Quick Answer
Use the HiBy HC1 plug when you want to add hardware decoding and impedance matching to any IEM cable with a 4Pin-lock connector, especially with the Cu4 Coaxial O.C.C. Balanced Cable for minimal distortion and faithful reproduction.
Why Use the HC1 Plug Instead of a Standard Connector?
A standard IEM cable connector only passes an analog signal. The HiBy HC1 plug adds a PCM384K/32 hardware decoding chip and impedance matching circuitry, which can reduce distortion (0.0018% THD) and optimize the signal for earphones with 8 to 100Ω impedance. This is useful if your source device lacks a dedicated DAC or if you want a cleaner signal path without changing your entire cable.
Compatibility with the Cu4 Cable
The Cu4 Coaxial O.C.C. Balanced Cable uses a 4Pin-lock connector, which is the same interface the HC1 plug supports. The Cu4 cable also features coaxial shielding and Litz Type4 construction, making it a good match for preserving signal integrity when paired with the HC1's decoding. If you already own a Cu4 cable, swapping to the HC1 plug is straightforward and does not require additional adapters.
Frequently Asked Questions
When should I use the HiBy HC1 plug?
Use it when you want hardware decoding for PCM up to 384kHz/32-bit, or when your IEMs have an impedance between 8 and 100Ω and you want impedance matching for a flatter frequency response. It is also useful if your source device has a noisy analog output.
Can I use the HC1 plug with any IEM cable?
Only with cables that have a 4Pin-lock connector. The HC1 is designed to work with HiBy Cu4 and other 4Pin-lock cables. Check your cable's connector type before purchasing. Verify your cable has a 4Pin-lock connector before using the HC1.
Does the HC1 plug work with all IEMs?
It works with any IEM that uses a standard 2-pin or MMCX connector on the earphone side, as long as the cable has a 4Pin-lock plug. The impedance matching is effective for IEMs with 8 to 100Ω impedance; outside that range, the benefit may be less noticeable. Check your IEM's impedance; if it is within 8-100Ω, the HC1's impedance matching will be most effective.
Product Details
-
HiBy HC1 plug for Cu4 and Cu4 Cable: PCM384K/32 hardware decoding, 0.0018% low distortion, 8-100Ω impedance matching, 4Pin-lock cable support. This means the HC1 can handle high-resolution audio files and adjust the output for a wide range of IEMs, reducing distortion and improving clarity.
HiBy HC1 plug for Cu4 and Cu4 Cable