SONY XBA-4 vs new XBA-40?
Dec 19, 2012 at 4:19 AM Post #5 of 129
I didn't manage to try the sound but I have had heard some head-fier who is fortunate enough to audition it said that the sound are much clearer compared to XBA-4

Speaking from a owner of XBA-4. I would like to let you know what, the highs can be metallic at high volume & I would highly recommend using it with a source with output impedance lower than 1. XBA-4 is a very picky source.
 
Dec 19, 2012 at 10:11 AM Post #7 of 129
As I read before ordering my XBA-4 its appearance and cable changes, but for me the drivers remains the same.

XBA-4 :
Type : Quad-balanced armature type sealed
Sensitivity : 108dB
Playback frequency band : 3-28,000 Hz
Impedance : 8 Ω
Maximum input : 100mW
Cord length : Ritz 0.6m OFC wire (neck chain)
Input Plug : Fri-lated stereo mini plug
Mass : About 8g

XBA-40 :
Type: Sealed Quad Balanced Armature type
Driver Unit: Quad Balanced Armature
Sensitivity: 108dB
Frequency Response: 3-28,000 Hz
Impedance: 8 Ω
Output sound pressure level (sensitivity): 100mW
Cord length: 1.2m PC-OCC Cord
Plug: L type stereo mini plug (gold plated)
Weight: 8g
 
Dec 26, 2012 at 4:02 AM Post #8 of 129
In the latest specifications from Sony, they show that the XBA-40 have a different impedance at 12 ohms !
 
Type Closed, Quad Balanced Armature
Driver Unit Quad Balanced Armature
Sensitivity 108 dB**
Power Handling Capacity 100 mW (IEC*)
Impedance 12 Ω at 1 kHz
Frequency Response 4 Hz – 25,000 Hz
Cord PCOCC (Y-type)
Cord Length 1.2 m
Plug Gold-plated L-shaped stereo mini plug
Weight (Without Cord) Approx. 8 g (without cord)
Supplied Accessories Hybrid silicone rubber earbuds* (SSx2, Sx2, MSx2, Mx2, MLx2, Lx2, LLx2), Noise isolation earbuds** (Sx2, Mx2, Lx2), Cord Adjuster (winds cord up to 50cm) x 1, Clip x 1, Carrying Pouch x 1
 
Dec 26, 2012 at 5:51 AM Post #10 of 129
Hope so it will be the case, the XBA-4 are good IEM when correctly feeded
wink.gif

 
Dec 27, 2012 at 12:41 AM Post #11 of 129
It's not picky of source because of it's low impedance, that's only part of the story. It's impedance phase has a pattern. If these new ones indeed have more resistance, it means it has a bit less bass and more treble. I know this because I know the pattern it follows. 
 
The other XBA series are likely about the same in their new versions. See this for the XBA1 and XBA10 comparison. As shown, pretty much the same...
 
 

 
Dec 27, 2012 at 6:15 AM Post #12 of 129
Yes its only a part of the story, I have used the XBA-4 on the F807 with an impedance of 16 3-4 ohms and in the iBasso D7 with less than 1 ohm of impedance, not so much differences to listen, both drive well the 8 ohms of the XBA-4.
 
Dec 27, 2012 at 9:44 PM Post #13 of 129
The higher impedance XBA3, 2 and 1 change just as much with more impedance by it's source. That's because their impedance curves are about the same. 
 
Dec 29, 2012 at 5:17 AM Post #14 of 129
I've been meaning to get these, so have been looking up for specs in the various websites.
It seems that the different regions specified different impedance for them:
Sony Asia Pacific / Singapore / Malaysia - 12 ohms
Sony Japan / Hong Kong - 8 ohms
Sony China - 16 ohms
 

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