Which connector does 4-Pin MIDI DIN Male to Female Extension Cable use?

It is built around 4-pin DIN male.

4 Pin DIN Extension Cable, Male to Female

Last updated: 13 September 2026

Overview

A 4 pin DIN extension cable is the least standardized member of the DIN family, which is exactly why it is worth being careful. The shell that carries MIDI has five pins; the four-pin version has been used for power, for audio, for control links and for video, and no single pinout applies across all of them. This build is a passive male-to-female extension: it adds length to a run that already works and changes nothing else.

Key Specifications

Connector A	4-pin DIN male
Connector B	4-pin DIN female
Shell	Standard 13.2 mm DIN body or mini-DIN body, to order
Wiring	Straight-through, pin 1 to pin 1, unless you specify otherwise
Cable	Shielded multi-core, conductors to your pinout
Jacket	PVC
Strain Relief	Molded at both ends
Build standard	Built to the pinout you send; no signal conversion

Telling the four-pin shells apart

Before you order, measure the shell and look at the pin layout. Two connectors that are both “4-pin DIN” can be different sizes with different pitch:

Shell	Body diameter	Recognizable by	Common uses
Standard DIN	About 13.2 mm	Circular metal shroud with a locating lug	Legacy audio, power and control links
Mini-DIN	About 9.5 mm	Smaller body, plastic or metal shroud	S-video, some keyboard and data ports
2-pin speaker DIN	About 13.2 mm	No shroud, one spade and one round pin	Older European speaker connections
XLR style	Larger, with a latch	Three or more pins plus a locking catch	Balanced audio, not a DIN shell

The DIN connector family covers all of these bodies, and the mechanical definitions are industry standards rather than ours. Your cable is built and verified to the shell and pinout stated on your drawing.

Identifying the cable you need to extend

Measure the plug body with calipers or a ruler: 13.2 mm is standard DIN, 9.5 mm is mini-DIN.
Count the pins and note the keyway, which is the notch or flat on the shroud that stops it going in the wrong way round.
Check gender at both ends of the existing run so the extension is male to female.
Find out what the four conductors carry. Power, audio and control all use this shell, and the conductor size differs between them.
Photograph both ends straight on and send them with the inquiry.

Why the original run failed

Oxidized contacts. These connectors often sit unmoved for years. A dull contact surface is enough to kill a low-level signal.
Bent pins. The pins are exposed and soft. One bent pin means one dead conductor, and the symptom is usually noise rather than silence.
Shield broken at the relief. A cable that has been coiled tightly for years breaks its drain wire where it enters the plug.
Cable too short. Most extensions are ordered because someone moved a rack and the original run no longer reaches.
Wrong substitution. A straight MIDI cable used as a power lead, or the other way round, is the classic four-pin mistake.

We wire straight-through, pin 1 to pin 1, unless you tell us otherwise. We do not assume a pinout from the pin count.

Fitting and verifying an extension

Fit the extension at the equipment end first, with the equipment powered down.
Align the keyway before you push. Forcing a DIN plug bends pins, and bent pins are the most common cause of a channel that works intermittently.
Confirm the signal or supply is present at the far end before you tidy the run.
Keep the total run as short as the job allows; an extension adds length and the length adds capacitance.
Label both ends if the run disappears into a rack.

Typical Applications for This 4 Pin DIN Extension Cable

Extending a legacy audio or control link after equipment has been moved
Bringing a DIN connection out to an accessible point on a rack or panel
Replacing a damaged section of an installed run without re-cabling
Low-voltage DC power links on older European equipment
Test benches where the same device is moved between positions

How to specify your build

Shell size: standard DIN or mini-DIN.
Gender at each end on the existing run.
Pinout, or a statement that straight-through is what you want.
Conductor size if the run carries power.
Length you need to add.
Shielded or unshielded.
Quantity, and whether this is a prototype or a production order.

Workmanship and testing

Assembly and inspection follow IPC/WHMA-A-620 Class 3 workmanship criteria under our ISO 9001 quality management system, and every unit passes 100% continuity and pinout testing before it is packed. Conductor range is 32 to 12 AWG. Straight-through is verified conductor by conductor rather than assumed, which is the only thing that matters on a shell with no agreed pinout. Any figure quoted for the shell is the industry-standard value; your assembly is built and verified to your drawing.

Custom builds and ordering

Small runs start at 5 pcs and leave in 3 working days. At production volume the minimum is 500 pcs and lead time is 14 working days after approval. New tooling is about 10 working days on top. OEM and ODM orders ship under your part number, with material certificates and first-article reports available.

Related DIN and audio assemblies

If you are working on legacy gear, these are the other shells in the same family:

Full range: audio and video cable assemblies.

Frequently Asked Questions

Is a 4-pin DIN the same as MIDI?

No. MIDI uses the five-pin shell. The four-pin version has been used for power, audio, control and video, and there is no single pinout that covers all of them.

Can you wire it to my pinout?

Yes. Send the pinout and we build to it. Straight-through, pin 1 to pin 1, is the default when you do not specify one.

Standard or mini shell?

Measure the plug body. About 13.2 mm is standard DIN, about 9.5 mm is mini-DIN. A photo with a ruler next to it settles it.

Will an extension degrade the signal?

It adds length, and length adds capacitance and loss. For long runs, tell us what the cable carries and we will advise on conductor size and shielding.