Detail 01
Female on both ends
Only joins two cables that both end in male plugs. It will not adapt a male end to anything.
Product detailSKU #1316478171377
HosaGMM-303 Stereo 3.5 mm Female TRS to Stereo 3.5 mm Female TRS Coupler
Independent shopping perspective
The Korena take
A 3.5mm coupler that joins two male-ended cables. For extending headphone or aux runs without a new cable.
Strong match
Who this is for
- Joining two aux cables to reach a distant input
- Extending headphone cable length in a studio or rehearsal room
- Keeping a spare in a gig bag for cable emergencies
Consider the trade-offs
When to look elsewhere
- Anyone needing one long continuous cable — a coupler adds a failure point
- TRRS headset use with a mic — this passes stereo TRS only
- Balanced or line-level patching in a permanent rack install
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Stereo TRS wiring
Carries left, right and ground. Stereo stays intact through the joint.
Detail 03
3.5 mm (1/8 in.)
The standard mini plug size on headphones, phones and laptop outputs. Not compatible with 1/4 in. cables.
Detail 04
Inline barrel design
Sits loose in the cable run. It hangs at the joint rather than mounting to a panel.
Final check
Know before you order
- 01No cables included — you supply both cables being joined
- 02Three-conductor TRS only; a TRRS headset mic signal will not pass
- 03Long chained runs at mini-plug level can pick up noise
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this work with my headphones?
Yes, if the headphone cable ends in a 3.5mm male plug. Plug that into one side and a 3.5mm male extension cable into the other.
02Does it work with a headset that has a microphone?
No. It is wired for stereo TRS, three conductors. A headset mic uses a fourth conductor that this does not pass.
03Can I use it to connect two devices together?
Only through cables. Both ends are female, so you need a male-ended cable on each side. It does not plug into a device directly.
04Does it fit 1/4 inch cables?
No. Both ends are 3.5mm. You would need a separate 3.5mm to 1/4 in. adapter.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Gray
