I think when i connect my headphone to Lo port, sound more spacious and more forward than using Po out with LME49720

Sometimes, i rather choose listening from LO, i think sometimes the quality even better than PO

Try to change stock cable with good one, maybe it help..

So do you choose 4558 rather than 5532 then?

JRC4458 or 4558?

Read the article on internet, lme49720 same as lm4562

Well, i got delays too, but i think below 1 s, maybe 0,5s and not bothering at all. I'm not using stock Z1 cable, but when i change to stock cable Z1, the delays appear but its still ok Still using old firmware..

Well, i have active speaker, the stock amp is JRC4558, then i bought 3 op amps, OPA2134, LME49720NA, AD825 dual browndog, first time i use OPA2134, than swap it to LME49720 NA than AD825. Finally, i choose AD825 on the speaker, because i like how it sound, the second choice is LME49720 NA and...

I think HA is better Go for HA.... Op amp rolling, rolling your money from your wallet, good for your ears but not for your wallet and your wife... kwkwkwkwkwk... :ksc75smile:

Wow $46 for muses02?, almost two Z1...

is it worth swapping to Muse02?, before using Muse02 what kind of opamp do you use? how much Muse02 cost?

Well, i dont know about delay, not bothered by delay so far Is it bothering you?

Dear guys, i want to ask you, is it normal if LME49720 feels hot?, Zishan Z1 in open box now, is it safe i put the box back again? The LME49720HA without heatsink, affraid if overheating..

Out of city right now, the only amp i got only LME49720HA, so i choose LME49720HA... But when i return to my house, i'll compare it with dual AD825 browndog

Done, changing to LME done, enjoying new amp