01OVER EAR HEADPHONES
Precision audio connection for legacy headphones
Tucked discreetly into the chain between your source and your favourite over-ear headphones, this small black adapter restores a familiar ritual. It sits quietly in the signal path, ensuring that classic studio monitors remain fully functional without altering their character.
Designed for owners of specific Audio-Technica and Sennheiser models, it bridges the gap between older 2.5mm jacks and modern 3.5mm cables. It is a precise tool for those who value continuity in their listening setup.


02MATERIALS
Robust metal build with gold plating
Constructed from high-quality metal, the adapter offers a sturdy physical presence that resists daily handling. The contacts are gold-plated, a detail chosen to maintain signal integrity over time. This combination of robust exterior and refined internal finish ensures the connection remains stable and clear, providing a long service life for your audio equipment.
FUNCTION
Stereo sound via plug-and-play connection
The device acts as a bridge, taking a 2.5mm male plug and extending it to a 3.5mm female socket. It works with both three-pole and four-pole auxiliary cables, ensuring full stereo output. The design includes a locking mechanism identical to the original aux cable, preventing accidental disconnections during use. Simply plug it in to restore your preferred listening configuration.
AT A GLANCE
The key points
- Gold-plated 2.5mm TRS male to 3.5mm female connector
- Durable high-quality metal construction
- Compatible with Audio-Technica M40X to M70X series
- Fits Sennheiser HD518, HD598se and HD599 models
- Includes locking mechanism matching original aux cable
Highlights
- Scope of use
- Paired with a 3.5mm male to male recording cable and adapter, it can be suitable for use with Iron Triangle ATH-M40X ATH-M50X ATH-M60X ATH-M70X
- DURABLE METAL CONSTRUCTION
- Made from high-quality metal materials, this adapter is built to last, providing sturdy performance and a long service life
- CONVENIENT AND PRACTICAL
- Its small size and plug-and-play functionality make it simple and convenient to use, allowing for hassle-free audio connections.
- DELICATE AND LONG-LASTING
- With its delicate appearance and robust build, this adapter is resistant to damage, ensuring long-term durability and reliable use
About this product
- Sennheiser HD518 HD558 HD595 HD595 HD598se HD569 HD579 HD599 and other headphones.
- The price is for the adapter and does not include the recording cable
- Gold-plated 2.5mm TRS male to 3.5mm (1/8″) female audio extender adapter – Ensure you get Hi-Fi and stereo sound
- Connect with the existing 3.5mm male aux cord – Make your Audio-Technica or Sennheiser headphones work again
- M40X M50X M70X HD518 HD598 HD599 to 3.5mm adapter
- 5mm jack is adaptable with 3 poles or 4 poles aux cable
- The adapter has the same lock as the original aux cable













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