I've just purchased a Sony NW-A55 from Accessory Jack. I still own the A35 bought a couple of years ago from the same company, so can compare both side by side.
First of all, thank you to Accessory Jack. Delivery was quick and with no extra duty to pay. No volume limits like the EU models. Highly recommended company.
Let me get one thing straight. My major annoyance with the A35 was the fact that only the volume could be changed when listening via bluetooth headphones or speakers.
There was no way to alter the EQ or sound options unless the player was used with a wired headphone.
I Bought the A55 because a member on this forum who purchased one, stated that the sound could now be altered to preference while using bluetooth.
For anyone purchasing this DAP soley for that reason... DO NOT BOTHER! YOU CAN NOT!
EQ and other all ways to alter the sound are STILL DISABLED using bluetooth!
Why? Why? Why? Sony?
In fact, to be blunt, I'm finding very little difference in sound between the two units compared. Sound is still excellent but not a major difference between the two ( I use 1More Triple driver IEM's for wired use and Sony MDR-1ABT Bluetooth headphones for wireless sound )
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To be honest, if I'd have read the correct information about the lack of sound controls using bluetooth, I wouldn't have purchased, but Hey Ho...Never mind eh? The A35 Will be used in the car for infotainment.
Anyway, to get back to differences, the unit is slightly more rounded, but if you go for the black version, you will see that its more a bronzy brown black compared to the graphite/carbon black of the A30 series.
Personally, I prefer the old black colour.
I've not used the DAC now built in, but that may appeal to some members.
Vinyl processor function did not make a lot of difference to the sound.
A new 256gb card from Integral worked fine without any problems.
I updated the firmware to 1.01 with ease. Scrolling is fine but sometimes does stutter very slightly. In my opinion, still not as smooth as an iphone.
Battery life seems good.
Anyway, not a good upgrade for me. Hope this helps others thinking of purchasing.
Its still a cracking DAP for the money however, if its your first venture into HD Audio
Tony.