Superlux Express Train
Sep 1, 2019 at 9:09 AM Post #1,336 of 1,352
with audeze vegan pads

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Sep 1, 2019 at 9:58 AM Post #1,337 of 1,352
Hello! Thanks a lot for your input. I own a takstar pro 82 and a superlux hd681. I am looking to replace my takstar for outside listening since I couldn't find this amazing sound from the hd681 which honestly blows my mind everytime at how good it sounds.
I've been considering the 662 Evo and now the 688, both of them won't be modded.
Do you know if the hd688 (or any of you) sounds similar to hd681? I don't need it to be better, similar is enough.

Thanks in advance.
Probably stock HD688 is close enough or HD662F. I recommend China pads 105mm. HD662F is probably the most neutral, with great dynamics and with quite deep bass headphone from the Superlux after some tweaking. And the mod is very easy to do :)

Superlux HD662F.png '

This is the mod I did: A kinesio tape front of the driver (aka a fabric tape)
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an optional: open the holes fully and cover the holes with same tape
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Feb 5, 2020 at 1:04 PM Post #1,343 of 1,352
Thanks for chiming in. Do you have any experience with evo compared to normal 681?

I don't have the Evo, sorry :frowning2: But I think I've read some reports saying that they do sound better than the 681. In what way, I'm not sure. However, they also reported that the build quality of the Evo is quite suspect. The cable gets broken where it meets the cans after a few months of (presumably everyday) use.
 
Feb 5, 2020 at 3:40 PM Post #1,344 of 1,352
I don't have the Evo, sorry :frowning2: But I think I've read some reports saying that they do sound better than the 681. In what way, I'm not sure. However, they also reported that the build quality of the Evo is quite suspect. The cable gets broken where it meets the cans after a few months of (presumably everyday) use.

Maybe you had the chance to listen to hd330 model? Are they an upgrade from the 668b's?
 
Jul 5, 2021 at 1:02 AM Post #1,346 of 1,352
Superlux HD681 (older version, pre-2018?) with Superlux HD662-EVO earpads and 6 plies of paper towel. Measured using MiniDSP EARS with HEQ compensation. Imo, has a balanced sound overall with very good bass extension, warm mids, good treble extension (doesn’t have the steeliness/tizziness sound of the stock pads, specifically in instruments such as cymbals).

My stock Focal Clear, stock Sennheiser HD800 with worn earpads, and stock Superlux HD681 measurements overlaid alongside modded Superlux HD681.

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Jul 5, 2021 at 5:00 AM Post #1,347 of 1,352
I'm not a fan of toilet paper but it's a dirty and easy trick. I think a kinesio tape is more suited. You can also try to block with a cotton the center of the driver. It also removes the treble peakiness. But also increasing some shallow falls. Also if you open the vents at the front you get more bass.


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Jul 5, 2021 at 12:40 PM Post #1,348 of 1,352
Superlux HD681 with Superlux HD662-EVO earpads and 6 plies of paper towel. Measured using MiniDSP EARS with HEQ compensation. Imo, has a balanced sound overall with very good bass extension, warm mids, good treble extension (doesn’t have the steeliness/tizziness sound of the stock pads, specifically in instruments such as cymbals).

My stock Focal Clear, stock Sennheiser HD800 with worn earpads, and stock Superlux HD681 measurements overlaid alongside modded Superlux HD681.

7CE05F4B-86C2-410D-B79D-97E0AD2DD63C.png
95665805-E1EC-4A32-9360-A9715FB788FA.png39EA9282-265F-43CD-9763-7D1E62E9DF2F.jpeg
May I know where did you put the paper towel? Also, if I'm not mistaken this is the older version of the HD681, right?
 
Jul 5, 2021 at 6:29 PM Post #1,349 of 1,352
May I know where did you put the paper towel? Also, if I'm not mistaken this is the older version of the HD681, right?
Yes, this is the older version. I placed the paper towel discs (in the shape of stock circular foam) in front of the driver, than placed/stacked the included stock foam on top. I will post photos later.
 
Jul 5, 2021 at 7:47 PM Post #1,350 of 1,352
Yes, this is the older version. I placed the paper towel discs (in the shape of stock circular foam) in front of the driver, than placed/stacked the included stock foam on top. I will post photos later.
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