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MMCX describes the connector at the earpiece end of an IEM cable. It does not tell you whether the cable has a microphone, which phone-side plug it uses, or whether its button controls work with your device. The direct-match tier below contains cables that combine MMCX with a microphone. The labelled near-miss tier contains genuine MMCX cable routes that deliberately do not meet the inline-mic brief, so you can avoid buying a good cable that cannot take calls. Check recessed housings and earphone maker compatibility as well as the connector name.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Shure RMCE-UNI Remote Mic Universal Cable | $49.99 | Amazon · eBay |
| 2 | Sennheiser MMCX Microphone Braided Cable for IE Series 3.5 mm Jack, 700259 | $89.95 | Amazon |
| 3 | KINERA Celest RUYI Earphone Upgrade Cable, MMCX | $29.99 | Amazon · eBay |
| 4 | Saillon In-Ear Monitor Upgrade Cable with Detachable Boom Microphone, MMCX | $69.95 | Amazon |
| 5 | Campfire Audio Pure Copper Litz Cable with 3-Button Control and In-Line Mic | $39 | Amazon |
| 6 | Sennheiser MMCX Braided Cable for IE Series, 1.20 m / 3.9 ft | $89.95 | Amazon · eBay |
| 7 | Sennheiser MMCX Cable for IE Series 3.5 mm Jack | $99.95 | Amazon · eBay |
| 8 | Sennheiser MMCX Balanced Cable for IE Series, 2.5 mm Jack | $149.95 | Amazon · eBay |
| 9 | Sennheiser MMCX Balanced Cable for IE Series, 4.4 mm Jack | $149.95 | Amazon · eBay |
The picks, in detail
Shure RMCE-UNI Remote Mic Universal Cable
Direct match: Shure’s 127 cm MMCX cable for detachable Shure Sound Isolating earphones has an inline microphone, three-button remote and selectable Android or iOS operation through its 3.5 mm connection.
- MMCX earphone connection
- 3.5 mm TRRS plug
- 127 cm length
- Android and iOS selector
- volume and playback controls
- intended for Shure detachable earphones
- requires a 3.5 mm headset jack or suitable adapter
Sennheiser MMCX Microphone Braided Cable for IE Series 3.5 mm Jack, 700259
Direct match for Sennheiser IE 200, IE 300, IE 600 and IE 900: 1.20 m braided cable with an inline mic, one-button call control and a CTIA four-pole 3.5 mm plug. Its MMCX recess is proprietary, so it is not a universal fit for flush MMCX IEMs.
- MMCX with Sennheiser recess
- CTIA 3.5 mm four-pole plug
- 1.20 m braided cable
- explicit IE-series compatibility
- inline microphone
- no volume control
- recessed connector limits cross-brand fit
KINERA Celest RUYI Earphone Upgrade Cable, MMCX
Direct match: select the MMCX version, not the 0.78 mm two-pin version. It has a 3.5 mm CTIA plug, 150 cm OFC cable and detachable omnidirectional boom microphone with mute support.
- MMCX version
- 3.5 mm CTIA plug
- 150 cm cable
- detachable boom microphone
- explicit MMCX selection
- boom mic is unlike a discreet inline remote
- must choose MMCX at checkout
Saillon In-Ear Monitor Upgrade Cable with Detachable Boom Microphone, MMCX
Direct match when ordered with the MMCX connector and 3.5 mm or USB-C termination. It is a 120 cm cable with a detachable boom microphone; the maker specifically excludes Sennheiser compatibility.
- MMCX option
- 120 cm length
- detachable boom microphone
- choice of 3.5 mm or USB-C termination
- microphone is detachable
- not compatible with Sennheiser
- connector and termination must be selected
Campfire Audio Pure Copper Litz Cable with 3-Button Control and In-Line Mic
Direct match: select the 3.5 mm three-button-control option. Campfire specifies its custom-matrix MMCX connection, 3.5 mm right-angle termination and optional inline microphone.
- custom-matrix MMCX
- 3.5 mm single-ended plug
- three-button inline mic option
- inline mic and control option
- named cable material
- must select the mic version
- custom connector geometry may not suit every MMCX IEM
Sennheiser MMCX Braided Cable for IE Series, 1.20 m / 3.9 ft
Near miss — no inline microphone. This current IE-series MMCX braided cable is a replacement route for compatible Sennheiser IEMs, but it does not add call control.
- MMCX IE-series fit
- 1.20 m length
- braided cable
- current manufacturer listing
- same IE-series connector family
- no microphone
- Sennheiser recessed MMCX fit
Sennheiser MMCX Cable for IE Series 3.5 mm Jack
Near miss — this is an MMCX-to-3.5 mm replacement cable, not the microphone version. It is useful only when calls and remote control are not required.
- MMCX IE-series fit
- 3.5 mm jack
- manufacturer replacement cable
- current manufacturer listing
- standard 3.5 mm route
- no inline microphone
- not a universal MMCX claim
Sennheiser MMCX Balanced Cable for IE Series, 2.5 mm Jack
Near miss — no inline mic and a 2.5 mm balanced phone-side plug, so it is not for a standard 3.5 mm headset jack or phone-call control.
- MMCX IE-series fit
- 2.5 mm balanced plug
- 1.20 m length
- current manufacturer listing
- balanced-player route
- no microphone
- not a 3.5 mm phone headset cable
Sennheiser MMCX Balanced Cable for IE Series, 4.4 mm Jack
Near miss — no inline mic and a 4.4 mm balanced phone-side plug. It is for a compatible balanced player, not a normal 3.5 mm headset jack or call-control use.
- MMCX IE-series fit
- 4.4 mm balanced plug
- 1.20 m length
- current manufacturer listing
- balanced-player route
- no microphone
- not a 3.5 mm phone headset cable
Buying tips
- Confirm the earpiece connector first: MMCX is not interchangeable with 0.78 mm two-pin, QDC or recessed proprietary housings.
- Then check the phone-side termination. A 3.5 mm TRRS CTIA plug is different from a TRS audio plug or a 2.5 mm and 4.4 mm balanced plug.
- Inline controls are device-dependent. Shure RMCE-UNI has an Apple/Android selector; other cables can have different or no remote behavior.
- Do not force a connector. A recessed Sennheiser MMCX cable may not seat correctly on another brand’s IEM.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.