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OPPO HA-2 Portable Headphone Amplifier/DAC Discussion Thread - Page 28

post #406 of 3970
Quote:
Originally Posted by NCSUZoSo View Post
 

Have there been any known flaws to this unit discovered yet?  I know Oppo very well in their AV players and have used them for years when selecting components for people who need help.

 

This is going to be my tax refund gift to myself unless someone can give me a reason to go with something else like the Sony NWZ-A17.

 

Also I'll be pairing this up with RHA MA750's, has anyone tried these IEMs with the unit yet?  Would yall recommend me using my Schiit Magni 2 with this unit if I want to power my SoundMAGIC HP150's (95±3DB at 1KHz/mw)?


I take it you know this isn't a player? I hope that doesn't sound insulting, but your post gives the impression that you are thinking it is a player.

post #407 of 3970

Lol, nah it's not insulting at all, I'm just an idiot.

 

I've been reading reviews for players that support DSD/DXD and I just assumed this was one by the size, details on DSD/DXD and price.  I hadn't actually read too much on it when I made my post. 

 

I knew that price was waaaaay too good to be a DAP by Oppo  :o

post #408 of 3970
Quote:
Originally Posted by NCSUZoSo View Post
 

Lol, nah it's not insulting at all, I'm just an idiot.

 

I've been reading reviews for players that support DSD/DXD and I just assumed this was one by the size, details on DSD/DXD and price.  I hadn't actually read too much on it when I made my post. 

 

I knew that price was waaaaay too good to be a DAP by Oppo  :o


No worries, I've stumbled into a discussion and made similar assumptions. I would like an Oppo DAP, and I'm sure they must be working on one if they don't already have one (I'll have to look).

post #409 of 3970
Quote:
Originally Posted by NCSUZoSo View Post
 

Have there been any known flaws to this unit discovered yet? 

 

No flaws yet here. Been 100% PnP .

post #410 of 3970
Has anyone paired this with either the Philips Fidelio X2s or B&W P7s? Impressions?
post #411 of 3970
Quote:
Originally Posted by NCSUZoSo View Post
 

Have there been any known flaws to this unit discovered yet?  I know Oppo very well in their AV players and have used them for years when selecting components for people who need help.

 

 

I too, bought this solely on Oppo's reputation (I had one of their older universal players from way back).  So far, this has been a great product.  I have noticed there have been a few occasions where I've apparently confused the unit.  Once the gain was extremely low, both on low and high that I could barely hear anything.  Turning the unit off and replugging it into my iPhone seems to have fixed it.  I've also had infrequent situations where nothing would play...most of which I chalk up to user error.  I switch between my EarPods and two channel rig a lot and sometimes I forget to change the "A-B-C" switch.  There are no lights to indicate the active input port so sometimes it's easy to forget.

 

Otherwise, I've been very impressed by the sound, build quality and overall performance.  I'm very impressed by the iOS integration and the fact that my Mac server seems to find it every time I hook it back up.

post #412 of 3970
Quote:
Originally Posted by gixxerwimp View Post
 

 

How about ER•4Ps?

 
I couldn't find sensitivity measurements for your FitEar MH335, but found these.

Not sure if the FitEar and 4PT curves have been normalized. The text says "ER-4S", so I don't know if they've used the P-to-S adapter.

 

Not sure if impedance is useful for trying to extrapolate comparative sensitivity.

 

And from http://en.goldenears.net/1389.

 

 

I'm looking for a portable DAC/amp to use with my ER•4Ps as well as "harder to drive" HPs that will benefit from amplification that I will buy in the future (considering HE-400i/560, PM-2/3, T1/5p).

 

In his review, georgelai57 View Post www.headfonia.com/oppo-ha-2-2007-all-over-again/2/, makes a comparison with the Cypher Labs’s Picollo DAC. Would appreciate any feedback from others who have used both.


That review was actually published by me. I wrote it. But george may have linked to it. Anyway, I don't have the ER4P and I don't remember how sensitive they were. I have heard them only once. The S will not hiss with the HA-2. Neither will most normally sensitive earphones out there. It is only really sensitive earphones that will obviously hiss. Most others will probably give up a small amount of background noise. 

As for the Picollo DAC: I do no own it, but I spent a long time with Picollo and a shorter time with the Picollo DAC. Both have perfect gain stages for IEM use. Low noise, great gain stages, and bullet-proof designs. Still, I think that the HA-2 has the upper hand in most non-sound areas. Soundwise, it is going to be up to personal preference. Both perform admirably.

post #413 of 3970
Quote:
Originally Posted by miceblue View Post


Sorry, I guess I'm still confused. XD
If I have a line-in input into the HA-2, meaning I'm using it as an amplifier, how is "volume functionality draws on the DAC itself" relevant to the analogue potentiometer I would be using to control the volume?


Finally I updated the article with link to the Oppo Knowledge base. I'm sorry for using such horrible language. You or another fellow explained it way better: your device's volume software control basically governs the volume of the HA-2, so a slide down of the volume slider on your iPod will affect total output of the HA-2. The way I used slave was totally off. I should have just said it in three sentences. 

Apologies.

post #414 of 3970
shigzeo View Post

 

You're fast, George.

georgelai57 View Post

 

Idle minds.

 

 
shigzeo View Post
 
gixxerwimp View Post
 

In his review, georgelai57 View Post www.headfonia.com/oppo-ha-2-2007-all-over-again/2/, makes a comparison with the Cypher Labs’s Picollo DAC. Would appreciate any feedback from others who have used both.


That review was actually published by me. I wrote it. But george may have linked to it. Anyway, I don't have the ER4P and I don't remember how sensitive they were. I have heard them only once. The S will not hiss with the HA-2. Neither will most normally sensitive earphones out there. It is only really sensitive earphones that will obviously hiss. Most others will probably give up a small amount of background noise. 

As for the Picollo DAC: I do no own it, but I spent a long time with Picollo and a shorter time with the Picollo DAC. Both have perfect gain stages for IEM use. Low noise, great gain stages, and bullet-proof designs. Still, I think that the HA-2 has the upper hand in most non-sound areas. Soundwise, it is going to be up to personal preference. Both perform admirably.

 

Thanks for your reply. Apologies for miscrediting your review. I think the confusion is understandable.

 

Just discovered the iFi Audio iDSD micro, which might be more future-proof in terms of powering headphones. Some reviews say sound quality on par with the Chord Hugo, at a fraction of the price ... :confused:

post #415 of 3970
Quote:
Originally Posted by gixxerwimp View Post
 Some reviews say sound quality on par with the Chord Hugo, at a fraction of the price ... :confused:

 

Some people also say the O2 actually sounds good :D:cool:

post #416 of 3970
Ultrainferno View Post
 
gixxerwimp View Post
 Some reviews say sound quality on par with the Chord Hugo, at a fraction of the price ... :confused:

 

Some people also say the O2 actually sounds good :D:cool:

 

The O2+ODAC looks like it would be a good candidate, except that it's not a mobile device. I'm looking for something I can carry around and use anywhere.

post #417 of 3970

Called OPPO today regarding the hiss and my SE846...

 

Unfortunately, I was informed that they have determined the HA-2 will hiss with the SE846... But whether or not you hear it does in fact come down to individual ears. I'll be damned, sounded very loud to me. But then again, I've been accused of having bat ears.

 

At any rate, OPPO has terrific customer service, they were very cool about issuing me a return label, no hassles at all. 

 

I'm bummed. It's a terrific little portable unit which I think has a fantastic sound when used with full-size cans and higher impedance IEMs. And one of the sexiest form-factors I've ever seen... It matched so well with my iPod Touch 5g silver/black, right down to the chamfered polished edges. But I'm looking for something for on-the-go with the SE846, so back it goes.

 

Pie-in-the-sky thinking, but how cool would a mid-product run update be, with sensitivity settings for IEMs, like the IFI Micro iDSD... What do you think, OPPO? Maybe an HA-2.2 next year? I'd be all over that!

post #418 of 3970
Quote:
Originally Posted by Earbones View Post
 

Called OPPO today regarding the hiss and my SE846...

 

Unfortunately, I was informed that they have determined the HA-2 will hiss with the SE846... But whether or not you hear it does in fact come down to individual ears. I'll be damned, sounded very loud to me. But then again, I've been accused of having bat ears.

 

At any rate, OPPO has terrific customer service, they were very cool about issuing me a return label, no hassles at all. 

 

I'm bummed. It's a terrific little portable unit which I think has a fantastic sound when used with full-size cans and higher impedance IEMs. And one of the sexiest form-factors I've ever seen... It matched so well with my iPod Touch 5g silver/black, right down to the chamfered polished edges. But I'm looking for something for on-the-go with the SE846, so back it goes.

 

Pie-in-the-sky thinking, but how cool would a mid-product run update be, with sensitivity settings for IEMs, like the IFI Micro iDSD... What do you think, OPPO? Maybe an HA-2.2 next year? I'd be all over that!


Glad to hear that you benefited from good customer service. Sorry that the hiss is just too much for you. 

 

We should reiterate this: those that have problems with hiss, have problems with hiss with anything. It is the major reason that I prefer NOT to use amps or external equipment, and that I cannot use AK100 unless through certain earphones. I buy equipment based on how little it hisses. But prior to old batbones above me, I was considered headfi's hiss king. I may have to pass my crown on. 

Again, the amount of hiss the HA-2 generates is on par with:


iPod 5G
iPod nano 1G (or a bit less)
AK100

It is MUCH lower than:

Cypher Labs 720
ALO Rx
PortaDAC 1866
and many more

It is a great device.

post #419 of 3970
My HA-2 arrived this morning from Custom Cable, excellent service only ordered yesterday afternoon.
Its a lovely looking unit and is so slim compared to my last DAC(Sony PHA2).
Only tried it for an hour or so this morning but very impressed. Used it with my Note 4 and AKG K3003i. No hiss for me with the k3003. Sounds great, takes the Note 4 to a similar level as the DX90.
post #420 of 3970
@shigzeo - this is confusing. You say you prefer not to use amps because of hiss yet I've heard others say that by pairing a DAP with an amp, they eliminate the hiss. I
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