The SAPT123 adapters solve the common connection problem when you have a 1/4" cable but need to plug into a 1/8" (3.5mm) input. Musicians, DJs, and audio engineers rely on these adapters to connect professional gear to consumer devices, or to bridge different connector standards in their signal chain.

These silver-plated adapters convert a 1/4" TRS female connection to a 1/8" TRS male plug, maintaining stereo signal integrity throughout the conversion. The compact design adds minimal bulk to your setup while providing a secure, stable connection that won't work loose during performances or recording sessions.

Each adapter features quality construction with silver plating for optimal signal transfer and corrosion resistance. The threaded 1/4" female connector ensures a tight connection with professional cables, while the 1/8" male plug fits securely into smartphones, tablets, audio interfaces, and consumer electronics. This pack includes two adapters, giving you a backup or allowing simultaneous connections.

Common applications include connecting headphones with 1/4" plugs to mobile devices, routing professional audio gear to consumer recording equipment, or adapting DJ controllers to different input types. Studio engineers use these when connecting outboard gear to interfaces with mixed connector types.

The adapters work with any standard 1/4" TRS cable and plug directly into 1/8" inputs without additional cables needed. Both adapters come ready to use straight from the package.

Seismic Audio backs these adapters with a one-year warranty and fast shipping. Professional reliability at a practical price point for your audio toolkit.

Technical Specifications

Frequently Asked Questions

What's the difference between 1/4" and 1/8" connectors?

The 1/4" (6.35mm) connector is the professional audio standard used on most studio headphones, instrument cables, and pro audio gear. The 1/8" (3.5mm) connector is the consumer standard found on smartphones, tablets, laptops, and portable audio devices. These adapters bridge the gap between professional and consumer equipment.

Will these adapters work with both mono and stereo signals?

Yes, these TRS adapters handle both mono and stereo signals. The three-conductor design (tip, ring, sleeve) maintains stereo separation when used with stereo sources, and works perfectly fine with mono signals as well. They're suitable for headphones, line-level audio, and instrument connections.

Can I use these to connect my studio headphones to my phone?

Absolutely. This is one of the most common uses for these adapters. If your studio headphones have a 1/4" plug, these adapters let you connect them directly to smartphones, tablets, or laptops with standard headphone jacks. You'll get the same audio quality as a direct connection.

Do these adapters reduce audio quality or add noise?

No, quality adapters like these maintain signal integrity without adding noise or reducing audio quality. The silver plating ensures clean signal transfer, and the solid construction prevents connection issues that could cause crackling or dropouts. They're a transparent connection between different connector types.

Why does this come as a 2-pack instead of single adapters?

Audio professionals know that adapters are essential tools that tend to get lost or are needed in multiple locations simultaneously. Having two adapters means you always have a backup available, or you can leave one in your studio and keep one in your mobile kit. It's more cost-effective than buying individually when you inevitably need a second one.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer. For more information, go to: www.P65Warnings.ca.gov