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The DX90 by iBasso . . . Sound impressions . . . . . . . New Firmware, 2.5.1 . . . - Page 97

post #1441 of 3032
About the O2 amp (and the DX90): I found that the O2 actually does sound slightly better than the built in amp of the DX90. 
I hear the differences mainly in the bass, it's a bit more solid when using the O2.
 
But, when using this setup with the BA4f (cIEMs), it's definitely not a matter of night and day difference.
post #1442 of 3032
Quote:
Originally Posted by Dave74 View Post
 

 We are also comparing the HP out on a $420 DAP and expecting it to compete with a $560 introductory price ($600 future price) dedicated high quality portable amp . Plus the size of the Pure ii is almost as big as the DX90 for just the amp so they have the space needed...  I also agree with your post:beerchug:  and I'm also loving my Pure ii after 1 day of use and still think it will improve further with break-in.

Actually, having external amp could have benefits as the amp is isolated for the other circuitry as it can bring the noise down.  And of course, you can change external amps as you upgrade.  So far, the Vorze shows that with the LOs, the DAPs just sound different, not one is better than the other. You know the amp is transparent, when you cannot say one is better than the other through it, but that they just have different characteristics. I know it's the amp section that can mess things up.  


Edited by SilverEars - 6/14/14 at 7:40am
post #1443 of 3032

I have been trying a totally different headphone flavor than what I am used to in Grado SR80i for a few days now. Not the hardest can to drive and at low gain, 220 + level in volume is all DX90 need to fully drive it.

 

Just as those people who are familiar with Grados, everything sounds very energetic. The mids and treble details are even more clear and crisp than on my T1 and ciems (Roxanne/JH16). The bass is certainly not big and doesn't go as deep as T1 but it is very tight, snappy and detailed. It's actually quite enjoyable and not certainly lacking from impressions I see around.

 

I was afraid that pairing a Grado phone with DX90 would make the treble sound piercing and harsh but it's not. The extra treble boost compared to familiar phones from Beyer do not add to any harshness but helps a lot with the very clear and crisp details.

 

It's really great for rock and pop songs I listen with most of the time. Not exactly for bassheads but for those who appreciate details the SR80i or any Grados is very good pairing with DX90.

 

Before I end up with the SR80i I tried all the phones in the Grado's prestige line up and they all sound similar to me at least on mids and treble. I notice that as you go up the higher models only the bass sounded different which goes a bit thin as you go up. This seems a bit weird. So for SGD 130 the SR80i is a good deal. Not sure what the even higher models ( Reference and Professional) can offer to improve on SR80i.

 

I'm just getting my ears adjusted with the cups sitting on my ear rather than around the aer. I might try a see how different cushions can affect the pairing with DX90.

post #1444 of 3032
Quote:
Originally Posted by headwhacker View Post
 

I have been trying a totally different headphone flavor than what I am used to in Grado SR80i for a few days now. Not the hardest can to drive and at low gain, 220 + level in volume is all DX90 need to fully drive it.

 

Just as those people who are familiar with Grados, everything sounds very energetic. The mids and treble details are even more clear and crisp than on my T1 and ciems (Roxanne/JH16). The bass is certainly not big and doesn't go as deep as T1 but it is very tight, snappy and detailed. It's actually quite enjoyable and not certainly lacking from impressions I see around.

 

I was afraid that pairing a Grado phone with DX90 would make the treble sound piercing and harsh but it's not. The extra treble boost compared to familiar phones from Beyer do not add to any harshness but helps a lot with the very clear and crisp details.

 

It's really great for rock and pop songs I listen with most of the time. Not exactly for bassheads but for those who appreciate details the SR80i or any Grados is very good pairing with DX90.

 

Before I end up with the SR80i I tried all the phones in the Grado's prestige line up and they all sound similar to me at least on mids and treble. I notice that as you go up the higher models only the bass sounded different which goes a bit thin as you go up. This seems a bit weird. So for SGD 130 the SR80i is a good deal. Not sure what the even higher models ( Reference and Professional) can offer to improve on SR80i.

 

I'm just getting my ears adjusted with the cups sitting on my ear rather than around the aer. I might try a see how different cushions can affect the pairing with DX90.

You mean the DX90 can drives the T1?

post #1445 of 3032
Quote:
Originally Posted by Jensenchua View Post
 

You mean the DX90 can drives the T1?

 

Yes it can. A more powerful amp is of course be better. But straight out of DX90 HO you can enjoy T1 as well.


Edited by headwhacker - 6/14/14 at 10:53am
post #1446 of 3032

Anything can drive anything.  The question is, can it be driven with authority?  My O2 can drive my LCD2.2 and HE-6(known to be hardest cans to drive ignoring electrostatics) to loud levels and surprisingly louder.  The problem is the sound when you compare to an amp that can drive them well.  Both sound better out of Beta 22.  Also, better headphones scale better with amps, and I noticed that the HE-6 does that, and also HD800 does as well.  LCD has it's limits I've noticed.  Also, loudness doesn't equate to well driven.  There are lots of arguments regarding, this has this much power output so therefore, it should sound loud enough and sound fine.  No, please listen first then write what you think.  This is not theoretical physics.


Edited by SilverEars - 6/14/14 at 11:00am
post #1447 of 3032
Quote:
Originally Posted by SilverEars View Post
 

Anything can drive anything.  The question is, can it be driven with authority?  My O2 can drive my LCD2.2 and HE-6(known to be hardest cans to drive ignoring electrostatics) to loud levels and surprisingly louder.  The problem is the sound when you compare to an amp that can drive them well.  Both sound better out of Beta 22.  Also, better headphones scale better with amps, and I noticed that the HE-6 does that, and also HD800 does as well.  LCD has it's limits I've noticed.  Also, loudness doesn't equate to well driven.  There are lots of arguments regarding, this has this much power output so therefore, it should sound loud enough and sound fine.  No, please listen first then write what you think.  This is not theoretical physics.

Couldn't agree more. 

The DX90 in regards of loudness can drive the akg k702 easily, but does it sound good? Nope, quite shrill in fact.

post #1448 of 3032
Quote:
Originally Posted by SilverEars View Post
 

Anything can drive anything.  The question is, can it be driven with authority?  My O2 can drive my LCD2.2 and HE-6(known to be hardest cans to drive ignoring electrostatics) to loud levels and surprisingly louder.  The problem is the sound when you compare to an amp that can drive them well.  Both sound better out of Beta 22.  Also, better headphones scale better with amps, and I noticed that the HE-6 does that, and also HD800 does as well.  LCD has it's limits I've noticed.  Also, loudness doesn't equate to well driven.  There are lots of arguments regarding, this has this much power output so therefore, it should sound loud enough and sound fine.  No, please listen first then write what you think.  This is not theoretical physics.

 

 

Quote:
Originally Posted by Marleybob217 View Post
 

Couldn't agree more. 

The DX90 in regards of loudness can drive the akg k702 easily, but does it sound good? Nope, quite shrill in fact.

I agree as well... I notice a BIG difference with my Alpha Dogs when they are paired when they are paired with my BHA-1 as opposed to my portable setups.  With the BHA-1 the low end is much better controlled.  I also notice a difference using the LO of the DX90 with my Pico amps and Pure ii when paired with iems, although not as big of a difference as my other example.

post #1449 of 3032
Quote:
Originally Posted by Dave74 View Post
 

 

 

I agree as well... I notice a BIG difference with my Alpha Dogs when they are paired when they are paired with my BHA-1 as opposed to my portable setups.  With the BHA-1 the low end is much better controlled.  I also notice a difference using the LO of the DX90 with my Pico amps and Pure ii when paired with iems, although not as big of a difference as my other example.

Mr. Speakers had them hooked up to Liquid Glass, I believe at the meet.  He told me how much it costs.  :D  I liked them out of liquid glass.

 

As for the DX90, what volume are you all using for LO?  I heard it not be set to max, but lower.  Is there information as to why?  What volume for LO do you guys have it at?

post #1450 of 3032
Thread Starter 

The DX90 used as it was designed to be used, driving phones that its amp is meant to be used with, does a great job in my opinion. You don't pair a 5 watt tirode amp with speakers that need 200 or 400 watts. You pair amps with what they are meant to drive. To do otherwise invites mismatching.

post #1451 of 3032
Quote:
Originally Posted by SilverEars View Post
 

Mr. Speakers had them hooked up to Liquid Glass, I believe at the meet.  He told me how much it costs.  :D  I liked them out of liquid glass.

 

As for the DX90, what volume are you all using for LO?  I heard it not be set to max, but lower.  Is there information as to why?  What volume for LO do you guys have it at?

Liquid Glass... I'd imagine they would sound good out of one of those:tongue_smile:...  Out of my price range though:) I set the LO gain to around 210-230 depending on which earphone I am using.  This is where I find I get the best SQ out of the DX90.  It leaves the Pico Power or the Pure ii at about half volume... I am not that loud of a listener though.  The Dita's I have to set higher than my other earphones, I find they are a little harder to drive... I love the Dita's and Heaven VI out of the DX90:)  I do find the Dita's and Heaven VI to sound quite good out of the HO of the DX90 as well though.

post #1452 of 3032
Quote:
Originally Posted by SilverEars View Post
 

Mr. Speakers had them hooked up to Liquid Glass, I believe at the meet.  He told me how much it costs.  :D  I liked them out of liquid glass.

 

As for the DX90, what volume are you all using for LO?  I heard it not be set to max, but lower.  Is there information as to why?  What volume for LO do you guys have it at?

I usually set it at like 65%. I really have no idea how loud it should be though, I do believe there is an ideal signal strength for an LO?

I do really dislike that the LO volume is the same as the headphone out. I've had my eardrums blasted out a couple of times with my cIEMs set at volume ~230, while 170 is more than loud enough.

post #1453 of 3032

For maximum SNR using LO, volume must be set to 255. However, with very sensitive phones where I don't get much range with the amp's volume pot I set the DX90 volume at 245 - 250.

post #1454 of 3032
Quote:
Originally Posted by headwhacker View Post
 

For maximum SNR using LO, volume must be set to 255. However, with very sensitive phones where I don't get much range with the amp's volume pot I set the DX90 volume at 245 - 250.

That's exactly where I have mine set for my NT-6.  LO is sounding better than my ipod classic 6 gen.  

post #1455 of 3032
Quote:
Originally Posted by headwhacker View Post

For maximum SNR using LO, volume must be set to 255. However, with very sensitive phones where I don't get much range with the amp's volume pot I set the DX90 volume at 245 - 250.

I'm going to have to try this again with the Pure ii. I tried it with my Pico Power and found that it wasn't a huge difference and slightly preferred the setting at around 230. I found then I could adjust volume with either the amp of DX90. When setting the DX90 to 255 I would have to turn my amp down to around the 9:00 setting.

I wonder if an amp performs better at higher volume settings as opposed to lower volume settings?
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