Well, they came in and here are my first impressions in the 770 LE thread: post #275
Basically, my 20-year-old DT770 Pro 600-ohm version sounds better. It's too bad, I was hoping these would be the upgrade that retires them.
Well, they came in and here are my first impressions in the 770 LE thread: post #275
Basically, my 20-year-old DT770 Pro 600-ohm version sounds better. It's too bad, I was hoping these would be the upgrade that retires them.

Well, they came in and here are my first impressions in the 770 LE thread: post #275
Basically, my 20-year-old DT770 Pro 600-ohm version sounds better. It's too bad, I was hoping these would be the upgrade that retires them.
You're probably just experiencing the infamous inconsistencies of the 770. Sounds like your older 770 is a "bass-heavy version". That would explain why vocals don't come through as clear on it. EQ'ing up the bass on the LE's (or down on the older 770s) would probably result in very similar performance between the two.
The Go-Vibe is the only portable DAC/AMP I've ever used, so I'm curious if the DT 990 will sound differently/better with a different pairing, or if perhaps I'm not 'maximizing' the DT 990.
Unless the Go-Vibe doesn't have enough power to adequately drive your 250 ohm 990s, which I doubt, then you probably wouldn't notice a difference with another portable dac/amp. That's assuming that the Go-Vibe is competent, which it looks like it is. Do you do any stationary listening, like at a desk? If so, you might look into upgrading to a higher quality solid state or tube desktop amplifier and possibly a higher end desktop DAC.

You're probably just experiencing the infamous inconsistencies of the 770. Sounds like your older 770 is a "bass-heavy version". That would explain why vocals don't come through as clear on it. EQ'ing up the bass on the LE's (or down on the older 770s) would probably result in very similar performance between the two.
That's possible for sure. I'd prefer to use EQ as an optional final tweak, though, not as a necessity for enjoying the headphone. In some situations, like when using iOS, there is no custom EQ.
Yeah, I hear ya. EQ is not always possible and I wouldn't feel good at all if it was a necessity to get the sound I wanted. I was just pointing out that that's probably the difference you're hearing. The bass quantity on 770s can vary pretty substantially and the result is more drowned-out mids. My 770 Premium 600 ohm is very much a "bass heavy version" but I love it. However, I didn't like the recessed mids so I picked up a DT880 Pro and now I just EQ up the bass on the 880s if I want the 770 experience that I loved so much before. :)
I wonder why the 770 series has so much variation? I bought the 770 Premium 600-ohm as well about 2 years ago. Seemed anemic in the bass regions. I only had the DT990 Pros to compare to, but still. I was quite disappointed and sold them. Closed Beyers just don't seem to love me, at least not newer ones.

Unless the Go-Vibe doesn't have enough power to adequately drive your 250 ohm 990s, which I doubt, then you probably wouldn't notice a difference with another portable dac/amp. That's assuming that the Go-Vibe is competent, which it looks like it is. Do you do any stationary listening, like at a desk? If so, you might look into upgrading to a higher quality solid state or tube desktop amplifier and possibly a higher end desktop DAC.
Thanks, I'm using it stationary connected to my computer.
Will look into your suggestion, don't suppose you have any recommendations? 
Is there a way to reduce the high pitched s louds on the dt 880 ( 600) ohm?
In some games every time a chracter says "s" my head is going to explode if you know what i mean.
Yeah, I know what you mean. It's called sibilance, and the biggest downside of the DT 880 (and DT 770 as well).
There's nothing you can do about it as far as I know.
EQ 
Its kind of weird though.
In Final Fantasy 13-2 you can clearly hear sibilance when for example Noel talks. ( other chracters not as bad)
In the new released Metal Gear Rising, there is no real sibilance.
So i guess the makers of Final Fantasy kind of screwed up while recording?
Yeah they could just be sibilant recordings. If they are bright around 8kHz then the 880 certainly won't help since it does have a treble spike in that area but honestly my 880s are never sibilant in music or games. I've had a 770 that was though. The 880s tend to be more consistent so my guess would be that they just didn't record the audio for the game very well and its a bit sibilant to begin with, probably right around ~8k.
... I was tempted to get a 770 pro 600... but I went with a Fostex t50p Mad Dog[Alhpa Pad] instead...
still my dt 990 pro250s came in today ^^ so excited to try em :D
Before I got the HE-400s, the DT990 Pro was my favorite pair of headphones. Comfy and fun. Interested in how they compliment the Mad Dogs. If the Mad Dogs are just as fun but darker, I'm sure I'd love them.