accessibility for hearing impaired question

[nobo]

Hi, I'm single sided deaf and my last phone (Galaxy S3) had an option in accessibility to mix the headphone output down to mono. I can't seem to find this option on my new Xperia Z1 Compact. Is there another way to accomplish this? I'm already disappointed to think I might not be able to use my noise cancelling headphones with my new phone that I love everything else about.

Thank you.

Edit: I'm very new here so I hope I posted this in the right place. If I need to post elsewhere please let me know.

[Phy]

This feature it's not available with Xperias, contact your local Xperia support regarding this.

[Phy]

Local Sony Xperia Support.
http://support.sonymobile.com/global-en/contactUs/

[nobo]

Thank you for replying. If the feature isn't available on Xperia what would I contact local support for?

[komilAD]

For what purpose you want this feature for? Is it for during phone calls? Did you tried call settings?

[nobo]

I would like to have the stereo 1/8" output mixed down to mono. This is mostly for music and video, call audio is already mono, or at the least is a mono signal split between channels so there's nothing to miss by losing the left side. I'm looking at call settings right now and I don't see what I'm looking for. There is a hearing aid compatibility option but it adjusts the frequency interference setting not the audio output. Interestingly, I think this is the first phone I've had that doesn't have the mono direct out option but also the first phone I've had with the interference option. Huh.

Thank you for replying