[LG V20 Accessories] Linsolv:
For reference, here's the playlist I used to compare. I didn't want to spend all day doing tests, so this is mostly stuff I can listen to while I work, but trying to hit as many different sound signatures as I could. I don't have any classical in my collection, though probably I could have used some. I listened to most of the playlist (skipped around a little getting details) on my laptop for a little while before picking up the phone. Probably going to do some listening with the S4 mini I've got on loan from my wife, too. Would have been nice to compare the Note7, but it's already back in T-Mobile's hot little hands. Played using the

Acoustic Guitar

Leo Kottke (FLAC)

Vaseline Machine Gun

Watermelon

The Fisherman

Earl Klugh (MP3 320)

Alice in Wonderland

Moon River

Autumn Leaves (VBR V0)

Country/Folk

The New Lost City Ramblers (MP3 320)

Talking Hard Luck

Don't Let Your Deal Go Down

Old Fish Song

Charlie Daniels Band (MP3 320)

The Devil Went Down To Georgia

Uneasy Rider

Anais Mitchell (M4A VBR)

Epic, Part I

Hey, Little Songbird

Epic, Part II

Pop

The Killers (MP3 VBR, not V0)

Mr. Brightside

When You Were Young

Sia (FLAC)

Chandelier

Eye Of The Needle

Elastic Heart

Electronic

Super Eurobeat Presents: Initial D Special Stage Non-Stop Mega Mix (FLAC)

Killing My Love

Running In The 90s

Grand Prix

Kavinsky (MP3 320)

Night Call

Night Runner (OGG VBR)

After Hours

Nuclear Countdown

Hip-Hop/Trip-Hop

KA (MP3 320)

Just

Wax Tailor (FLAC)

Exordium

From the Dark

As for my thoughts:

First, I was surprised that as far as I can tell, LG hasn't included any headphones. That seems weird. I'm glad now that I have a million bajillion of the things lying around because if I just bought this off the shelf, it would be a long wait for LG to send me my "only" wired headset option. At least a few weeks. Disappointing, but not a deal-breaker by any means.

Started with the Samsung headset, Hi-Fi DAC off. It's not super comfortable, not at all isolating. I'm still listening to the last couple tracks and I can easily hear myself typing with the volume at around... well, in the Hi-Fi volume it would be 45. I should note that it goes much higher (I believe the highest is 65 or 75) but 45 is where I would typically listen to music. Louder than that started to strain my ears a little. Louder is generally better for detecting little things in a song, but I don't want to suffer, and I certainly don't want to suffer for the time it takes to listen to a 90 minute playlist 4 times at painful volume.

(Incidentally, someone above complained that it wasn't as good as V4A--I haven't listened to V4A in a long time, but my recollection was that it does 2 things: EQ and boost. All their stuff comes down to highly advanced adaptive EQ and a volume boost. Essentially an Instagram filter for your audio. That's all you really can do with a software solution, so I don't blame V4A's team, but what we're looking for with a hi-fi hardware DAC is closer to putting your glasses on if you're near-sighted: increased clarity without changing or coloring the sound any more than necessary, including volume changes. That's what your choice of headphones and your EQ settings are for, not your DAC.)

Moved to the Shures next. The SE215 has a slightly bassy sound, IMO, much better for dance music than e.g. the Koss cans. Not quite basshead cans. I was impressed by performance, and volume. I felt "comfortable" for the first half of the playlist before checking the volume and discovering it wasn't at 45, where I'd wanted it--I had it at 30! Turned it up to 45, and I was at a point where it wasn't quite uncomfortably loud. Which is to say, these things can push power to a pair of headphones no problem.

Equally surprised that the Koss cans didn't have an equivalent bump in volume from what I'm used to (which is maxed out on the Note7, and remember that I'm nowhere near maxed out on the V20). Oh, sure, I could have turned them up, but I didn't. Clarity was as-expected. Much better, I think, than the SE215s.

What I'm looking for here is silence and separation. On the country tunes, in particular, you end up with a mandolin, banjo, and guitar all fighting for 'space' on the recording, so I was listening to make sure I could make out guitar chords from banjo rolls from mandolin... whatever mandolin players do. I'm sure they're very important musicians. The other part I listened to carefully was the intro to Chandelier; There's an etremely isolated snare in the beginning, and it should fade to nothing, not fade to sort-of-nothing. I didn't get that with the Shures as much as I wanted, but I did get it with the Koss headphones.

V-Modas don't do much to change my opinion. The bass is defined, clear, not boomy. I'd say the V20 seems to have a fairly balanced sound signature, which makes sense because that more-or-less matches what I've heard about the B&O sound signature. If the V20 DAC was developed with their input, that would make a lot of sense.

So in the end, I'd agree with kms108: