Tassie Devil
100+ Head-Fier
I am not comparing the A17 to the A25, I am comparing the original A17 I bought in October 2014 to the A17 Sony sent me as a replacement a few days ago. I can't compare the A17 to the A25 because the boneheads at Sony won't make it available in Canada to listen to!! But, based on the several online reviews for the A20 series I have read there is no difference between the A17 and the A25 as they both use the same hardware. Except of course for the added circuitry for the Sony only noise canceling feature which to me isn't worth paying for. The EQ changes are likely just a change in the firmware which could have been added to the A17 had Sony chosen to.
As for differences between the A17 and A25 I would personally rather have 64 GB of internal memory vs 16 GB, better EQ (no use to me) and Sony's noise canceling feature (also of no use to me). It seems silly to me to buy an A25 if I basically have the same thing already in an A17 minus features I don't even need and less internal memory. I sure as heck won't spend another $300 + for a minute improvement in bass if in fact it can be heard. Hearing it or not will have as much to do with the headphones as anything else.
Tell me, do you hear better bass with or without the EQ engaged comparing the A25 to the A17? If the difference is via EQ then the normal bass is likely the same and not a fair comparison.
Personally I find engaging the EQ especially one that is software based hurts the sound more than it helps. Anything that is added to the signal path will detract from the sound more than any artificial enhancements the EQ or other manipulation will add. To me if your iems/headphones need an EQ to sound good then you need new headphones not another DAP with better EQ settings.
Headphones/iems will always make the biggest difference in sound quality than a DAP will especially if the two DAP's are basically the same.
Not so sure they are exactly the same. A new A25 arrived yesterday and the AQ was startling. Note I have two A17s, a ZX100 and again have an A25.
Most of the SONY sound settings ruin the AQ but the two custom options are handy and are different in the A25.
I agree the internal 64GB is very nice but adding a 200GB card (they are coming down nicely in price now) means the A25 can hold more than 700 albums. A similarly equipped A17 holds 150 more. Whether or not that is significant is a personal choice and must admit that the ZX100 with a 200 GB card holding over 1100 albums has great allure. If you are downloading hi-rez then capacity does become even more important.
Bottom line is that both the A17 & A25 yield excellent AQ, have great battery life and offer a simple operating system so are excellent value. Coupled with the very very good HiFiMan 400s headphones one has a music playing setup under $AUD700 which could need ten times that amount to yield similar AQ via amps and speakers. Yes the ZX100 is even better and demands even better headphones to appreciate its capabilities but is still heaps less expensive than the amp & speakers alternatives.