Sony nw-zx507 Impressions
Here we are with another DAP. As I start this review I am kind of disheartened by the lack of quality I have seen in daps. Let’s see how the nw-zx507 stacks up. As usual, I am listening with the Dunu Zen.
As usual, there is a TLDR at the end.
Unboxing
This isn’t something I care about, but sony knows how to package a product. This is small, elegantly designed yet quality packaging. Go sony.
First: The packaging is no bigger than necessary to get the job done. Second, it’s a cleverly packed and layered box that opens on a hinge. Third, it is exceedingly simple. Fourth, everything has a nice tidy space.
The dx300 was this “different to be different” box that had no particular value. It did do the job, but was much larger than necessary. I honestly don’t remember the dx160 unboxing.
Seriously, if unboxing is important to you, just buy sony. It’s a great experience.
Size and Build
The size is really really nice. It’s solidly built yet is entirely comfortable in a hand. And, amazingly, I think I can use it one handed in either hand. The play/pause button and the volume up button have a physical bump on them making them easy to locate.
All the edges are rounded off and smooth. Remember when Motorola flip phones fit wonderfully in your hand and you can just use them? No? Well, it used to be like that. This is like that.
The DX300 was a crazy brick. This fit in my pocket with my other stuff. The dx160 was completely awkward to use one handed and was still bigger than this (didn’t fit in said pocket with other stuff). Its size and physical ease of use puts those others to shame.
The Interface
It’s the typical android interface. It is fairly bare despite having google play onboard. The only real strike against it, is like most daps its SOC is underpowered. So it is not exactly smooth like the dx300. I do think it is a step up from the dx160, but that is entirely memory.
But right from launch, it got me setup with my google id and everything was much smoother than the others. It’s almost like Sony cared about the experience. I know I am getting used to these DAP android devices, but I really didn’t have random issues with this one. No entering wifi passwords three times or having apps fail to launch. It just wasn’t very snappy.
Buttons
Buttons are WORKING. Crazy that a a media player has buttons on the outside that work. It’s almost like I have a CD player again. Well, almost. Oddly, the play/pause button doesn’t work in amazon hd if I am in the app and the screen is on. It works if I am not. Crazy. Not a deal breaker for me though.
The volume buttons are way better than the iBasso wheels. Micro adjustments are a tap and you can hold them to move quickly. It’s a genuine pleasure to use them to control volume.
I have been randomly pausing, playing and skipping tracks all night. It’s so satisfying to have this work. The dx300 and dx160 made me want to throw them out a window. Every time I needed to pause it was like “What? buttons? What are those?”
I will say that the skip buttons are logically reversed to me. On the outside of the player the “next song” button is on top and the “previous song” toward the bottom. I think my brain thinks of these as traveling through the song list. Advancing to the next song means going down to the next track. This isn’t a big deal, I have already adapted. But I will note that the dx300 had a setting to let you flip this to your liking.
Have I mentioned that I have used it for hours without having the buttons completely fail?
Better than iBasso: Big huge check.
EQ
Let me start by saying EQ is a dirty word to me. Every time I try it or an oratory profile or other preset, I tend to cringe. It’s like you touch a slider and I feel like everything turns to plastic. It’s unreal.
I played with it’s EQ, and something weird happened: I didn’t hate it. In fact I liked some of the preset selections. Even messing with the sliders didn’t immediately result in plastic sound to me. I have no idea what/why it’s different here, but it doesn’t seem offensive at all. Weird. I would love to understand why.
Power
This here. This is possibly the flaw. This thing is 200mw into 16 ohms. It is enough for the Zen, but honestly? I am not sure it could have driven the Audeze Euclid which demanded standard mode on the iDSD micro signature. I am not really keen on spending $800 on a single IEM DAP. Especially when the Qudelix has 240mw into 32 ohms (measured 210mw into 50ohms).
The reason I like a lot of headroom in amps is if you start pushing them, most amps become shouty and weird as you approach their limits. The zx507 definitely shows this on the Zen. If you push really loud volume, the sound becomes tinny and weird.
Sony, pay attention. This thing is underpowered. It should not be beaten by something the size of a nine volt battery. Ok? Got it? And, yes, this may trigger a return. I have a hard time justifying this price when it may very well only power one headphone for me and get beaten by a battery.
Speaking of batteries.
Battery
I have been listening for about 2 and a half hours and the battery is down to 54% from a full charge. That is not a good sign. If this player with 20 hours of battery life ends up with 5? I won’t even need to think about it: it goes home. Ba bye. This will not get me through a day. And since it buzzes while charging, that is a non-option (see below). I turned off all the fancy stuff that eats battery too (or, more accurately, I didn’t turn them on for this session)
I will see if this is a problem over more usage. If I can’t get through a normal day, without re-charging, it will be a deal breaker.
Sound
I swear the bass is doing something different in a good way. Tighter maybe? Just slightly more emphasized? I really can’t tell but it was the first thing I thought when I turned this on.
All those other pesky frequencies
There is an odd dichotomy as it feels both harsher and softer. I think female vocals in some of my music, which are already pretty intense, are coming off just a touch harsher than normal. At the same time, everything else feels cozy and rounded off.
But here’s the thing, I really wanted to listen to it more. I didn’t want to try and a/b it much with the other amps. It was like, the sound was confident in a way that made me think “well, I don’t really care what it is, or if I am imagining it, I am just gonna stay right here and listen to this.”
The sound is quite nice overall. I have not found sound to be a major reason for me to choose one piece of hardware in my chain over another one. Power makes a much bigger difference on competently executed products. Hiss/Buzzing is also far more important. And, of course, the headphones themselves. I have heard the full range of solid state options, and I genuinely don’t have strong opinions. I slightly prefer the things that are less clinical/absolute detail focus. The dx300/iDSD Signature are preferred to THX generally, but not always. I liked the Fiio Q5s-TC sound a lot as well (ruined by the bluetooth buzzing that tried to kill me as well as the overall user experience ).
Buzzing
When I first plugged in my Zen, there was a buzz. Like bees zooming around my head. I think it was due to charging and some secondary interference. When I moved the unit, the buzzing would go away or become worse. So I think something environmental was effecting it. I have not heard any buzzing when running on battery.
Observations
It gets warm to the touch at times. And it seems random. Sometimes I pick it up to change a song and it is cool. Sometimes it’s very noticeably warm. I have been playing with turning on and off various sound features in some sessions. And it doesn’t matter at all. It was just surprising as the other daps I have tried have not really felt warm at any point.
The sound features (outside of EQ) seem to do nothing. DSEE Ultimate Ultra MX something something. At the end of the day I am just turning them all off (in the hopes that battery skyrockets).
I do wish the headphone jacks were on the bottom instead of the top. When you put it in a pocket, it would be much nicer if it went in upside down without a cable on the deep side. And if you aren’t putting this thing in a pocket, why do you own it? Get something bigger with more power.
Conclusion
Well, it’s easily the best DAP I have experienced. That is an unfortunately low bar. I think this DAP can work very well for those powering easy to drive headphones. I can certainly recommend it for the Dunu Zen. It works fairly well. It can’t get to the ear drum tickling that the iDSD Signature can, but that is stupidly loud.
It’s going to take a lot more listening to determine if it is the right DAP for me. My biggest concern is it isn’t future proofed at all. I don’t honestly know where this journey is going, but the potential inability to drive things like an lcd-xc is concerning to me.
Obviously, the deal breaker issues could kill it. If the battery starts behaving, then at least I know it works well for the Zen. It will get a bunch more time before I make any decisions. It is wonderful to have music off the phone.
TLDR
Great Packaging
Basically perfect size and very usable in either single hand.
Fits in a pocket nicely, even with stuff.
Headphone jacks could be placed better.
Underpowered for anything but easy to drive headphones.
Battery may be problematic. More testing to be done here.
Use while charging is a hard no due to buzzing most of the time.
Sound is wonderfully smooth. Has been occasionally harsh, but not sure it’s even the DAP.