Geekria Apollo silver-plated cable with 4.4mm to 2.5mm connectors for cleaner audio.
Geekria Apollo compatible with Sennheiser HD620S for flexible setup.
Geekria Apollo cryogenic copper-silver blend fosters detailed highs.
Geekria Apollo OCC-silver copper strands improve coherence.
Geekria Apollo softflex insulation keeps cable pliable.
Geekria Apollo 150 cm length suits desktop and on-the-go.

GEEKRIA

GEEKRIA Apollo Silver-Plated Upgrade Cable – 4.4mm to 2.5mm for Sennheiser HD620S & HD Series

Free U.S. shipping and free 30-day returns. Check the compatible models in the description below.

$42.72

In stock. Ships free, usually within 1–4 business days.

Shop Pay installment options may appear at checkout where eligible.

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Spare Keep a spare (2)

Check the listed compatible models and specs before you order. Questions? Email us.

Multi-device One for each device (3)

Free tracked shipping and secure checkout on every U.S. order.

Free shipping

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Free tracked shipping on every order. Most orders arrive within 3–8 business days.

Free 30-day returns

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Return eligible items within 30 days of delivery for a full refund. We email you a prepaid return label.

Peak-demand shipping delays

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During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

Email support

Questions about fit or an order? Email nexoltic@gmail.com. We reply on business days (Mon–Fri).

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Product details

The GEEKRIA Apollo Silver-Plated Upgrade Cable is a precision-made replacement designed to pair with select Sennheiser headphones. Measuring 150 cm and weighing 31 g, this cord offers flexibility without adding bulk, helping you enjoy long listening sessions with less cable fatigue.

Premium construction for a cleaner signal

  • The cable features a braided 4-strand configuration (6N OCC + OCC with silver-plated) to resist corrosion and reduce interference.
  • An inner dual-layer Litz insulation paired with a transparent SoftFlex PVC jacket keeps handling smooth and reliable.
  • Gold-plated 4.4 mm and 2.5 mm connectors provide a stable, low-resistance contact at each end.

Hybrid materials for balanced performance

  • Cryogenic annealing copper paired with cryogenic annealing silver-plated copper aims to deliver a more open high end and coherent transitions across frequencies.
  • The blend is designed to preserve fine details while supporting a natural midrange and smooth overall response.

Compatibility and everyday use

  • Designed to work with Sennheiser models including HD400 PRO, HD505, HD518, HD550, HD558, HD559, HD560S, HD598, HD599, HD6DJ, HD8DJ, and HD620S cables.
  • Operates with devices offering a standard 4.4 mm jack and compatible 2.5 mm plug via the included configuration.

Note: Headphones cord only. Device not included.

What’s in the box

  • 1 x headphone replacement cable made by Geekria.

FAQ

Q: What headphones is the GEEKRIA Apollo cable compatible with?

A: Compatible with Sennheiser HD620S, HD599, HD598, HD560S, HD550, HD558, HD559, and other listed models.

Q: What benefits might I notice with this upgrade cable?

A: Aims to deliver clearer highs and coherent midrange via a copper-silver blend, while maintaining flexibility and durability.

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