HD 660s Build Quality

Submitted by Dry-Strength1398 t3_10qi6fu in headphones

First pair of HD 660s. I noticed that one of my connectors was pretty damn easy to insert/remove. It still takes a bit of effort, but it was leagues easier than the other connector.

I've owned a few Senns before (600, 650), but I've never had such a disparity between the connector "grip" on the same set of cans.

In terms of sound, there is a very much noticeable channel imbalance. The left cup was 10-20% louder than the right cup. The cups themselves produce this horrible clacking. Turning my head? Clack. Moving my jaw? Clack.

Everything else was fine - typical, reliable Sennheiser plastic build.

EDIT: Returned the first pair. Replacement cans came. Tried them, and the first thing I noticed was that the channel imbalance was even MORE intense than the last ones. I have no idea what Sennheiser is doing, but maybe it's the fault of my seller selling open-box/returned items as "new".

If you happen to hear any creaking when you move your jaw with the headphones on, adjust the bands to be one click shorter (repeat if necessary). If the bottom of the cups touch anything that moves, a horrible cacophony of clacking and creaking ensues. This is my experience, at least. If this doesn't work or becomes too uncomfortable, I personally suggest moving the cups "forward". It reduces the creaking significantly for me, though it doesn't get rid of it entirely.

EDIT 2: Got the third pair after returning the second ones. They're just alright. The right cup is slightly louder than the left cup, but not enough to be a problem. Not going to be returning this one, as I simply don't have the patience. I will fix it on my system with EQ software if I get really annoyed, but, otherwise, it's fine.

Good luck out there, folks!

EDIT 3: Before anyone thinks I hate the product, let me make it clear: I don't. I absolutely adore the sound that these cans offer. Very easy to listen to. I could put these on and get lost for hours. My personal favorite of the Senn 6 line so far. The first return would have been the last if I disliked them.

1

Comments

You must log in or register to comment.

Dry-Strength1398 OP t1_j6qkl1t wrote

It seems my case is not very common, but if you purchase a pair of these (or ANY audio product), I highly recommend purchasing from a seller with a good returns policy. I honestly don't know why so many audio products have QC issues these days.

7

Exact3 t1_j6qxtjj wrote

>I honestly don't know why so many audio products have QC issues these days.

Gotta maximize those profits and cut every corner you can lol.

4

LeBronto_Raptors t1_j6qg29x wrote

Mine is fine, could be your unit or the cables itself.

3

Dry-Strength1398 OP t1_j6qja12 wrote

It's probably the unit. I tested with the stock cables and my custom ones. I'll probably return them and pick up another pair.

3

TheOneWhoReadsStuff t1_j6zt1yu wrote

Make sure you aren’t using the same wire.

I’ve had channel imbalance before on some beyerdynamics that was due to a bad cable. I was correcting it manually for months. I bought a cheap Chinese cable out of curiosity, and viola!, the headphones sounded perfect.

2

Dry-Strength1398 OP t1_j6zvewl wrote

Yeah, I've been switching between my custom cable and the quarter inch that came with the cans. They all have had the same issue with both cables, so I'm fairly sure the cans were the problem. Hopefully the cables I used thus far haven't all been defective, though. That would suck.

1