Wires are insulated, not nice to work with. Depending on your equipment – you can use soldering pot, or solder flux and iron with hot solder. Some smoke and smell occurs – there's plastic involved. White thing is rope to structurally strenghten tiny wire. It might be possible to separate it and...

You can – if you hook it up as in diagram 2; but minus output (U2–) becomes GND for both devices.

Exactly, like this:

Attenuation makes sense for vintage gear, or generally if you happen to have too much gain in the system… I suggest that you add 4k7 in series at the load end of the cable and 5k6 between signal and ground for –6dB (use 6k8 & 2k4 for –12dB). The math behind it can be done with online voltage...

Thanks for mentioning it, yes musiccast is useless as dlna music player. I use other app – Glider for iOS these days. Musiccast app only for setting up the streamer. Regarding settings, you can change more settings in web browser by typing streamer IP address.

I use Yamaha as streamer source, with ethernet/DLNA (and airplay). Quick response, and it is stable. Volume level is fixed, and is not changed by controller buttons. Musiccast app – not so much, only for initial setting of the streamer. I agree that the app is awesome. BTW the app just got...

Neutrik brand is OK for RCA connector, but next time – consider different model: https://www.neutrik.com/en/products/video/phono-rca

I had look at linked adapter and balanced cable connected to that adapter and to DAC will work. Dual jack looks like proprietary solution from Mytek. However, mechanical connections add up with adapters. What about dual 1/4 cable that connects DAC and 'phones directly?

Left cup Tip positive, right cup Ring positive. Both have sleeve as negative (ground).

Yes, just connect 3 negative wires to ground at TRRS connector. GND is either S or R2.

Cable impedance is important for low impedance IEMs, but wire size and flexibility is important. 20AWG fine strand silicone wire is largest that can be used (and maybe it is already too thick and heavy), with OD of 1.5mm. Smaller wire means too much resistance/impedance added to amp ZOUT.

Jacks from Neutrik (right angle; Neutrik – not Rean sub brand). Wire/cable does not matter much as it will be probably < 10 cm. Any stranded copper or silvered copper with 3 wires, flexible even at low temperatures.

Dual mogami w2944 cable, one cable for each channel. Recabled DT250-250 with direct entry to each side.

2.5mm TS jack wiring: https://www.head-fi.org/threads/diy-cable-questions-and-comments-thread.676402/page-413#post-13178974 If you do not want to connect cable shields, you are OK with 4 wire connection to XLR pins 1–4. If shield is to be connected – it goes to XLR barrel (5th solder tab)...

Pulling metal tabs definitely broke tiny speaker wire that was originally soldered to it – no way to repair it. The only option is to get spare (new) headphone driver for your left channel. Sorry about that. Beware that these tabs – prongs might be only inserted into plastic piece, not glued or...

Use anything you like, there are good reasons like already having the device, storage space... I use any player or device with digital output and connect it to external portable dac/amp of my choice. Sadly you can not get digital out from ipod 5g and similar. So iphone and itouch have this...

Did you try to put in new power tubes? (And trash the old ones.)

This could be interesting years ago, but now it makes no sense… You can get digital out from any iphone or current ipod (touch) without hacking the device. You can not get digital out from any non-touch iPod – 5G (video), classic, or older. So ipod 5G with analog output modification used to be...

Here, under E, from neutrik-rean assembly instruction:

Hi tvr, luckilly pinout should be the same as for mini and standard size 4pin XLR: 4pin XLR & mini-XLR pinout (mini XLR has pin4 in the middle): 1 - left channel + 2 - left channel - 3 - right channel + 4 - right channel - No drain wires, only pair of signal wires for each channel. Shield is...

My preferred way is to hardwire headphones with ~ 1.5m long cable terminated with single 4-pin Tiny XLR (Neutrik-Rean) connector at amplifier end. Then make long or short adapter cables if needed (for regular size 4-pin XLR or unbalanced jacks) – with male connector. You end up with connectors...

Rean is cheaper brand from neutrik. Right angle neutrik model is way better and not expensive…

Pin of the DAC-CODEC chip, pinout can be found in WM8978 datasheet. Or replace the whole board, it can be obtained as replacement part.

Three conductors is easiest way to conect L, R and ground. Four might be used as two twisted pairs - here two conductors carry ground, so are connected together at each connector.

Connection at miniplug goes like this: T is L+ R is R+ S is L- and R- together   Info about balanced pinout is available at RSA website: Quote:   Hope this solves your question,