If you are connecting an HD Audio streamer device to your home network, you want to make sure that the patch cable you use is of outstanding quality and will not introduce any unwanted timing errors caused by crosstalk between cable pairs. You also want to ensure that the bandwidth capabilities of the cable are adequate for the data rates required for Hi Res Audio streaming and that insertion losses caused by poor contact quality and impedance matching are kept to a minimum.
Most ordinary patch cables are constructed to the CAT 5e standard and are only specified for a bandwidth up to 150 MHz. The Reference Ethernet cable is an over-specified Class I Category 8.1 patch cable with a bandwidth of 2000 MHz which supports 40G ethernet - this gives it a huge amount of headroom when used in an HD audio streamer application. It can therefore easily accomodate today’s hi-res PCM streams of 32 bit/384 kHz or PDM streams up to DSD512 and will be capable of even higher resolutions should they become available in the future.
The cable features low insertion-loss, gold plated, industrial grade ethernet plugs with 360 degree shielded die-cast zinc bodies and high torque cable glands to maintain low insertion loss. In addition, its four 24AWG 99.999% OFC copper twisted pairs have different twist rates to cut down on intra-pair crosstalk and to give increased noise immunity which contributes to ultra-low jitter performance. Low jitter or timing error performance of the cable is the main parameter which allows it to operate at speeds up to 40 Gb/s. A further refinement, only found on QED cables, is the inclusion of a bespoke ferrite-impregnated inner jacket designed to shield the high bit-rate signals from external high frequency noise which can contribute to loss of signal bandwidth. Each twisted pair is individually shielded and geometrically bound within a tight aluminium mylar wrap, this further contributes to the elimination of crosstalk within the cable and maintains the tight 100 ohm characteristic impedance demanded by the CAT 8 standard.
The cable is finished in an attractive pearl white PVC jacket to complement high quality hi-fi equipment.
Length
1m
2m
QED Reference Ethernet 運用了自家50年的音響研究經驗設計而成，用到德國 Telegärtner RJ45 插頭提供最準確、最穩定的傳送。非常適合高清音樂及影片串流播放，其頻寬最高能處理 32bit/384 kHz 和 DSD512 音樂檔案數據傳送。其 Ethernet 級別為 Cat.8.1 支援 40Gb/s 傳送，以高性能的表現，處理高清音頻信號，擁有足夠的空間來應對密集數據傳送。有效減少數字信號中的抖動或時基誤差可以使到音頻傳輸更清晰，應用於以太網之中也不例外。
Reference Ethernet 絕對是 QED 擁有 50 年設計和研究模擬和數碼音響線材經驗而成的一款發燒級網線。