henkie196
100+ Head-Fier
- Joined
- Apr 3, 2015
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There is no mid-high bump. It could be that you are sensitive to shifts in stereo image as per the nature of your earphones under load. But there is no frequency shift.
DAPs will always be the most pure signal. No amp, no matter how good, can ever surpass the signal of the source, no matter how crap the source is.
An amp unloads the output of your device. Depending on your source, it can be worse. PURE II is one of the best-performing portable amps out there, but it can only perform up to the signal it is fed. DX90 has a very good headphone output and a very good line out. To be honest, to beat the DX90... I'm not sure what you would need. In terms of raw power, PURE II will bey far outstrip the abilities of the DX90, but in terms of driving the same earphones or headphones for resolution, I'm not sure it is possible to beat the DX90 tit for tat.
Think of an amp as lube. It helps sticky situations, unloading the bundles toted by poor sources, but it can only perform up to the signal fed it. DX90 is one of the best sources.
A bit late to respond, but I was waiting to see if Vorzüge would give any feedback on the Pure II unit I recieved. But no feedback on the defectiveness or not of the unit, just a refund, minus some deduction for some tiny scratches that I'm pretty sure must've already been there when I got the amp. Or it is so sensitive to scratches that putting it on a wooden table, the touch of the rubber cover of the DX90, or the two transports in the velt pouch is causing scratches. I also get suspicious when the cost for the scratches more or less match the shipping costs that they were supposed to not charge me for since they sent a different unit than I ordered, but that may or may not actually have been a coincidence.
Either way, there was a definite mid-high bump to my ears, and with the direct refund from Vorzüge, I can only assume that it was not a specific feature of the amp I recieved. If I used it in combination with the FiiO X3, the mid-high bump somewhat countered the rather dark and V-shaped sound of the X3, so I suppose it would not seem so overtly coloured, depending on what source you pair it with. The mid-high bump also made it easier for me to hear the detail in that frequency range, which leads to an improved sense of clarity. Even if I'm not sure that there actually was a difference.
I can imagine that a shift in stereo image could cause headaches, but I'm not so sure that this would cause the pressure that I felt on my eardrums.
As for the use of using a Pure II in combination with a DX90, I mostly got it to see if I might need an amp for driving headphones such as the HE-560. I know that for my speakers (which are admittedly hard to drive), a good amplifier is definitely needed to keep the speakers under control. It appears this is not necessary for the DX90 and the HE-560 or the Vsonic GR07. At least not for my ears.
I have a white Pure II paired with my DX90. Looking at your picture I'm thinking I should have gone with the black on. SQ is what's important though
Do you hear much improvement in sound quality then? Just curious as I didn't hear much difference. What are you driving with it?