HeyManslowdown97
500+ Head-Fier
The price of dual AK4493 T1 is also dropped now, not as expensive as what it used to.
With the better LDO’s don’t really think it’s worth upgrading if you already have the DSD Pro T1 Ak4497eq
However, if you have a Z3 with the Ak4493 it’s definitely worth looking at the Ak4493 2x and replacing the LDOs and the MSOP as an upgrade.
You can always get the module ak4497eq as the prices go down.
Also, wanted to mention that it’s not just impedance issue with matching headphones; it’s also sensitivity. Once I put the high PSSR LDOs lowering floor noise DBs and fixed the Power Rails magically the op amps started to perform like they should.
“THE PROBLEM: Put simply, a lot of headphones are not well suited for a lot of sources and vice-versa. There’s more involved than just using headphones with the right impedance. One of the most important things to consider is the sensitivity (efficiency) of the headphones.“
http://nwavguy.blogspot.com/2011/09/more-power.html?m=1
The audio signature is there but the amps sound more powerful and able to handle frequency response.
Which leads me to my last point highly compressed MP3 files don’t have the best frequency response and dynamic range so it’s something to considered when listening to your Zishans.
“Remember that the bit rate for uncompressed, CD-quality audio is 1411kbps. The initial goal of MP3 was to produce 'acceptable' results when coding at 128kbps. That's a data reduction of over 90 percent, producing a file about an 11th the size of the raw 16-bit, 44.1kHz PCM file.“
https://www.google.com/amp/s/www.so...ues/what-data-compression-does-your-music?amp