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usb Reclocker network bridge

LINK II & VOLT

Stack Audio is focused on the source. Introduce noise and distortion at the start of the playback process and it disrupts the enjoyment of the music. The LINK II has been built from the ground up to remove unwanted noise.

USB Network bridge/Reclocker

The LINK II is a digital audio bridge that accepts music files streamed from internet subscription services or music files you already own and links them to your hi-fi system. The LINK II is optimised for audio playback. Using advanced technologies designed to remove noise from the outset, avoiding the need for excessive filtering which can restrain sound quality. Replacing a noisy PC or laptop with the LINK II to stream your music files reveals a lot of hidden detail.

Super clean power

Stack Audio’s approach is two staged. The first stage is the VOLT – a separate external linear DC power supply. This removes background noise, revealing subtle details often masked by generic switch-mode power supplies. The second stage is an advanced, low noise, power supply stage inside the LINK.

Ultra low-noise clock

The clock inside a streamer is essentially where the music signal begins so accuracy is key. Instead of using a standard clock, the LINK II uses a discrete clock circuit designed with low phase noise within the audio band.

In the world of digital audio, multiple clocks running at different speeds cause noise and jitter problems. We typically hear this as an edgy or brittle quality to the sound. To avoid this, the LINK II uses an ultra-low phase noise oscillator powered by an exceptionally clean supply. The ethernet, USB and the PSU are synchronised to the master clock, resulting in one coherent and extremely accurate device. This ensures that the fluctuations of the switching circuit are in time with that of the audio clock, reducing noise.

Solid aluminium case

The LINK II is a pure digital system housed in a solid CNC machined aluminium case enclosed with EMI absorbing material. This ensures noise does not escape and enter the analogue domain nor does noise enter and affect the clock circuit.

Software

The LINK II is designed to be as easy to use as possible. You do not need to download new software or learn a new control app to make it work. You can continue to use your favourite and familiar software to control and send music to the LINK II.  The LINK II works as an endpoint for the following protocols/programs
  • Roon (Roon Ready certified) 60 day trial included
  • Audirvana
  • Squeezelite
  • UPnP/DLNA
  • Airplay® (Shairport-Sync )
  • Spotify® (Librespot)
  • HQPlayer 

Specifications

User Manual (PDF)

Audio Feature Summary

  • Power circuitry is synchronized to the USB audio clock
  • Ethernet input is synchronized to the USB audio clock
  • Multi-stage ultra-low noise linear regulated power circuit
  • USB audio optimized output provides jitter free audio layback
  • The advanced clock circuitry re-clocks any USB input

Streaming Protocols

  • Roon
  • Audirvana
  • Squeezelite
  • UPnP/DLNA
  • Airplay® (Shairport-Sync)
  • Spotify® (Librespot)
  • HQPlayer (coming soon)

Mechanical Feature Sumary

  • Machined from a solid billet of aluminum
  • Incorporates EMI absorbing material to remove internal EMI
  • The mass of the case dissipates air-borne vibration
  • Incorporates AVDC vibration trap

Supported Audio File Formats

  • Lossless: DSF (DSD), DIFF (DSD), DoP (DSD) DoP and Native DSD up to DSD 256
  • PCM Lossless: FLAC, Apple Lossless (ALAC), WAV, AIFF Compressed (lossy) Audio: MP3, AAC (in M4A container) MQA (only if DAC supports hardware unfolding) PCM up to 384 kHz /32 bits

Communication Protocols

  • Ethernet
  • USB
  • Wi-Fi
  • Bluetooth

Physical

  • Finish : Available in anodised silver or black
  • Dimensions: 174mm(W), 140mm (D), 25mm (H), 1kg (without external power supply)

Outputs

  • 1 x dedicated USB audio output
  • HDMI out (not i2s, or used)

Inputs

  • 2 x USB inputs (Future use)
  • 1 x USB B detox input
  • Ethernet input
  • 18v 1amp- 1.5amp DC input

How does your 60-day moneyback guarantee work?

You have 60 days to audition the isolators from the day they arrive. During this period, you can evaluate the product and decide whether to keep it or return it. Refunds will be processed within 5 business days of receiving a returned item. Please note that returns will be inspected, and any damages may result in a reduction of the refund value.
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