still searching the threat,
I have only low Impedance earphone,
how is the result (compare to ak4490 ) after ak4497eq mod to low impedance ?
I know you never done this, but ....I still searching the threat ...
Hi!
There is no easy way to mod 4497 to have Lo Z output, due to the discrete buffer output stage, which is designed rather differently in 4495 version (which had 22Ohm output in latest revisions, by the way).
I removed output buffer and replaced it with OPA1622 on dip8 socket, but it’s a bit of hassle and looks like a car crash. Sound great though!
Having said that you can reduce output impedance by soldering 2x22 Ohm (or less) smd resistors on top of stock ones, they are 22Ohm.
But 22Ohm output impedance seems only to be an issue with BA-only earphones, DD and Hybrids do not seem to have significant issues with it.
Hope it helps.
Hi!
There is no easy way to mod 4497 to have Lo Z output, due to the discrete buffer output stage, which is designed rather differently in 4495 version (which had 22Ohm output in latest revisions, by the way).
I removed output buffer and replaced it with OPA1622 on dip8 socket, but it’s a bit of hassle and looks like a car crash. Sound great though!
Having said that you can reduce output impedance by soldering 2x22 Ohm (or less) smd resistors on top of stock ones, they are 22Ohm.
But 22Ohm output impedance seems only to be an issue with BA-only earphones, DD and Hybrids do not seem to have significant issues with it.
Hope it helps.
Hi!
There is no easy way to mod 4497 to have Lo Z output, due to the discrete buffer output stage, which is designed rather differently in 4495 version (which had 22Ohm output in latest revisions, by the way).
I removed output buffer and replaced it with OPA1622 on dip8 socket, but it’s a bit of hassle and looks like a car crash. Sound great though!
Having said that you can reduce output impedance by soldering 2x22 Ohm (or less) smd resistors on top of stock ones, they are 22Ohm.
But 22Ohm output impedance seems only to be an issue with BA-only earphones, DD and Hybrids do not seem to have significant issues with it.
Hope it helps.
Sure, but you were warned!
This has OPA1622 on both SE and balanced outputs, latest version has input caps removed too, sorry no photo and cannot make one unti late next week.
If you only have low impedance then I would get the ak4490-ak4495 versions, if you have high impedance grab the ak4497 . They are all pretty good, and are well worth the money, but there isn't a reason to take the high z version if you have low z gear, won't sound as good, too much distortion.
How about this which one is better SQ :
Ak4490/95 lo Z gear compare to Ak4497 hi Z gear ?
My point asking this is, does ak4497 is different animal ? Or just bit better compare to ak4495.
How about this which one is better SQ :
Ak4490/95 lo Z gear compare to Ak4497 hi Z gear ?
My point asking this is, does ak4497 is different animal ? Or just bit better compare to ak4495.
The ak4497 version is awesome with hi z gear and has a balanced out, but only meh with low z gear (distortion at high volume bass roll off), the ak4490 version sounds almost as good, with low z gear (very little distortion), the ak4495 version is said to be in between the two, it is lower impedance then ak4497 but higher then ak4490, I don't have it yet but plan on getting one later. So basically if you don't have high z gear get the ak4495, and if you have low z or hybrid iems try the ak4490 it works great with all my kz hybrids, and sounds better with my hifiman he4xx then the 4497 version, even using the balanced out, the 4490 still sounds better but then again I have some hi z gear that sounds amazing with the 4497 like my samsara's or toneking to400.
They are all different, the best sounding stock is the 4495 it also is the most versatile, I wouldn't recommend 4497 unless you have high z gear and if you only have iems and low z gear then the 4490 is your best bet, yes they are all different, they all sound good, but there all meant for different gear.
Or you can be like some shmuck, buy the 4497 version, then complain that it isn't that great and distorts constantly.
Sure, but you were warned!
This has OPA1622 on both SE and balanced outputs, latest version has input caps removed too, sorry no photo and cannot make one unti late next week.
Wait, if you remove all the output resistors, don't you eliminate the output impedance? A few pages back, I was suggested to remove the output caps so that I would be able to use multi-BA IEMs. When I asked about any problems that this would cause, I was said that practically no issues would occur, as long as I pluged in and out earphones with the player off
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