After years of requests from existing high-end DAC owners, the LUMIN team have taken the finest components from the flagship S1 model and developed them specifically for digital processing and output.

Using a new dedicated LUMIN U1 processor adds upsampling and downsampling for every supported format – all the way from 44.1kHz to DSD128 – providing maximum DAC compatibility and optimization.


Transport-only unit based on the award-winning LUMIN S1


  • 5 types of digital audio output including new USB
  • Includes DSD512 22.5Mhz 1-bit playback
  • PCM 44.1–768kHz 16–32-bit
  • 4 exceptionally low-phase-noise crystal clock oscillators
  • External dual-toroidal power supply
  • Resampling to every supported format up to DSD128 and PCM384kHz
  • Supports DoP (DSD over PCM) for Optical, Coaxial RCA, Coaxial BNC & AES/EUB SPDIF

Lumin U1 Network Transport with X1 Power Supply

  • U1 Specification

    DSD Support:
    Up to DSD512 22.5MHz, 1-bit

    PCM Support:
    Up to 768kHz, 16–32-bit, Stereo

    Upsampling rates & bit depths:

    DSD128 upsampling option for all files

    PCM 384kHz upsampling option for all files

    Digital Output Stage:

    DSD512 22.5MHz, 1-bit, Stereo
    PCM 44.1–768kHz, 16–32-bit, Stereo

    Optical, Coaxial RCA, Coaxial BNC & AES/EBU:
    DSD (DoP, DSD over PCM) 2.8MHz, 1-bit
    PCM 44.1kHz–192kHz, 16–24-bit

    Power Supply:
    External dual-toroidal
    Available in 240V and 110V versions

    Raw brushed aluminium or black anodised brushed aluminium
    350mm (W), 345mm (D), 60mm (H), 8kg

    100mm (W), 315mm (D), 55mm (H), 2kg

  • Specification for all LUMIN music streamers

    Streaming Protocol:
    UPnP AV protocol with audio streaming extension (OpenHome)
    Roon Ready
    Spotify Connect
    Gapless Playback
    On-Device Playlist

    App Features:
    Native support for TIDAL, MQA, Qobuz and TuneIn Radio.
    Tidal MQA icons to identify high-res music
    Qobuz high-res icons to identify high-res music
    Volume control
    High-resolution artwork
    Artwork caching
    Multiple tag handling
    Composer tag support
    Album-grouping in playlist
    Automatic internet links to artists/album/songs
    Saving and restoring of playlists (including Tidal and Qobuz)

    Supported Audio File Formats:

    DSD Lossless: DSF (DSD), DIFF (DSD), DoP (DSD)
    PCM Lossless: FLAC, Apple Lossless (ALAC), WAV, AIFF
    Compressed (lossy) Audio: MP3, AAC (in M4A container)

    Ethernet RJ45 network 1000Base-T
    USB storage, flash drive, USB hard disk (Single-partition FAT32, exFAT and NTFS only)

    Analogue Audio Outputs:
    XLR balanced, 4Vrms, pin 2 Hot
    RCA unbalanced, 2Vrms

    Supported Control Devices:
    All models of Apple iPad (v2 or later). iOS 8.0 or later required. Full Retina Display support.
    Android devices. Android 4.0 (Ice Cream Sandwich) or later required

    Leedh Processing lossless digital volume control
    Programme of Continuous Development – Firmware-upgradable for further features and enhancements