hd25-1 impressions thread
Feb 23, 2023 at 4:22 AM Post #3,302 of 3,348
Picked up a pair of these recently for £25

Decided to give them a bit of a refresh with new cable (stock 1.5m, I am tempted to get the Oyaide one in the future though), new earpads and new headband pads.

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Looking great. I fancy a pair of the Irish production myself. There are minor quality issues with the Romanian ones.
 
Feb 23, 2023 at 4:51 AM Post #3,303 of 3,348
Looking great. I fancy a pair of the Irish production myself. There are minor quality issues with the Romanian ones.

I'm curious what the differences are, if any?

I've never owned the HD 25 before, but have heard them on a few occasions and when this pair came up for £25 it was too good a price to not get them.
 
Feb 23, 2023 at 6:04 AM Post #3,304 of 3,348
I'm curious what the differences are, if any?

Nobody knows. But, production was moved back to Ireland. Probably the Romanians will be collector's items.
 
Feb 23, 2023 at 6:05 AM Post #3,305 of 3,348
Feb 23, 2023 at 7:09 AM Post #3,306 of 3,348
Feb 23, 2023 at 7:13 AM Post #3,307 of 3,348
Feb 23, 2023 at 9:25 AM Post #3,309 of 3,348
I'm curious what the differences are, if any?

I've never owned the HD 25 before, but have heard them on a few occasions and when this pair came up for £25 it was too good a price to not get them.
From my limited experience the headband pads are poorly attached and the earpads start to delaminate in a few hours.
 
Feb 24, 2023 at 3:19 AM Post #3,310 of 3,348
My take on the HD25. 600 Ohm drivers, alu cups, aliexpress pads and Oyaide cables. Yes, they are very good. The Alu cups are works of art, this is not just some alu coating, those cups are machined from a block of solid aluminum. I am sure they were very expensive to make and I suspect they will never be made again. HD25.JPG

How are you finding the Oyaide cable, has it proven durable?
 
Feb 25, 2023 at 5:55 AM Post #3,312 of 3,348
Trying out a set of Zomo velour pads and so far they seem more comfortable than either of the OE pad types.
I think they may be a tad softer.

Having the foam disc attached to the ear pad may make fitting slightly easier and I think the aperture is fractionally larger while the 'foam' is also thinner.
 
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Feb 25, 2023 at 11:47 AM Post #3,313 of 3,348
Unfortunately, I couldn't find any decent DIY connectors so I went ahead and I ordered a cable directly from Sennheiser as my old cable started cutting on/out whenever I was adjusting the cups.

I never realized there was a steel version before reading this thread, someone said the steel version is high impedance, and it is true indeed. The odd part for me is the steel R/L has a different impedance by 0.5~1Ohm on the hot/cold due to the shorter cable for the R. I wonder if that could cause perceived imbalance for someone.




Aesthetics-wise, there are some differences:
For the newer copper cable, the pin is gold plated, and the jack has the Sennheiser logo and also a slightly different strain relief.
 
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Feb 25, 2023 at 2:20 PM Post #3,314 of 3,348
Unfortunately, I couldn't find any decent DIY connectors so I went ahead and I ordered a cable directly from Sennheiser as my old cable started cutting on/out whenever I was adjusting the cups.

I never realized there was a steel version before reading this thread, someone said the steel version is high impedance, and it is true indeed. The odd part for me is the steel R/L has a different impedance by 0.5~1Ohm on the hot/cold due to the shorter cable for the R. I wonder if that could cause perceived imbalance for someone.


Untitled.pngUntitled1.png

Aesthetics-wise, there are some differences:
For the newer copper cable, the pin is gold plated, and the jack has the Sennheiser logo and also a slightly different strain relief.
Yep, the resistance and capacitance are not only horrible, but they vary by channel :frowning2:
 

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