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I own Bliss Hifi, a high-end audio boutique based in Minnesota. This Aurender W20SE music server is in on consignment from one of my local clients. It is the black finish with 4TB internal SSD storage. It is a single-owner unit in good condition (7/10) that has been well cared for, though it does show some wear on the top plate and front corners consistent with use in a dedicated system over time. Still, it presents beautifully from a few feet away and is in perfect working order. The owner has also kept their high resolution music library on the unit, consisting of many great albums across jazz and pop/rock.

The unit ships in its original box. Original paperwork and internal foam are not available. The unit will be packed securely in the original box with third-party foam to ensure safe transit.

The W20SE is the music server that other music servers are measured against. Aurender has been refining this platform since the original W20 launched in 2013, and the SE revision, introduced in 2019, addressed every meaningful area: SSD storage replacing spinning drives, a massively expanded 1TB cache, upgraded OCXO clocking, and a full linear power supply for the CPU board. But the real story is the LiFePO4 battery power supply feeding the audio circuits. It completely removes the audio board from the AC mains, and the difference is not academic. The background is genuinely, almost unnervingly silent, and everything that emerges from it has a purity and ease that AC-powered servers struggle to match. Through the OCXO-clocked AES/EBU outputs, the W20SE delivers a presentation that Robert Harley described as vaulting into another league when combined with its onboard PCM upsampling. The Conductor app is among the best control interfaces in high-end audio, and the overall user experience is polished and intuitive. If you are building or upgrading a reference digital front end and want a server that simply gets out of the way of the music, this is the one.

There are currently three Aurender units listed from the same client, along with several other pieces from this collection. Take a look through our preowned listings to see them all.

Happy to answer any questions. Thanks for your consideration.

Check my stellar feedback and buy with confidence. This listing includes free insured shipping across the CONUS. As this is a passthrough sale that I am brokering on behalf of my client, I prefer to accept payments via PayPal F&F, Venmo Gift, or personal check, but this also gives you the opportunity to attain this at my lowest possible price. Credit card payments are also possible for a 3.1% convenience charge.

More about the unit:

The Aurender W20SE is Aurender’s flagship battery-powered reference digital output network transport, succeeding the original W20 which held iconic status for eight years. Designed in South Korea, the W20SE is a purpose-built music server with no DAC, no CD drive, and no wireless capability. It is engineered to do one thing at the highest possible level: deliver a bit-perfect digital audio stream to your DAC. The audio circuitry is powered by a LiFePO4 (lithium iron phosphate) battery power supply that completely eliminates AC mains noise from the audio signal path, while a separate full linear power supply handles the CPU board. The internal architecture features extensive EMI/RFI shielding with thick aluminum-alloy partitions separating each subsystem. The 4TB internal SSD handles music file storage, while a dedicated 1TB SSD caching drive buffers all playback so that music is read from solid-state cache memory rather than directly from the storage drive. An FPGA-based All Digital Phase Locked Loop system with an Oven-Controlled Crystal Oscillator (OCXO) clock maintains jitter at negligible levels across all digital outputs. The W20SE supports hardware-based PCM upsampling (via FPGA, not software/CPU) from 44.1kHz or 48kHz to 2x, 4x, or 8x the original sample rate, up to 352.8kHz/384kHz on dual-wire AES/EBU. Digital outputs include dual AES/EBU (XLR), coaxial S/PDIF (BNC), optical (TosLink), and one dedicated, physically isolated USB 2.0 audio output. A word clock/master clock input (BNC) accepts 10MHz and 12.8MHz references for integration with external master clocks such as the Aurender MC20. The W20SE supports PCM up to 24-bit/384kHz and DSD up to DSD512 (output dependent), with a high-quality FPGA-based DSD-to-PCM conversion engine for use with non-DSD-capable outputs. Network connectivity is provided by a double-isolated Gigabit Ethernet port, with two USB 3.0 data ports for external storage. The unit supports Tidal, Qobuz, Spotify Connect, AirPlay, and Internet Radio, all managed through Aurender’s Conductor app (iPad, Android, smartphone). A Critical Listening Mode defeats the front panel display and all non-essential background computing for the lowest possible noise floor during playback. Aurender also offers remote support access for diagnostics and troubleshooting. Dimensions: 16.9 x 5.0 x 14.6 inches (430 x 127 x 370mm). Weight: 46.5 lbs.

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