Ultimate 系列 RCA 訊號線

基礎線材（Gotham 11301）

品牌／產地​: Gotham, Cable Base made in Switzerland

型號／結構​: 11301 GAC-4/1 UltraPro, Star-Quad (4-core) design

線材直徑​: Φ8.0mm (Outer Diameter approx. 8.80mm)

顏色​：海軍藍

阻抗​: 110 Ohm

導體電阻​: <39 Ohm/km

屏蔽電阻​: <28 Ohm/km

電容量​: Conductor-Conductor: ≤50 nF/km; Conductor-Shield: ≤103 nF/km

測試電壓​: Conductor/Shield: 2000 V eff; Conductor/Conductor: 500 V eff

工作溫度： -5°C to +70°C

RCA 插頭（KLE）

1. KLE Copper Harmony RCA（銅版本）

• 材質：​ 99.999% high-purity oxygen-free copper positive/negative contacts, plated with high-purity thick silver.
  
• 效能：​ Conductivity reaches 101%.
  
• 聲音特性：​ Maintains the warmth and emotional richness of copper while offering improved transparency and texture.
  

2. KLE Pure Harmony RCA（純銀版本）

• 材質：​ Both signal and ground terminals utilize high-purity hard silver.
  
• 效能：​ Achieves 106% conductivity. Offers faster speed, a blacker background, and superior transparency.
  

3. KLE Absolute Harmony RCA（Super Silver 版本）

• 材質：​ Features 99.999% 5N pure silver for both signal and ground terminals.
  
• 旗艦級效能：​ Builds upon the Pure version with extended and tighter bass, greater soundstage depth, enhanced micro-detail retrieval, and improved dynamics for a more realistic and vivid presentation.

尺寸​: 13mm × 44mm (Total Length 47.5mm–50.5mm, varies by version)

支援的線材直徑​: Default: max. 9.5mm; With slim sleeve (sold separately): supports 4.5mm

建議磨合時間​: >125 hours

顏色／版本​

- 銅：黃色印字
- PURE（純銀）：粉紅色印字
- ABSOLUTE（Super Silver）：淺綠色印字

表面處理與外觀

The cable jacket is printed using environmentally friendly, water-based ink. As a characteristic of this sustainable process, minor printing imperfections (such as slight blurring or ink bleeding) may occasionally be present. It is important to note that these cosmetic variations do not affect the electrical performance or integrity​ of the cable. Gotham does not consider such minor aesthetic inconsistencies to be product defects.

Gotham Cables 品牌歷史

Since its founding in 1976, Gotham has been dedicated to the engineering of professional-grade audio cables. The brand's core philosophy is rooted in "technical correctness,"​ prioritizing signal integrity above all else. This commitment is exemplified by their renowned double-shielding technology, a design principle with origins in German broadcast engineering traditions. This legacy of quality and reliability has led to Gotham cables being the trusted choice for numerous renowned microphone manufacturers and professional studios worldwide.

精密製造流程

To ensure the highest quality and preserve the designed performance, each cable is meticulously hand-assembled by authorized distributors (such as the reputable Tiger Fu Audio Studio). The critical soldering process is performed using precision tools like JBC constant-temperature soldering stations. This controlled approach to soldering guarantees flawless, reliable connections that maintain the signal path's purity and ensure consistent, high-quality sound.

應用情境

Engineered for critical applications, this cable is ideally suited for:

• 專業錄音室：​ 對訊號品質有嚴格要求的環境。
  
• 高階音響系統：​ 從訊源到擴大機皆要求高傳真表現的系統。
  
• 長距離麥克風配線：​ Its superior shielding effectively rejects RF/EMI interference over extended lengths.
  
• 需要良好抗雜訊能力與低訊號損失的應用情境。