Eau Rouge Pure Silver Solid Speaker Cable ER-SP735

The ultimate potential of Eau Rouge’s pure silver solid ribbon cable

The ER-SP735 is Eau Rouge's flagship speaker cable featuring proprietary high-purity silver ribbon conductors. Its construction ensures minimal phase shift between the conductor's core and surface, allowing the transmission of large currents up to 50A. It delivers stable energy, from subtle nuances to full-on dynamics.

Specially refined 'pure silver' containing gold—a material that maximizes sonic purity

Eau Rouge's pure silver is a special grade refined from mined silver. The trace amount of gold remaining as an impurity stabilizes the silver's crystal structure, resulting in clear transparency, smooth harmonics, and rich texture. This characteristic contributes to the ER-SP735’s unique sense of silence and natural soundstage formation.

Overwhelming quietness created by triple Kapton shielding

For insulation, ultra-high heat-resistant polyimide film 'Kapton' is used to minimize tonal changes. In addition, the triple-shielded structure thoroughly eliminates external noise, achieving a highly pure spatial depiction with a profound sense of silence. It carefully renders even fleeting hall tones and delicate reverberations.

High-purity solid silver Y-lugs—clear transmission through unified materials

The terminals use Eau Rouge original pure silver Y-lugs, made from the same material as the conductors. By unifying the materials, tonal muddiness from contact points is eliminated, dramatically improving image focus, transparency, and S/N ratio. The combination of fast attack and natural extension is a unique advantage of the pure silver ribbon.

A sound character that pursues 'unexaggerated beauty'

The ER-SP735 sound is free from flashiness or exaggeration.
A quietly standing, yet deeply expansive soundstage.
Smooth harmonics, natural breath, and reproducibility of air.
Ideal for listeners who value tonal purity, whether it’s classical, chamber music, jazz, or vocals—a natural sound experience.

A 'lifelong reference cable' crafted by skilled artisans.

All processes are handmade by skilled craftsmen. The cable is designed without compromise in terms of uniformity of materials, structural precision, and shielding, and has the quality to be used as the center of high-end systems for many years.

Extreme clarity and resolution

• The first thing that surprised me the moment I switched to this sterling silver cable was that the turbidity completely disappeared.
  Perhaps due to the conductive properties unique to solid silver conductors, the amount of information is released all at once, and the resolution of the sound is dramatically improved. There are no incidental sounds, it's just clear. The sound seemed to float directly into the air, and the clarity was enough to take my breath away. Furthermore, the startup speed is also impressive.
  
• There is a raw agility that appears the moment the sound touches it, and the difference is especially obvious in fast-paced songs. The dynamism of the music becomes even more vivid, and it feels like you can even see the performer's touch.
  

Sound balance and musicality

• When you think of silver wire, you may have the impression that the high range is a little emphasized, but this cable has none of that.In fact, the high range is naturally and comfortably spread out.
  Although it is clear, it does not sting and extends smoothly throughout, so your ears will not get tired even if you listen for a long time. I get the impression that they have achieved the difficult balance of high resolution and musicality.
  
• The sharpness of the low range stands out more than the volume. The type of low range is tight, has high braking power, and allows the rhythm to be clearly seen, tightening the outline of the entire music. I felt that the faster the tempo of the song, the more enjoyable the sound was without making me feel vague about my footing.
  

Quality and ease of use

• Sterling silver cables have the image of being hard and difficult to handle, but this cable has just the right amount of flexibility and is surprisingly easy to handle. I was also impressed by the fact that the installation work was less stressful because the wiring could be done naturally without having to bend it too much.