Oyaide HPSC-35HD500 / HPSC-63HD500 The new “102 SSC” precision conductor headphone cables with bayonet locking plug

Basic

The “HPSC Series” is OYAIDE ELEC. headphone and portable audio cables featuring the precision conductor “102 SSC” and “100% pure silk filament”. The “102 SSC” precision conductor is based on oxygen-free copper, and features a “mechanical peeling” process that physically removes 100% of impurities from the copper wire surface, a “natural diamond die” that smoothes the copper wire surface to the utmost limit, strictly temperature-controlled heat treatment, and a processing accuracy of ±1μm or less. OYAIDE ELEC. conductors for audio cables are created by Japan’s world-class copper drawing and wire processing technologies, including “mechanical peeling” to remove 100% of impurities physically, “natural diamond die” to make the copper wire surface as smooth as possible, strictly temperature controlled heat treatment, and thorough control of wire diameter uniformity with processing precision of ±1μm or less.

The thickness of the signal line composed of the precision conductor “102 SSC” is a generous 0.3 scale. From delicate high frequencies to powerful low frequencies, the delicate headphone output is faithfully transmitted without stagnation. The “100% pure silk filament” used for the inclusions and outer jacket effectively suppresses static electricity and vibration, and significantly reduces noise. High-resolution and clear sound is realized.

The chic white and black mosaic cable colors match any headphones without any discomfort.

The HPSC-35HD500/63HD500 bayonet-lock headphone cables have been added to the HPSC Series. The HPSC-35HD500/63HD500 cables can be used with Sennheiser’s traditional “HD500 Series” such as the HD598/HD599, the popular studio monitor audio-technica “M Series The “M-series” monitors are popular as studio monitors.

Features

Bayonet Clip made of Engineering Plastic (PBT)

The bayonet locking mechanism of the HPSC-35HD500/HPSC-62HD500 is designed and adjusted with micron-level precision and molded to provide a smooth and firm hold. The resin used for the mold is an engineering plastic (PBT) with excellent durability and dimensional accuracy, and optimized hardness to prevent abrasion of the locking mechanism on the headphone body even after repeated attachment and removal.

This allows the headphones to be securely held in place and does not cause wear to the headphone body. The handles are covered with finely knurled chrome-plated brass machined covers. This makes it easy to attach and detach the cable and brings a textured beauty to the bayonet clip. In addition, the 2.5φ3-pole pin of the bayonet clip is plated with 18K gold.

Oyaide”102SSC” Precision Conductor

The HPSC Series is a new series that replaces the HPC Series. The key technologies are the “102 SSC precision conductor” and “silk”. The cable conductor is made of 102 SSC, a new material that replaces PCOCC-A. The “precision conductor 102 SSC” developed by OYAIDE ElEC. as a high-end audio cable has already received high acclaim around the world, but this is the first time it has been used in headphone cables.

The conductor is a 7/7/0.089 rope strand with excellent bending resistance, and its thickness is a generous 0.3 scale. It faithfully transmits delicate headphone output from delicate high frequencies to powerful low frequencies without stagnation. The shield is also made of “102 SSC,” a precision conductor, and is a spiral shield with excellent flexibility.

Click here for more information on 102SSC.

Pure Silk Filament

For the interconnections, 100% pure silk filament is used, which has low capacitance and is not charged with static electricity. When a signal flows in a cable, weak vibrations are generated, and materials that are charged with static electricity will experience corona discharges due to the vibrations. To solve this problem, silk filaments are mounted. In addition, the cable exterior is also coated with a “100% pure silk jacket. The synergistic effect of these materials has greatly reduced noise without sacrificing flexibility. The chic white and black mosaic cable colors match any headphones without any sense of discomfort.

Oyaide “SS-47” Solder for Audio Application

Plugs and cables are soldered with “SS-47″, a lead-free silver solder specially designed for acoustic use. Ordinary solder has a tin purity of about 99.9% (3N) due to cost considerations.” SS-47″ is made of high-purity tin that is 99.993% (4N) or higher, eliminating impurities to the utmost limit. In addition, silver and copper are added to improve conductivity and prevent solder from being eaten away.

Furthermore, the ratio of silver in a normal alloy solder is 3 to 3.5%, but in “SS-47″ a whopping 4.7% is used without hesitation. In addition, SS-47 contains 1.7% copper, which has the second highest conductivity among metals after silver. This ratio dramatically improves the conductivity, and we succeeded in setting the eutectic point at 217 degrees Celsius. Of course, these blending ratios were not determined by numerical data and workability alone.

We believe that sound quality should be the top priority for a product to be labeled as an audio solder. SS-47” is the result of numerous listening tests of prototype models with various mixing ratios.

💎 Key Features

✅ 102 SSC Conductor

• Ultra-pure Super Stress-Free Copper (102 SSC) with precise molecular alignment

• Delivers clean transients, low signal loss, and natural tonality

✅ Natural Silk Fiber Damping

• Surrounds the internal conductors to reduce vibration, static noise, and microphonics

• Enhances resolution and smoothness across the frequency range

✅ Custom Bayonet Locking Connector

• Designed for Sennheiser HD500 series (e.g., HD598, HD599, HD558, HD579, etc.)

• Secure twist-lock fit — no signal interruption or looseness

• Made from durable machined components with tight tolerances

✅ Gold-Plated 3.5mm / 6.3mm Plug

• Machined brass with anti-corrosion gold plating

• Offers excellent conductivity and mechanical reliability

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🎧 Sound Characteristics

• Open and detailed, with an emphasis on clarity and imaging

• Tight, well-controlled bass

• Smooth highs without harshness

• Elevates stock Sennheiser sound to studio-grade accuracy

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🧠 Best Use Cases

• Owners of:

  • Sennheiser HD598 / HD599 / HD579 / HD558 / HD595

  • Any headphone using the same bayonet-style connector

• Wanting a clear sonic upgrade without changing headphones

• Ideal for both critical listening and daily portable use

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🛠️ Pro Tips:

• Use HPSC-35HD500 with portable rigs (DAPs, dongle DACs)

• Use HPSC-63HD500 for full-size amps or studio interfaces

• Pair with Oyaide extension cables (HPSC-35J / 63J) for extra reach without quality loss