+ an inline volume control maybe.

https://koss.com/products/vc20

Connect a bluetooth transmitter (can recommend 1Mii) with APTX low latency to your TV via TOSLINK and get a Fiio BTR5 (or similiar).

This way you can also apply some EQ to tweak your IEMs to your taste.

Here you see the cables you will get the end of the cable you plug into your pc has a normal 3.5mm (with 6.35mm screw on adapter) connector, so you can just use it as it is.

Yeah, if. Did you check the authorized dealer list? Tiny. Then check the unauthorized one, miles long. With all the big names like Linsoul, hifigo, aliexpress and even Amazon (if it is not the marketplace store from hifiman on Amazon)

Don't need to contact the hifiman support. They only help you if you bought the headphone directly from them what most people probably didn't.

Any special reason for the gen 3? They sound very very very warm if not to say muddy.

Nah, you can get the Xtral as the transmitter to save a few bucks in comparison with the 1mii transmitter but I would really stick with a proper Bluetooth dac amp for the headphones. Maybe Have a look for a used btr5.

Two Xtral would connect to each other with Aptx HD which gives you a high latency again.

Yes, if you want a Bluetooth headphone it should support aptx LL at best. Here is a list.

https://www.aptx.com/product-listing?product_category=7&aptx_type=3&created[min]=2019/09/31&created[max]=2022/12/31&sort_by=created&sort_order=DESC

Don't use a Bluetooth transceiver as a headphone amp. Less power and features, too big, volume control sucks.... . Better stick to your original idea and use the 1mii transmitter and a btr5 or qudelix 5k. (maybe btr3k if on a tight budget)

The EQ function to adjust the sound to your liking is also a big plus.

One thing, you have a 5.1 system connected to your TV? Then you would have to change the tv settings to PCM for headphones and back for 5.1 all the time.

Just saying the BTA30 is overkill in this case. Only reason to get it as a transmitter is for music streaming over LDAC or as a receiver with its good DAC. For Just Aptx LL almost every transmitter above $25 works too. Example

BTA30 pro is great but quite pricey. Yes, it supports LDAC but for TV You cant really use it anyway because of the latency. Nice is that you can disable codecs in the App but you can do the same on the BTR5 / Q5K directly.

Never tried but I think so. 2 times aptx / aptx LL is okay. Think most transmitter fall back to aptx if you try to connect 2x aptx HD devices.

The App on both is not required. Only need it for a first setup (Codec, Latency), firmware update or if you want to adjust the EQ.

If you want to use it with a TV latency becomes a big part. The BTR5 supports APTX low latency which is great. The Q5k does not but you can use Aptx or Aptx HD and set the buffer size in the Q5k to low (in the app, once). Then the latency comes close to Aptx low latency.

I wouldn't pair the BTR5 / Q5k with the TV, even if it should support Bluetooth. I would get a bluetooth transmitter and connect it via toslink to the TV. Important is it supports aptx low latency too

Rec

Similar set up I am using for years.

The qudelix has no problem to connect to the TV transmitter and the phone at the same time. The BTR5 can too but I had some noise then.

For harder to drive headphones, or if you dont like apps at all or prefer a volume knob, I can recommend the ifi xCan. It supports aptx low latency too.

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Bluetooth open backs: Deva, Ananda BT, Grado GW100, koss porta pro BT, Koss clip on BT. Most of them will not provide aptx low latency, so lip synch problems could appear.

Cheap but great cable.

Aliexpress

Even LCD-X Soundstage > Arya V3 ??

Did they really destroy the soundstage that bad with the stealth magnets compared to the V2?