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Post by superluc on Jan 1, 2018 9:59:55 GMT
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solderdude
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Post by solderdude on Jan 1, 2018 10:19:22 GMT
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Post by psych0 on Jan 1, 2018 15:06:51 GMT
The HD688 works great with stock Superlux velourpads and when ordering the HD688 would recommend to order those pads along with it. These are very cheap from Thomann. Will get the Superlux velour pads for the HD688 initially, but would pads like the round HM5 fit/work well? Also, are there any decent (less microphonic) extension cables from Thomann? (except pro snake) I can only find this Beyerdynamic one which seems a bit expensive. I can get the CORDIAL CFS 3 WY locally which i guess should be good.
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Post by retroe83 on Jun 15, 2018 13:54:04 GMT
Hi!
I’m newly registered to the forum but have frequented the threads in the past, and have based most of my headphone purchases on information from the forums and associated website. I’m really thankful that these sites exist!
Anyway, I have a question about the HD687. Does anyone know if the production HD687 measures similarly to the prototype HD687, and if it does would it be an upgrade over a fully modded HD662-EVO (of which I have 5 of)? Also would the soundstage be wider than the 662-EVO? Thanks.
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solderdude
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Post by solderdude on Jun 15, 2018 16:05:51 GMT
I only received HD687 and HD688 prototypes. These were excellent and easy to modify.
Turned out that the production versions had different drivers. I bought a HD688 out of curiosity why people reported different things than I. Indeed it measured not nearly as well and also did not sound nearly as good than the proto. That HD688 Proto is still my favorite closed headphone. The HD800 and (modified) HD58X are my go to open headphones.
I never bought the production HD687 though so cannot comment on the sound.
Soundstage (for as far as that exists) will be about the same as HD662EVO. Don't know what mods the HD687 would need either but won't be the same as that of the prototype.
The proto HD688 was 'wider' in soundstage than the HD662-EVO but the driver was better. Not as wide as HD800.. but not many headphones do have such pinpoint separation.
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Post by retroe83 on Jun 15, 2018 17:22:56 GMT
Thanks! I didn’t want to jump the boat after reading about the HD688. I can get either that or the HD687 in Canada for $75 CAD, but the HD662-EVO for $49 when it goes on sale.
For open headphones, I do have the original HD580 (which I keep for reference), AKG K500 & K501. The latter two have a wide soundstage but aren’t exactly portable and quite fatiguing to my ears but keep because of their unique signature. I felt adding 2 ply toilet paper took away from the soundstage and treble quality of the K500.
For closed headphones, I have the Beyerdynamic DT250 80 Ohm, Superlux HD662-EVO & HD669. I daily the DT250 for work. Subjectively, the HD669 seems to have a wider soundstage than the HD662-EVO, but lacks the amazing sub bass and mids & upper treble quality of the latter.
I have briefly tried the HD800 and Beyerdynamic T1 and felt both were quite bright. I have the opportunity to get an HD700 for $350 and was thinking about applying the Modhouse mod to tame the treble peak(s) but those FR graphs on their site suggest not enough SPL is shaved off.
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solderdude
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Post by solderdude on Jun 15, 2018 21:34:40 GMT
All I can say is I don't get the love some people give to the HD700. It just sounded way 'off' to me. Admittedly it was at the same time I was listening/measuring Susvara, HE1000, LCD3 and other flagships.
Both HD800 and T1 were not listenable for me without EQ.
Use the HD800 with EQ and think that sounded better than Utopia (4k$) next to it. Without EQ the Utopia and even Clear are 'more pleasant' to my ears. Well, aside from the 'sharpish' character of the Utopia.
The DT250 is linear but for me too coarse in the treble. Were that treble more refined and the channel imbalance addressed I would have kept a DT250.
Owned the K501 ... shortly. The lack of body and limited power handling (starts to distort pretty soon) and limited types of music were downsides.
No idea about the production HD687, too expensive to buy just for measurements unless it could easily be sold... which I don't think it will.
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Post by retroe83 on Jun 16, 2018 22:44:17 GMT
Thanks again! I appreciate the thorough feedback. I totally understand about not purchasing the HD688 and not being able to resell it. I’ve never been able to sell my HD668B. If I have to sell it for $20 or less I might as well just keep it. I’ve listened to a Utopia and thought that it was impressive but don’t think it’s worth the asking price $6000 CAD! I will probably go for an HD800 in the long run. I guess the HD700 isn’t even worth the price of a used a HD650 If comfort is the only thing really going for it I’ll pass. I find myself using the HD662-EVO most, but relegated it to home use because after using it as a work, gym and commute headphone, it’s gotten quite scratched up. I ended up buying 4 more because VFM, and was worried about the silent revisions that Superlux might do on the driver in the future. Knock on wood, the 5 examples I have had the felt in front of the drivers, and sounded similar to each other.
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Post by miiksu on Jun 20, 2018 7:30:09 GMT
All I can say is I don't get the love some people give to the HD700. It just sounded way 'off' to me. Admittedly it was at the same time I was listening/measuring Susvara, HE1000, LCD3 and other flagships. Both HD800 and T1 were not listenable for me without EQ. Use the HD800 with EQ and think that sounded better than Utopia (4k$) next to it. Without EQ the Utopia and even Clear are 'more pleasant' to my ears. Well, aside from the 'sharpish' character of the Utopia. The DT250 is linear but for me too coarse in the treble. Were that treble more refined and the channel imbalance addressed I would have kept a DT250. Owned the K501 ... shortly. The lack of body and limited power handling (starts to distort pretty soon) and limited types of music were downsides. No idea about the production HD687, too expensive to buy just for measurements unless it could easily be sold... which I don't think it will. They are now 39€ on thomann. I can buy those in Finland only 50€ (shipping costs included). I don't have measurement equipment but I love my modded HD688. Maybe I should just blindly buy those and give some small review of those.
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solderdude
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Post by solderdude on Jun 20, 2018 8:07:41 GMT
I could also buy it and measure it, maybe even modify it and then forward/sell it to you if you want. No extra charge for shipping and mods... !
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Post by miiksu on Jun 24, 2018 18:26:52 GMT
I could also buy it and measure it, maybe even modify it and then forward/sell it to you if you want. No extra charge for shipping and mods... ! Deal!
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solderdude
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Post by solderdude on Jun 26, 2018 17:06:24 GMT
The HD687 sounds pretty good out of the box already. Could easily live with it in stock condition. Ordered the similar priced AKG K92 which looks fancy (black and matte gold) and read glowing reviews about it being the best low budget headphone.
Sound like crap. Dark and upper mids recessed, not dynamic at all, compressed sounding and not so nice treble up top. The HD687 is a MUCH MUCH better buy for sure.
Will measure both and mod both (if needed at all for the HD687)
Busy with other things as well so may take a few days.
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Post by miiksu on Jun 26, 2018 18:42:32 GMT
Seems good, that HD687. I wonder if they did that on purpose to promote higher cost headphones on AKG.
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Post by retroe83 on Jun 27, 2018 15:29:41 GMT
That’s good to hear! From your initial impressions, did that sub-bass sound rolled off? Maybe a bit too early to ask. Hopefully extensive mods aren’t necessary
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Post by miiksu on Jun 27, 2018 16:06:11 GMT
Maybe filter mod is done but I don't mind if I don't have to do the EQ work It's easy to solder some components. Also I would not mind if Solderdude would give some EQ settings to smoother frequency response. That would be the easiest and fastest way to fix frequency response and for the tonal balance but not the quality of itself. If that makes any sense.
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