信號線與電源線完全分離的革命性結構
一般 USB 線材在同一條線內同時配置數位信號線與匯流排供電的電源線。當信號線與電源線混在一起時，彼此產生的磁場與電場相互干擾，會導致訊號品質與音質大幅劣化。這正是以便利性為優先的 USB 線材在結構上的最大缺點。即使使用再高性能的導體、絕緣材或屏蔽設計，也無法避免信號線與電源線之間的相互干擾，因此難以實現真正優異的傳輸特性與音質表現。
R-AU1-SP／R-AU1-PL 採用 ACOUSTIC REVIVE 的實用新型專利結構，將信號線與電源線完全分離。兩者各自使用專屬的雙芯屏蔽結構線材，徹底消除相互干擾，實現無傳輸劣化、極高純度的聲音表現。
採用低介電率的氟系樹脂絕緣
在訊號傳輸特性中，影響程度甚至高於導體本身的關鍵因素，正是絕緣材。
一般工業用來衡量絕緣材性能的重要指標為「介電率」，數值越低，代表對電流流動的阻礙越小，傳輸性能越優異。目前市售多數 USB 線材仍使用 PVC（聚氯乙烯） 作為絕緣，其介電率高達 5.6；即使是高價音響用 USB 線，多半僅升級至 PE（聚乙烯），介電率也僅約 2.3～2.4。相較之下，氟系樹脂的介電率僅約 2.1，是目前絕緣材料中表現最優異的等級。採用氟系樹脂絕緣的 R-AU1-SP，因此能實現壓倒性的高速傳輸性能。
緩衝層採用天然絲綢，有效抑制靜電與振動
R-AU1-SP／R-AU1-PL 在線材的緩衝層中採用天然絲綢，兼具優異的防振效果，有效降低振動對傳輸的影響，同時抑制靜電的產生，進一步提升整體傳輸品質。
天然絲綢本身不易帶電，能有效防止靜電產生；
即使產生帶電，其電位為正（＋）極性，與多數絕緣樹脂材料容易產生的負（－）極性靜電相互抵消，進一步發揮靜電中和效果。
採用對音響頻段最有利的銅屏蔽結構
R-AU1-SP／R-AU1-PL 的屏蔽層選用對音樂製作與音樂重播最關鍵的「音響頻段」具備優異屏蔽特性的銅屏蔽。鋁或其他輕金屬屏蔽材料雖然在高頻電磁波抑制方面表現不錯，但在真正重要的音響頻段卻效果有限，且容易產生素材本身的音色癖性。相較之下，銅屏蔽不會帶來音染，能嚴密守護音響頻段，有效阻隔外來噪訊，實現高 S/N 比、純淨自然的音質表現。
Revolutionary Structure with Complete Separation of Signal and Power Lines
The Challenge with Standard USB Cables
Typical USB cables combine digital signal lines and power lines for bus power in a single cable. When signal and power lines are mixed, the magnetic and electric fields they generate can interfere with each other, significantly degrading signal quality and sound. This structural flaw is a major drawback of USB cables designed with convenience as a priority. Even with high-performance conductors, insulating materials, or shielding designs, interference between signal and power lines cannot be entirely avoided, making it difficult to achieve truly excellent transmission characteristics and sound performance.
ACOUSTIC REVIVE’s Innovative Solution
R-AU1-SP / R-AU1-PL utilizes ACOUSTIC REVIVE’s patented structure, completely separating signal lines from power lines. Each line uses a dedicated dual-core shielded cable to eliminate mutual interference, achieving high purity sound performance without transmission degradation.
Low Dielectric Constant Fluoropolymer Insulation
A key factor that influences signal transmission characteristics, even more than the conductor itself, is the insulating material. The important industrial measure for assessing the performance of insulating materials is the “dielectric constant.” A lower value indicates less obstruction to the flow of current and better transmission performance. Most commercially available USB cables still use PVC (polyvinyl chloride) as insulation, with a dielectric constant as high as 5.6. Even high-priced audio USB cables often upgrade only to PE (polyethylene), with a dielectric constant around 2.3 to 2.4. In contrast, fluoropolymer has a dielectric constant of about 2.1, making it the best-performing grade among insulating materials. The R-AU1-SP, with its fluoropolymer insulation, achieves overwhelming high-speed transmission performance.
Natural Silk Buffer Layer
The buffer layer of R-AU1-SP / R-AU1-PL incorporates natural silk, which effectively reduces vibration and static electricity. This minimizes the impact of vibrations on transmission while further enhancing overall transmission quality.
Natural silk is less likely to carry an electric charge, effectively preventing static buildup. Should it become charged, its positive (+) polarity can cancel out the negative (-) polarity static that most insulating resin materials easily generate, further enhancing static neutralization.
Copper Shielding for Optimal Audio Frequencies
The shielding layer of R-AU1-SP / R-AU1-PL uses copper, which provides excellent shielding characteristics for the critical “audio frequency range” essential for music production and playback. While aluminum or other lightweight metal shielding materials perform well in suppressing high-frequency electromagnetic waves, they are limited in the important audio frequency range and can introduce tonal coloration. In contrast, copper shielding does not add tonal coloration and effectively protects the audio frequency range, blocking external noise and achieving a high S/N ratio with pure and natural sound quality.
