example with a router and network storage.<\/p>\n","protected":false},"featured_media":18256,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_members_access_role":[],"_members_access_error":""},"product_brand":[],"product_cat":[431,122],"product_tag":[1221,324,1595,1596,1594,854],"class_list":["post-18289","product","type-product","status-publish","has-post-thumbnail","product_cat-home-appliances","product_cat-media-grotuvai","product_tag-digital-audio","product_tag-lumin","product_tag-network-music-transport","product_tag-sfp","product_tag-u2","product_tag-usb-audio","first","instock","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"\nLumin U2 Network Music Transport - Dedicated USB Output<\/title>\n<meta name=\"description\" content=\"Explore the Lumin U2 network music transport, its dedicated USB audio output and dual network connections.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/audiocentras.lt\/en\/produktas\/lumin-u2-network-music-transport\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lumin U2 Network Music Transport\" \/>\n<meta property=\"og:description\" content=\"Explore the Lumin U2 network music transport, its dedicated USB audio output and dual network connections.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/audiocentras.lt\/en\/produktas\/lumin-u2-network-music-transport\/\" \/>\n<meta property=\"og:site_name\" content=\"audio centras\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Audiocentras\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-29T12:56:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/audiocentras.lt\/wp-content\/uploads\/2026\/09\/lumin-u2-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"920\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/audiocentras.lt\\\/en\\\/produktas\\\/lumin-u2-network-music-transport\\\/\",\"url\":\"https:\\\/\\\/audiocentras.lt\\\/en\\\/produktas\\\/lumin-u2-network-music-transport\\\/\",\"name\":\"Lumin U2 Network Music Transport - 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