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Main image of Apollo Upgrade 4.4mm to 2.5mm Headphone Cable for Sennheiser HD620S Fits Sennheiser HD599, HD598, HD560S, HD400 PRO, HD579, HD569, 4-Strand 6N OCC/Silver-Plated OCC Braid, 4.9 Ft/1.5 m

Alt view image 2 of 6 - Apollo Upgrade 4.4mm to 2.5mm Headphone Cable for Sennheiser HD620S Fits Sennheiser HD599, HD598, HD560S, HD400 PRO, HD579, HD569, 4-Strand 6N OCC/Silver-Plated OCC Braid, 4.9 Ft/1.5 m

Alt view image 3 of 6 - Apollo Upgrade 4.4mm to 2.5mm Headphone Cable for Sennheiser HD620S Fits Sennheiser HD599, HD598, HD560S, HD400 PRO, HD579, HD569, 4-Strand 6N OCC/Silver-Plated OCC Braid, 4.9 Ft/1.5 m

Alt view image 4 of 6 - Apollo Upgrade 4.4mm to 2.5mm Headphone Cable for Sennheiser HD620S Fits Sennheiser HD599, HD598, HD560S, HD400 PRO, HD579, HD569, 4-Strand 6N OCC/Silver-Plated OCC Braid, 4.9 Ft/1.5 m

Alt view image 5 of 6 - Apollo Upgrade 4.4mm to 2.5mm Headphone Cable for Sennheiser HD620S Fits Sennheiser HD599, HD598, HD560S, HD400 PRO, HD579, HD569, 4-Strand 6N OCC/Silver-Plated OCC Braid, 4.9 Ft/1.5 m

Alt view image 6 of 6 - Apollo Upgrade 4.4mm to 2.5mm Headphone Cable for Sennheiser HD620S Fits Sennheiser HD599, HD598, HD560S, HD400 PRO, HD579, HD569, 4-Strand 6N OCC/Silver-Plated OCC Braid, 4.9 Ft/1.5 m

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Apollo Upgrade 4.4mm to 2.5mm Headphone Cable for Sennheiser HD620S Fits Sennheiser HD599, HD598, HD560S, HD400 PRO, HD579, HD569, 4-Strand 6N OCC/Silver-Plated OCC Braid, 4.9 Ft/1.5 m

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The upgrade cable is made of 4 strands (6N OCC + OCC with silver-plated) braiding, which has strong corrosion resistance and anti-interference ability. The highly elastic transparent PVC protective layer makes it tougher. Combining the characteristics of copper wire and silver wire, each frequency band performs better, upgrade your hearing experience on hi-resolution, audiophile or HiFi headset. Compatible with Sennheiser HD 550, HD 620S, HD 599, HD 599 SE, HD 598, HD 598 SE, HD 598 CS, HD 598 SR, HD 560 S, HD 400 PRO, HD 579, HD 569, HD 559, HD 558, HD 505, HD 518, HD 8DJ, HD6DJ headphones cable. Works with devices with standard 4.4mm AUX jack, compatible with FiiO JadeAudio KA3 Q3 M17 M11Plus BTR7 M11S, iFi Hip-dac2 ZEN CAN xDSD Gryphon GO blu Fosi Audio DS1 DSD512, etc. Package includes: 1 x headphones upgrade cable

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The upgrade cable is made of 4 strands (6N OCC + OCC with silver-plated) braiding, which has strong corrosion resistance and anti-interference ability. The highly elastic transparent PVC protective layer makes it tougher. Combining the characteristics of copper wire and silver wire, each frequency band performs better, upgrade your hearing experience on hi-resolution, audiophile or HiFi headset. Compatible with Sennheiser HD 550, HD 620S, HD 599, HD 599 SE, HD 598, HD 598 SE, HD 598 CS, HD 598 SR, HD 560 S, HD 400 PRO, HD 579, HD 569, HD 559, HD 558, HD 505, HD 518, HD 8DJ, HD6DJ headphones cable.

Works with devices with standard 4.4 mm AUX jack, compatible with FiiO JadeAudio KA3 Q3 M17 M11Plus BTR7 M11S, iFi Hip-dac2 ZEN CAN xDSD Gryphon GO blu Fosi Audio DS1 DSD512, etc.
Package includes: 1 x headphones upgrade cable

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First Listed on Newegg	October 03, 2026

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Item#: 9SIC8CTM7U8421