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A Review On: Grado HP-1000

Grado HP-1000

Rated # 28 in On-Ear
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Review Details:
Audio Quality
Purchased on:
Price paid: $1,800.00
Leonardo Drummond
Posted · Updated · 9057 Views · 6 Comments

Pros: Extreme accuracy, life-like with reference acoustic recordings

Cons: Very uncomfortable, will not suit any genre, rare and expensive



First of all, excuse my English if you find any mistakes – I'm not a native speaker.


I suppose these don’t need much introduction. They were the first Grados – all made by Joe Grado himself –, and are usually regarded as some of the best headphones ever made. Even by today’s standards they are a reference for neutrality.


Three variations were produced: HP1s (with polarity switch), HP2s (without polarity switch) and HP3s (without polarity switch and more tolerant driver matching). There were also at least two cables used during the HP1000s’ production: the Joseph Grado Signature Ultra-Wide Bandwith Reference Cable and the Grado Signature Laboratory Standard Audio Cable. From what I could gather, there doesn’t seem to be a consensus as to which is better or rarer. This review was done about an HP2 with the JGSUWBRC, but since then I replaced it with an HP1 with the GSLSAC (had both for a short period of time) and found that they sound exactly the same.




The HP1000s are pretty much equal to other Grados, but with a few distinguishing details that make them, in my opinion, one of the most beautiful headphones ever made. The whole structure is made out of metal, unlike all other the other Grados, which have plastic and/or wood. Joseph Grado wasn’t fooling around: this is a tough old bird.



The headband is made of genuine leather, but that doesn’t mean it’s comfortable: it definitely isn’t. The weight is quite substantial and the headband has got pretty much no padding, so it exerts considerable pressure on the top of my head. The clamping force adjustment is a joke: you do it by bending (!) the headband. Yes. On a 1.5K headphone. Only those who have done it will know how scary it is to do such a thing on such a rare and expensive headphone. The up side is that you can pretty much adjust it to your liking, unlike most other headphones I know. Vertical adjustment is made by the traditional Grado rods – but in here the whole thing is made entirely out of metal and there are little screws that secure the rods in place.


The original pads are similar to current Grados flat pads, but have a more consistent foam and a hole in the middle. I’ve tried all other pads and these (which are now sold through TTVJ) undoubtedly give me the best sound. The trade-off is that they’re incredibly uncomfortable. I really can’t wear these headphones for more than 30 minutes without some rest.




The HP1000s are usually regarded as being completely different from all other Grados. This was not my first impression, however. It is indeed more relaxed, less energetic and darker than the other Grados I know, but the crude and direct house sound is still intact. Tonal balance still seems to be centered on the mids, but the highs are much more relaxed than the brand’s recent offerings.

Regardless, I’ll go straight to the point: these are easily one of the most neutral headphones I’ve ever heard. Not long ago I reviewed the Orpheus, and my conclusion was that even though it might not be entirely neutral to the media, with its slight colorations it ends up being (accidentally or not) extremely natural and neutral do the original musical event. The Grados, to me, achieve a similar level of neutrality, but in a completely different way.




The Sennheisers seem to show you an embellished reality, putting you in the middle of a gorgeous and well decorated scenario, with beautiful musicians playing beautiful sounds around you. You appreciate every detail that is presented in great style. The HP1000s, on the other hand, show you a much cruder version of reality. It simply portrays an ugly reality, with tired and sweaty musicians playing on a dirty stage, after hours of recording.


Bass is very good. They’re not as strong as some other reviews made me believe, but they have good presence and excellent definition, impact and speed. However, extension is not that great – it’s good, but not spectacular. Integration of this region with the rest of the spectrum is seamless. In some cases I feel that they could be a little bit more present, but this is very recording-dependent. Reference recordings will find one of the best performances every, but artificial genres, such as electronic music, not so much. Some might find the bass to be a bit too dry.


The mids are the best – though the most complicated – aspect of the HP1000s. The thing is that to me they do sound forward, like other Grados, but the interesting thing is that this doesn’t seem to affect the way in which the tonal balance is translated to a truthful presentation. It’s as if we had mid-centered instruments (voices, guitars, pianos, etc.) more forward than the others in the Grado’s soundstage – something that usually happens in real performances, by the way. This is quite interesting, as something that initially sounds like an alteration of the tonal balance ends up sounding more adequate and real.




This characteristic is one of the biggest reasons for this raw character that the HP1000s possess. In some styles, this nude and crude reality is exactly what I want. There seems to be no artificialities, but at the same time the mids do sound forward, composing a personality that is borderline unpleasant – but it’s as if it was a reality that is borderline unpleasant, and this is the key here. It sounds like reality, so for a headphone, it’s almost pure perfection. That’s the HP1000s’ paradox. In acoustic reference recordings it sounds, well, like the reference, and in some cases, particularly with rock music, guitars just seem to attack your ears in a life-like way. It’s bloody fantastic.


The highs, just like the mids, are something special. I’m fairly sensitive to how treble should sound – I had a band for a while and I know how cymbals should sound, and the truth is that like 95% of the high-end headphones I know (that includes HD800s, JH13 Pros, SR-007, T1, HE500 and many others) just get them wrong. There seems to be some bright spots that completely distorts cymbals. I should say, though, that this is also highly dependent on the recording as well. There seems to be some peaks in the treble that somehow are in the wrong place, and the results frequently are cymbals that have no body. They simply don’t sound like the real deal.


I know of a few headphones that do get them right – HD600, HE90 and K1000 immediately spring to mind –, and to me, the HP1000s outclass them. They may be the most realistic treble I’ve ever heard on a headphone before. They are slightly laid back, especially compared to the forward mids, but in terms of timbre, they are simply spot-on. Cymbals have body, attack, presence and an extremely realistic decay. Some of my reference recordings for treble are Mogwai’s The Hawk is Howling and Hard Rock Will Never Die, But You Will and Esperanza Spalding’s Esperanza. With the Grados, I found what are the most realistic cymbals I’ve ever heard on headphones to date.




In terms of transparency the HP1000s are good but already show their age. It’s not nearly as transparent as something like an HD800, even though, to me, they do sound more realistic in its overall signature. The same can be said about speed: the Grados are somewhat quick for a dynamic of this age, but comparing them to may modern offerings will show you that they are indeed 20+ year old headphones.


Soundstage is considerably more expansive than the brand’s usual, but it’s still small and can’t be compared to something like an AKG K702 or an HD800. It resembles the LCD2 in that regard, though a bit better since the Audez’es have a fuller sound that seems to diminish their spacial capabilities.




The HP1000s are truly incredible headphones. In my opinion, if you feed it the right recordings, it simply sounds like the real thing.


It’s not as neutral as an HD800, HE90 or JH13 Pro... it’s quite hard to explain. What happens is that it sounds raw. That’s the word that better describes it. That’s why it doesn’t work with every genre, and I why wouldn’t want to live with them as my only headphones – its nude and crude reality is not always welcome.




An HD800, for example, has got reasonably present bass, sweet and cohesive mids but treble that’s slightly hot and with a detail retrieval that simply surpasses the limits of what would be natural. A JH13 Pro is like an extremely capable studio monitor, full of energy but with slightly accentuated bass and treble – which sound a bit wrong in terms of timbre.


The Orpheus is pure perfection, but has it’s euphonic signature and diffuse soundstage, also with a relatively unnatural detail retrieval in many cases. Like I said before, it seems to embellish the music. Don’t get me wrong – they’re still by far the best headphones I’ve ever heard, but in absolute terms, the HP1000s are just as neutral, though in a different way. An HE90 lets you hear every nuances of a female voice, for example: the breathing, the opening lips, as if the singer was there whispering to you. The Grados just leave them on the stage, doing whatever it is they want to do, their way, not looking to please you.


It’s really quite different. It sounds acoustic, analog – but not the warm-vinyl-analog, I mean analog in the sense that it sounds like a passive tool that conveys all the sonic and physic nature of instruments, with all their perfections and imperfections.


With the right recordings, they don’t sound like a studio recording. They just sound like the real deal.


Associated Equipment: HeadAmp GS-X, Meier Audio Eartube, Melos SHA-1, Woo Audio WA3, Electrocompaniet ECD-1, Abrahamsen V6.0, Cambridge Audio DacMagic.


You really have two pairs? Where's the love? Sharing is caring! ;)
Hahaha I sold the HP2s a while ago :)
You are spot-on Leonardo. This is the best review I have read about this headphone!
Nik call the HP 1000 a musical instrument, the midrange has been described as analog more than once, and someone literally made a thread about it, calling it “velocity”. I believe it is entirely due to a fundamental technological difference it has that all other dynamic transducers don't.
Precisely, something Joseph Grado referred to as a rear pressure diffuser/equalizer (I don't remember the exact term) in a clipping of, again I don't remember which, Audio Magazine in the early nineties. The fact: http://cdn.head-fi.org/a/ae/500x1000px-LL-ae32c08a_900x900px-LL-89ed175b_driver1.jpeg
My crude interpretation: http://i881.photobucket.com/albums/ac14/devouringone3/HP1000-Copy_zps77445b8f.png
And I equate the mellowness of the cymbals to the star patterned vacuum formed creases of the dome (responsible for the high frequencies on headphone driver diaphragms), which are also unique to this driver.
Leonardo if you like your HP 1000 you owe it to yourself to try my mod (I won't listen to my HP 1000 any other way, personally) (it's the second half of my post; bear in mind that English isn't my native language either ;): http://www.head-fi.org/t/576717/grado-modders-go-magnum/2640#post_9507046
If you already own HD414 pads you know that, stock, they sound neutral, dynamically equal (sound the same at every volume level), detailed/transparent, and bass-less. My mod will increase the bass where it's lacking in quantity and hence improve its extension. You can expect to have easily more than twice the overall bass amount of non-taped TTVJ flat pads; my gross, honest estimation.
Bass doesn't flow through open space (foam is near equivalent to open space) as easily as highs, that's why you need 3M Scotch tape (which properties seem to do bass conduction bliss to my ears) to serve as the walls of an ideally airtight conduit. The pads are a crucial, deeply influencing element to the sound of every Grado headphone.
Also, you're so right about how scary it is to try prying open such a thick spring steel headband on such a rare, expensive and old headphone!
Thank you very much for your comment, devouringone. I've learned a lot about the HP1000s with your posts – it's clear that you are one of the Grado's conoisseur! So it makes me really happy that you liked my review!
I just read that link about your mod and it seems indeed very interesting! I used to have the yellow pads but now I don't (they were sold along with my former HP2s), although I became quite interested in your proposition and would be happy to buy a pair to try it out.
I tried every type of Grado pad and the TTVJ gave me the best sound, along with the yellow pads. The HP1000s were definitely made to be used with flats indeed.
Once again, thank you for your comment! It's really great to have some one this knowledgeable about these Grados around here. They truly deserve it!
TTVJ flats were also my favorite pads, behind the HD414's and the bowls in that order. Then Joseph Grado improved flat pads became my costly favorites, by a fair margin, because after that the TTVJ sounded pale (echo-y / unfocused / muffled) in comparison.
For all those pads I ended up preferring the sound of 3M Scotch tape around them. Except for the HD414's which don't behave as most Grado pads do. Tape modifying them the traditional way didn't change anything to their sound signature, so I invented the “Sunflower” Grado mod that I have yet to make official in a dedicated thread. I don't recommend applying the mod to any other pad than the HD414's.
My mod improves in the same direction Joseph Grado did with his improved flat pads. I have no hesitation recommending people to buy and modify those yellow sponges, because I think there will be no going back for anyone trying it.
The forwardness of the midrange has been thoroughly discussed (called “glare” by LCfiner and “shoutiness” by Purrin) and though I'm equalizing out presently, I will be trying HP 1000 drivers in wooden cups of various geometries (and in my full Symphones Magnum too) to rule out if whether the effect is coming from the drivers alone or the cups. Some have commented about possible benefits of suppressing that vocal highlighting the HP 1000 does. http://www.head-fi.org/t/596028/joe-grado-hp1000-modifications
Interesting, devouringone!
I'm very interesting in trying the mod. Not sure I want to get rid of the forwardness of the midrange though :P
It's one of the things that make them a very special headphone!
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