The SAPT121 2-pack provides two essential 1/4" TRS female to 1/8" (3.5mm) male adapters for musicians, DJs, and audio engineers who need to connect professional gear to consumer devices. These black metal adapters bridge the gap between studio equipment and mobile devices, tablets, or laptops.

Each adapter converts your standard 1/4" TRS cables to work with 3.5mm inputs, maintaining signal integrity for both stereo and mono connections. The solid metal construction ensures reliable contact and durability through repeated use, while the compact design won't strain delicate headphone jacks.

These adapters handle line-level signals from mixers, audio interfaces, and headphone outputs. The nickel-plated contacts resist corrosion and provide clean signal transfer without introducing noise or distortion. At just over an inch long, they're small enough to keep in your cable bag without adding bulk.

Perfect for connecting mixer outputs to recording apps, routing headphone feeds to mobile devices, or adapting studio monitors for laptop playback. DJs use them to connect booth monitors to phone outputs, while musicians adapt their interface headphone outs for consumer headphones. They're also essential for connecting professional equipment to video cameras or portable recorders with 3.5mm inputs.

Simply plug your 1/4" cable into the adapter's female end, then connect the 3.5mm male end to your device. No additional cables required – these adapters work with any standard TRS or TS 1/4" cable you already own.

Backed by Seismic Audio's one-year warranty with fast shipping nationwide. Keep spares in your gig bag – you'll use them more often than you think.

Technical Specifications

Frequently Asked Questions

What's the difference between TRS and TS connections with these adapters?

These adapters support both TRS (stereo) and TS (mono) connections. When you plug in a TRS 1/4" cable, you'll get stereo output to the 3.5mm connection. With a TS cable, you'll get mono output. The adapter automatically accommodates either connection type without any switching required.

Can I use these to connect my audio interface headphone output to regular headphones?

Yes, these adapters are perfect for that application. Most audio interfaces have 1/4" headphone outputs, and these adapters let you use standard consumer headphones with 3.5mm plugs. The signal level and impedance work well for most headphones, though very high-impedance studio headphones may need a dedicated headphone amp.

Will these work for connecting a mixer to a phone or tablet for recording?

Absolutely. Connect a 1/4" cable from your mixer's main output or record output to the adapter, then plug the 3.5mm end into your mobile device's input. This is a common setup for live recording or podcast streaming. Make sure your mixer output level matches what your device expects – usually line level works best.

How durable are these adapters for regular gig use?

The metal construction and nickel-plated contacts make these adapters quite durable for regular use. They'll handle being plugged and unplugged frequently without wearing out quickly. The compact size means less stress on connection points compared to larger adapters. Many users keep them permanently attached to frequently-used cables.

Do I need any special cables to use these adapters?

No additional cables are needed – these adapters work with any standard 1/4" TRS or TS cable you already have. Simply plug your existing cable into the female 1/4" end of the adapter. The most common setup is using a standard 1/4" to 1/4" cable with the adapter on one end to create a 1/4" to 3.5mm connection.

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