I agreed with your post, only stating that not all headphones are able to be driven by a balanced amplifier. I am sorry if I offended you, far from my intention.

Yes, of course, as long as the headphones have four-wire wiring. If they only support three wires, they must be powered with an unbalanced amplifier.

Sorry for my bad writing. Writing by hand on the iPad is really annoying.

As long as the manufacturer respects the dB definition for power, which is dB = 10 x log10 (W1/W2) and 0 dB of volume gives amplifier's max power, -14 dB implies that W1 is equal to W2/25.11, so if W2 = 7,2W, then W1 is equal to 287 mW.

If 0dB implies max power on the DX9, the power corresponding to -14 dB is 287 mW

This is simply not possible, as long as the power is measured at the headphones impedance… or the manufacturer is lying

Don't worry about whether it provides enough voltage (or current). An amplifier that gives x watts at a given impedance provides the current and voltage needed to achieve that power. If it did not, it would be impossible for it to deliver the specified power.

My K5 Pro (AKM version), connected thru USB to a Win 11 PC doesn’t have such problem, but I don’t use the Win audio stack. Only ASIO audio protocol with Foobar app for local files and Qobuz Studio Win app for streaming.

After looking for a good cable supplier, I ended up with vendor EachDIY Earphone Parts Store from Aliexpress. Their cables are soft, close to zero microphonics and no shape retention memory. This is the one I bought for my Aeon 2 Noires...

I see, quite similar. Thanks!

Which has the highest treble, Ananda Nano or Arya Stealth Magnets?

Unbeliable! This secrecy is out of place today.

The amplifier that comes with the X1 headphones (SRM-270S) has only unbalanced (RCA) inputs.

According to Qobuz: “The Airplay function on iOS only allows Qobuz to be used in CD quality due to Airplay’s restriction to 16-bit digital audio files at 48 kHz.” https://help.qobuz.com/en/articles/10209-how-do-i-experience-hi-res-on-ios

As a former ten-year owner of a Stax SRS-3030 system, I am glad that Stax has released a reasonably priced amplifier + headphone set. I wish I had the chance to listen to them.