Clean, balanced line connections between your gear. The PROEL Die Hard DHS140LU3 is a 3 m professional balanced cable with Die Hard ONEHERO 6.3 mm stereo (TRS) plugs at both ends. ONEHERO is the Die Hard series of premade cables and connectors with its own exclusive connector design, developed by the PROEL R&D team in Italy. Use it to connect mixers, audio interfaces, studio monitors, keyboards and processors with balanced 1/4-inch jacks.
Why customers choose it
- Balanced connection: TRS plugs with two conductors and a shield reject hum on balanced line inputs and outputs
- Two shields: high-grade DH PVC plus dense braided tinned-copper wire (128 x 0.10)
- Bare copper conductors: 2 x 0.34 mm²
- Flexible jacket: high-flexibility 7.0 mm PVC that lies flat and coils easily
- Die Hard ONEHERO plugs: PROEL’s own design for regular studio and stage use
Who it is for
Home and project studios (interface to monitor speakers), live sound racks, churches and schools, keyboard rigs and DJs with balanced 1/4-inch outputs.
Specifications
| Type | Professional balanced cable |
|---|---|
| Connectors | Die Hard ONEHERO 6.3 mm stereo jack – 6.3 mm stereo jack |
| Length | 3 m |
| Overall jacket | High-flexibility PVC, 7.0 mm diameter |
| Conductors | Bare copper, 2 x 0.34 mm² |
| 1st shield | High-grade DH PVC |
| 2nd shield | Dense braided tinned copper wire, 128 x 0.10 |
| Colour | Black |
| Weight | 0.36 kg |
| Other lengths in the series | 1, 2, 3 and 5 m (DHS140LU1 – DHS140LU5) |
Good to know
- Both devices must have balanced (TRS) jacks to get the noise-rejection benefit; with a mono (TS) jack it works as a normal unbalanced cable.
- Common use: audio interface or mixer outputs to active studio monitors with 1/4-inch TRS inputs (you need two cables for a stereo pair).
FAQ
Can I use it for guitar?
It will work, but an instrument cable with mono plugs (such as the DHS100) is the usual choice for guitar.
How many do I need for a pair of studio monitors?
Two – one for the left and one for the right speaker.



























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