Adapter SSQ HA2 — 6.3 mm (1/4") stereo jack to 3.5 mm stereo jack adapter

The SSQ HA2 adapter converts a 6.3 mm (1/4") stereo jack to a 3.5 mm stereo jack, providing a reliable mechanical and electrical connection between devices with different headphone or line-level connectors. It supports a stereo signal path so left and right channels remain separate, allowing headphones, audio cables and equipment fitted with 3.5 mm plugs to be used with 6.3 mm sockets. The adapter is compact and designed for convenient use in studios, home audio systems and portable setups.

Advantages

The metal-bodied adapter offers solid contact and stable signal transmission with minimal added bulk. Its stereo configuration preserves channel separation and maintains consistent audio performance when adapting between jack sizes. The compact form factor makes it easy to carry with headphones or include in a studio bag without occupying much space.

Suitable for

• Connecting 3.5 mm headphone plugs to 6.3 mm amplifier, mixer or audio interface sockets
• Using portable audio players or smartphones with studio or PA equipment
• Adapting consumer headphones for use in recording and monitoring applications
• Temporary connections in live sound, rehearsal rooms and home studios

Key specifications

• Connector A: 6.3 mm (1/4") stereo jack (female)
• Connector B: 3.5 mm stereo jack (male)
• Signal type: stereo, left and right channels preserved
• Construction: compact adapter body suitable for portable use

How to use

Insert the 3.5 mm plug of the headphone or cable into the adapter's 3.5 mm jack, then insert the adapter's 6.3 mm end into the target socket on the amplifier, mixer or other audio device. Ensure both connections are fully seated to avoid intermittent contact. Remove the adapter by gently pulling while holding the connector to avoid stress on the cable.

Usage recommendations

Use the adapter with clean, dry connectors to maintain contact quality. Avoid applying excessive force or twisting while inserting or removing to prolong connector life. For critical or permanent installations consider using cables with the required connector sizes rather than relying on adapters long-term.