Massdrop x Koss ESP/95X Electrostatic System
Massdrop x Koss ESP/95X Electrostatic System
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Product Description
A revival of the standard-setting ESP/950 released by Koss in 1990, these headphones bring electrostatic quality into a whole new price bracket. Initially designed for live recording, the ESP/950 came with a large carrying case and a battery pack to power the required energizer: a special amplifier for electrostatic drivers Read More

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Acidleak
0
Mar 31, 2020
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heinami
3
Mar 26, 2020
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Have had my 95x since the end of December (so about 3 months) and have thoroughly enjoyed them. Unfortunately, I sat down today while working from home (thanks coronavirus!) and flipped the switch to power the unit on. After a couple of minutes, I got up and returned to see the LED was off. I tried flipping the switch some more - nothing. Anyone have any issues with the unit seemingly dying mid use? And if so, any tips to get it going that don't require replacing the wall wart or entire box?
Mar 26, 2020
heinami
3
Mar 30, 2020
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Is there a fuse inside the energizer to check? I am unsure what fuse you're referring to.
Mar 30, 2020
Jimmyblues
18
Mar 30, 2020
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I'm not sure. However, there might be. If there is a fuse and it blew, replacing it should have the energizer working again. I'd call Koss directly and ask them since they manufactured the energizer. Good luck!
(Edited)
Mar 30, 2020
NeoTheLizard
83
Mar 25, 2020
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I've read from some comments and discussions further down that electrostats benefit greatly from being "charged" (that is, connected to the energizer while it's turned on) for longer periods of time. I tried leaving it on overnight while the headphones were packed in a sports bag on my desk. Listening to them today seems to confirm that they do change their sound over time, kinda like a tube amp, although the time period needed for them to start to shine seems to be much more extreme (prob about half a day at least, as opposed to a couple of hours). The first couple of hours after powering on the energizer, they do seem to sound a great deal less exciting and somewhat harsh. I couldn't any official documentations of these things anywhere, though. These are my first set of electrostatic headphones. Anyone more experienced with these kind of drivers have any other tips for maintenance, as well as getting the most out of them? Absolutely love them so far!
Mar 25, 2020
Asatiir
13
Mar 24, 2020
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Would it be safe to plug this to a tube amp, or should I stick to using my HD 6xx for that?
Mar 24, 2020
Marlowe
133
Mar 24, 2020
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I assume you mean connecting a tube amp to the energizer's inputs, and I guess the answer would be yes, if the tube amp has a preamp function. Actually, I'd like to know if anyone has done this since I am still contemplating buying this and have a tube amp (Schiit Valhalla 2) that works as a preamp. Does this warm up the bass of the 95X? (Tube dependent, of course.) An added benefit would be adjusting the volume from the preamp and avoid playing with the annoying split volume control.
(Edited)
Mar 24, 2020
Fmoreno
0
Mar 23, 2020
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I have these connected from my PC playing tidal master's to my Motu m4 that has ESS Sabre32 Ultra DAC to my koss esp 95x..... Not sure if it's a terrible setup but it doesn't sound as amazing as I thought it would. My Sennheiser hd598 sound as good. My Philips fidelios sound as good. Am i missing something.
Mar 23, 2020
Fmoreno
0
Mar 23, 2020
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I burned them in with pink noise for 10 hours. It's a bit disappointing.
Mar 23, 2020
adeadcrab
183
Mar 24, 2020
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Mar 24, 2020
NeoTheLizard
83
Mar 20, 2020
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Received them a couple of days ago now, don't quite feel ready to write a full on review yet, but... Damn. These really, really do something. Yesterday they just began to open up immensely. Pretty warm sounding to my ears, really smooth, although naturally depends on which points of comparison you relate to. My Sennheiser HD58x's sounded way too warm and bassy when I put them on for a moment after getting used to these. Upon initial listening, what struck me is that these sound very little like anything I've heard before, though notably I've never heard planar magnetics, electrostats or even particularly high end dynamic headphones before. One of my friends, who grew up listening to a lot of different audio systems, both speakers and headphones (none of which were planars or electrostats though), also noted that some things about the sound were difficult to describe accurately. A weirdly fun thing about them is that if you put your hand even remotely close to the back of the ear cups, around 15-20cm or closer, you can hear the sound becoming distorted by the obstacle. Even though they don't sound insanely wide, they're definitely extremely open, even in comparison to my Sennheisers. They feel like a very big step up from my Sennheisers though, honestly about the same leap in overall quality and enjoyability as I recall moving from my old HyperX cloud 2 headset to the previously mentioned. It feels like that big of a difference to me. Although I'm not usually comfortable spending big bucks like this on stuff, listening to these, I just can't help but feel that they're totally worth it. The sound is just so beautiful, and clear. As if the HD58x's weren't really good at imaging and separation already, these put them completely to shame. Plus, there's that nice warranty to help my heart feel a bit more at ease with the potential problems I might encounter down the line. I had one of the tell-tale humming sounds in one of the ear cups when using them through my trusty Grace SDAC on two different laptops, but for some reason that doesn't occur at all when said DAC is plugged into my desktop PC. Thankfully, that one is my main system anyways. So far, they are dead silent when nothing is playing, as they should be. I've learned from all the different comments that electrostats are sensitive b0is, so I'm trying to take good care of mine to protect them from dust and other possible harmful factors. I also honestly don't understand the people complaining about the build quality. Yeah, plastic, sure, but not brittle or poorly assembled plastic. They feel perfectly solid to me. The split volume knob is weird, but easily worked around.
Mar 20, 2020
PanY
16
Mar 19, 2020
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Has anyone compared it to the ESP950s? Thanks!
Mar 19, 2020
Blatantone
1
Mar 17, 2020
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How is the MASSDROP X KOSS ESP/95X ELECTROSTATIC SYSTEM connected to a receiver amplifier? The pre-amp? I'm not what you consider an audiophile, yet.
Mar 17, 2020
Blze001
14
Mar 18, 2020
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Standard RCA plugs. You can use the line-out from the receiver, or pre-amp out if you don't want to fiddle with the dual volume knob on the energizer and just control volume via receiver.
(Edited)
Mar 18, 2020
andrewebay1
159
Mar 1, 2020
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Can someone explain the battery packs these use to ship with? I would like build one using my own materials or if not get one from someone who doesn't use theirs?
Mar 1, 2020
Boss302
51
Feb 28, 2020
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back down to sale price! nice
Feb 28, 2020
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