Ultimate Series RCA Cable

Cable Base (Gotham 11301)

Brand / Origin​: Gotham, Cable Base made in Switzerland

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

Cable Diameter​: Φ8.0mm (Outer Diameter approx. 8.80mm)

Color​: Marine Blue

Impedance​: 110 Ohm

Conductor Resistance​: <39 Ohm/km

Shield Resistance​: <28 Ohm/km

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

Test Voltage​: Conductor/Shield: 2000 V eff; Conductor/Conductor: 500 V eff

Operating Temperature: -5°C to +70°C

RCA Plug (KLE)

1. KLE Copper Harmony RCA (Copper Version)

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

2. KLE Pure Harmony RCA (Pure Silver Version)

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

3. KLE Absolute Harmony RCA (Super Silver Version)

• Material:​ Features 99.999% 5N pure silver for both signal and ground terminals.
  
• Flagship Performance:​ 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.

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

Supported Cable Diameter​: Default: max. 9.5mm; With slim sleeve (sold separately): supports 4.5mm

Recommended Burn-in Time​: >125 hours

Color / Version​

- Copper: Yellow printing
- PURE (Pure Silver): Pink printing
- ABSOLUTE (Super Silver): Light Green printing

Finish & Appearance

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.

Brand Heritage: Gotham Cables

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.

Precision Manufacturing Process

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.

Application Scenarios

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

• Professional Recording Studios:​ Where uncompromised signal quality is essential.
  
• High-End Audiophile Systems:​ Demanding the utmost fidelity from source to amplifier.
  
• Long-Distance Microphone Runs:​ Its superior shielding effectively rejects RF/EMI interference over extended lengths.
  
• Any scenario requiring high noise rejection and minimal signal loss.