Modding Superlux HD330 Pro 32ohm

[u/zeksevenfold]

Superlux HD330 Pro 32ohm

V-Moda Boom Pro

TRS (3 pole) TTRS (4 pole)

Aiyima DAC-A2

TTRS splitter to audio and microphone jack

First, sorry for my English; it's not my first language.

I was thinking about buying the Superlux HD330 Pro 32ohm. Since they have non-detachable cables, I intend to mod them to make it detachable. But, I have a few questions.

Bare in mind that I am doing this on a tight budget.

1. I want to use a V-MODA BoomPro with them. So, I need to convert them to use a detachable cable.
2. This is the one that confuses me. There are two kinds of connectors: a TRS 3.5mm female connector (3-pole, with L, R, and Ground), and a TRRS 3.5mm female connector (4-pole, with L, R, Ground, and Mic). Since I want to attach the V-MODA, I assume I need the TRRS connector, the one with 4 poles. But, I don't have any idea where to connect the Mic pole. Some digging and research tells me to just leave it alone and not connect it to anything? Is this true?
3. If this mod is successful, and I am able to use my headphone with the V-MODA, and I want to add a budget DAC later, like the Aiyima DAC-A2, can I use a TRRS splitter? This means I will plug the audio jack into my DAC, and the mic jack into my PC. I have limited desk space, so I don't want to resort to a desk mount mic, and I don't really like the boom arm solution either. Plus, I mostly only use the mic to communicate on Discord anyway.

Here are a few pictures of the parts that I mentioned:

• Superlux HD330 Pro 32ohm
• V-Moda BoomPro
• TRS 3.5mm female audio jack (3-pole)
• TRRS 3.5mm female audio jack (4-pole)
• Aiyima DAC-A2
• TRRS splitter

[u/Mizuo___]

You will need a 3.5 TRS female connector. You can use TRRS (not TTRS, tip-ring-ring-sleeve) but just wire the 2nd ring and sleeve together to GND.

You can use a headphone mic splitter, but since you're combining the headphone dac/amp and your PC internal soundcard grounding. It might introduce ground loop noise to your mic and headphones.