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Sony's DSD-capable PHA-2 portable headphone amp/DAC - Page 21

post #301 of 576
I'm waiting for impressions of the PHA-2 with full-size headphones...

 

Power

  • Output Power : Maximum output (when using built-in lithium-ion battery):
    Approx. 165mW+165mW (8 Ohm, 10% distortion)
    Approx. 90mW+90mW (32 Ohm, 1% distortion)
    Approx. 25mW+25mW (300 Ohm, 10% distortion)

Source:  http://store.sony.com/gsi/webstore/WFS/SNYNA-SNYUS-Site/en_US/-/USD/ViewProduct-Start?SKU=27-PHA2

 

90mW into 32 Ohm is equivalent to only 58 mW into 50-Ohm LCD-2.

 

:popcorn:

post #302 of 576
I have AB Ing between

Source : Sony WMZ ZX 1 vs
iPhone 4S mod as my favorite dap
iPad Air my latest dap
Dac / Amp : Sony PHA 2 with HIGH gain setting
Headphone : LCD 3 with Stephan Audio Art balance 4 pin cable
Sennheiser HD 700 with after market cable from japan
Ultrasone Signature Pro with oyaide after market cable
Ultrasone Signature DJ with oyaide after market cable

Cable : 4 pin female to mini diy cable








7b3b2d58abd52498ab5fd2bcbf4eb61c_zps0170e892.jpg
0c275dc2df01da8d725abfeb48c8d83d_zps42530287.jpg

3ef23315ab77d7e3354774470892fe5e_zpsbdf95499.jpg
Edited by rudi0504 - 12/14/13 at 9:05am
post #303 of 576
iphone 4S > FiiO 30pin to 3.5mm > PHA-2 > JH13 fp with stock cable

What I learned today: Avoid interference with your PHA-2 and put the iphone into "airplane mode"

Background:
Listening today I thought that I heard some sound that produced a "crunch" or a faint "squelch" in my left ear. I turned off the music and am now sitting here listening to the extremely light hiss from the PHA-2 and a few random sounds... almost like a digitized crunchy "bip". Not as bad as when the old blackberries would mess with a conference speaker phone (if you remember back 5 years ago)... but not as offensive nor as loud as that interference caused.

This is coming from the PHA-2. It's not from the iphone or the FiiO cable because I continue to hear this with them both unplugged.

I am guessing that this could be a few things:
1) the PHA-2 is producing this sound (which would suck)
2) This is interferance in the neighborhood (I live in LA and there is just generally a ton of stuff around)
3) The iphone itself!
post #304 of 576
Probably some EMInor something like that eh? Whenever a input my old I phone and iPod back to back, it produce a lot of hisses.
post #305 of 576

PHA-1 vs PHA-2 with Z walkman.... who wins?

 

Also, Can PHA-2 bypass Z walkman dac?

 

Thanks in advance!

post #306 of 576
Quote:
Originally Posted by AUDIOBREEDER View Post

PHA-1 vs PHA-2 with Z walkman.... who wins?

Also, Can PHA-2 bypass Z walkman dac?

Thanks in advance!

I have only ZX1 Walkman
PHA 1 I had owned , I don't like PHA 1
Now I own PHA 2 , sq is much better than PHA 1
If the amp section are the same , could be PHA 2 has better dac section
PHA 2 can by pass dac section from my WM ZX1 with hi res stock cable in excellent sq

IMO

Black cable between WM ZX 1 and PHA 2 is hi res stick cable

The white cable between my iPad air and PHA 2 is USB to lightning cable from japan

bf92e8c42aa3223f9fd658483627d79b_zps9e9a3727.jpg
Edited by rudi0504 - 12/14/13 at 7:12pm
post #307 of 576
Answer to the second question is "yes."
post #308 of 576

Thanks Rudi, the bypassing part to sony walkmans is what makes PHA-2 stand out.

I have the PHA-1 and use it as line out with X & A walkmans.

 

BTW, wont your PHA-2 heat up if you wrap it in such a thick layer of cloth?

 

 

Quote:

Originally Posted by rudi0504 View Post


I have only ZX1 Walkman
PHA 1 I had owned , I don't like PHA 1
Now I own PHA 2 , sq is much better than PHA 1
If the amp section are the same , could be PHA 2 has better dac section
PHA 2 can by pass dac section from my WM ZX1 with hi res stock cable in excellent sq

IMO

Black cable between WM ZX 1 and PHA 2 is hi res stick cable

The white cable between my iPad air and PHA 2 is USB to lightning cable from japan

bf92e8c42aa3223f9fd658483627d79b_zps9e9a3727.jpg

 

 

Thanks Zilch, now my quest for PHA-2 begins!

Quote:
Originally Posted by zilch0md View Post

Answer to the second question is "yes."
post #309 of 576
Depending on the efficiency of your headphones, you might want to bypass the PHA-2's amp, in addition to bypassing the ZX-1's DAC.

;-)
post #310 of 576
Hi Audiobreeder

Thanks Rudi, the bypassing part to sony walkmans is what makes PHA-2 stand out.
I have the PHA-1 and use it as line out with X & A walkmans.

BTW, wont your PHA-2 heat up if you wrap it in such a thick layer of cloth?

You are welcome

I wrap my PHA 2 to avoid scratches , it is warm
post #311 of 576
I want share my experience with sony WM ZX 1 and sony dac amp PHA 2 as follow

WM ZX 1 works as USB DAC with :

Centrance Hi Fi M 8
Theorem use 3rd party app USB AUDIO RECORDER

Note : if connect your Sony WM ZX 1 via USB DAC to Centrance Hi Fi M 8 doesn't works
Please turn OFF your Sony WM ZX 1 and turn ON again , it will works


WM ZX 1 doesn't works as USB DAC with :

Sony dac amp PHA 2

I tried with optional Sony USB DAC WMC NWH 10 with stock sony male USB to micro USB
The result is the sane NO SOUND


Sony WM ZX 1 pair with sony PHA 2 only use Sony hi res cable


Use USB DAC WMC NWH 10 can NOT charge WM ZX 1 , I can charge with Sony stock USB to sony connector

I hope this can help
post #312 of 576
Quote:
Originally Posted by RAFA View Post
 

 

 

That and I installed this little player from Sony

 

http://www.sony.jp/support/netjuke/download/hi-res-ap-win/

It uses the Sony ASIO driver and sends everything in DSD to the PHA2.

 

 

 

Setup:

Win 7 using the Sony His-Res Audio Player > USB to USB micro cable > Sony PHA-2 > JHA 13's (fp)

 

Sheeeeesh RAFA. I finally got around to listening to that player you linked with the PHA-2 today. I think I'm really in trouble now b/c now I know I'll be chasing this sound constantly, and poor recordings are really beginning to bum me out.

 

Thanks very much for the link to that player! Listening to a flac rip from Bill Evans' "The Complete Village Vanguard Sessions" is great. The intro of the onstage chatter and then into the launch of Gloria's Step... it's amazing. Now this is a WIDE sound stage.

 

Next step is to do an A/B for the same material as played out of an iPhone 4S using the Onkyo player.

post #313 of 576

Does anyone know if jitter would be cleaned up using a Dragonfly USB DAc in line prior to the Sony PHA-2?

 

For instance, the initial setup is this:

Computer running Win 7 using the Sony His-Res Audio Player Applications > USB-toUSBmicro cable > Sony PHA-2 > JHA 13's (fp)

 

- In this initial setup the clocking is coming from the computer itself and the DAC/ AMP is located in the Sony PHA-2

 

What if I were to do this?

Computer running Win 7 using the Sony His-Res Audio Player Applications > Dragonfly USB > USB-toUSBmicro cable > Sony PHA-2 > JHA 13's (fp)

 

This would mean that the Dragonfly would be providing clock out of the USB port rather than the computer itself. It would also be acting like the DAC prior to the Sony every receiving the signal.

Would this make sense to do in order to cut down on jitter out of the computer/ caused by the clock at the computer itself?

post #314 of 576
Quote:
Originally Posted by fkrieger View Post
 

Does anyone know if jitter would be cleaned up using a Dragonfly USB DAc in line prior to the Sony PHA-2?

 

For instance, the initial setup is this:

Computer running Win 7 using the Sony His-Res Audio Player Applications > USB-toUSBmicro cable > Sony PHA-2 > JHA 13's (fp)

 

- In this initial setup the clocking is coming from the computer itself and the DAC/ AMP is located in the Sony PHA-2

 

What if I were to do this?

Computer running Win 7 using the Sony His-Res Audio Player Applications > Dragonfly USB > USB-toUSBmicro cable > Sony PHA-2 > JHA 13's (fp)

 

This would mean that the Dragonfly would be providing clock out of the USB port rather than the computer itself. It would also be acting like the DAC prior to the Sony every receiving the signal.

Would this make sense to do in order to cut down on jitter out of the computer/ caused by the clock at the computer itself?

 

I don't own a PHA-2 but isn't it running on asynchronous USB mode and should be mostly jitter-free?

 

Anyway, Dragonfly is an USB DAC that only output analog signal. It doesn't do USB output and therefore there is no jitter reduction to speak for. You seem to be worrying about an non-existing problem.

post #315 of 576
Quote:
Originally Posted by fkrieger View Post
 

 

Setup:

Win 7 using the Sony His-Res Audio Player > USB to USB micro cable > Sony PHA-2 > JHA 13's (fp)

 

Sheeeeesh RAFA. I finally got around to listening to that player you linked with the PHA-2 today. I think I'm really in trouble now b/c now I know I'll be chasing this sound constantly, and poor recordings are really beginning to bum me out.

 

Thanks very much for the link to that player! Listening to a flac rip from Bill Evans' "The Complete Village Vanguard Sessions" is great. The intro of the onstage chatter and then into the launch of Gloria's Step... it's amazing. Now this is a WIDE sound stage.

 

Next step is to do an A/B for the same material as played out of an iPhone 4S using the Onkyo player.

 

 

Ok, so you can hear a difference too. While with Jriver you can choose the output mode, that mini player, I think, is fixed DSD.

 

Sadly with foobar, I cannot get the Sony drivers to work...

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