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Review: CharterOak Acoustics SP-1 (GMP 450 Pro) - Page 2

post #16 of 356
Quote:
Originally Posted by burgunder View Post
OK thx I will look for some other cans, but please report if the beyer pads will improve the isolation, on my list is ATM Shure 840 and Kenwood K1000 I don't think I will buy the K271 as I allready have the K400s and I suspect they have a similar soundsignature.
The earpads are not the isolation problem with the GMP250/ 450, but the housing. The Beyer pads won't help in this regard.

The Kenwood K1000 would be a fine choice, but are IMO not that much better than the K271 when it comes to sound quality. The K1000 have way more bass though. K271 isolates better.

The K271 and the K400 have not the same soundsignature, especially not the early production K400. Those are far more lively, with a much better overall sound and soundstage than the K271 have.
The Kenwood and the K271 share more similarities in sound than the K271 and the K400.
post #17 of 356
Thread Starter 
The GMP 450s and CharterOaks run about $350 USD. I got mine for just over that in CND from Studio Economik, which was a very good retail experience.

Looking at Amazon, that seems about consistent with their American pricing.
post #18 of 356
^ Thanks!
post #19 of 356

I had K271s, and I got my GMP450 recently.

I audited both before my decision of buying the GMP450.

Here's my finding.

For isolation, go get K271s since GMP450 has almost no isolation.

For sound, GMP450 wins with a far lead (I listen mostly classical, for your info).

GMP450 sounds very like an open-end headphones, and everything is well controlled.

It has a realistic sound stage and image, and its balance on bass and treble are ideal.

K271s does the treble of piano very smoothly, but it does in a way putting extra distance on that but not for the bass part of piano sound.

GMP450's piano treble can be a little bit harsh yet it is reasonable since it also delivers the bass part with clear thump.

GMP450's sound is direct, controlled, and slightly engaged.

The only complaint I have is that its treble can be fatiguing after like 1hr of continuous listening.

This is not surprising though, it is a pair closed-back phone after all.


Edited by stokitw - 6/22/10 at 6:42am
post #20 of 356

I agree, the one I got from Taiwan only comes with one year warranty.

I wish I can pay some more for a life time warranty though.

In addition, the package of the re-lable one OP got looks gorgeous:P
 

Quote:
Originally Posted by nhancakes View Post

nice review, looks like these cans come with a lifetime warranty as well which is a major plus
post #21 of 356

I would put GMP450 up against Senn HD650, AKG K702, Beyerdynamic DT990.

The very simple fact is, GMP450 is the only phone I own which won't let me grab GS-1000 ASAP.

It won't let me have the feeling : what the hell I'm doing? why do I waste time on this phone while GS-1000 is around. (That's the reason I keep the DT990 at the office otherwise DT990 won't get any head time at home with GS-1000's presence)

 

Yes, GMP450 sounds that good.

 

It has a very realistic sound stage (smaller than GS-1000 or K702 or DT990 but no big deal), yet a little bit aggressiveness like Grado which gives you intimacy.

The intimacy is not too much as are lower-end Grados. 

The balance between spacing and intimacy is outstanding.

 

When put it on my m902, GMP450 really gives you a listening experience both realistic and engaging close to GS-1000's level.

( from my audition on HD650, K702, DT990, they all puts you a little bit too far from the orchestra by emphasizing the reverberation a little too much )

The closed back design gives you some sort of isolation (not good due to its loose and comfortable fit), which fits me well during the summer when AC or fan is on.

The only thing it falls short is the listening time.  Even though the sound qualities are close, I can stay with GS-1000 for hours without rest.  I have to rest after a full CD (70+ mins) with GMP450.

 

I also have some auditions for other German Maestro's model.

I like the 8.35S's aggressive sound, but the clamping is too much for me.

GMP400 loss the clarity of bass due to the velour pads.

The audition on GMP435 is rather brief, it's sound signature is similar to GMP450.

I would recommend an audition between GMP435 and GMP450 for anyone who interested in German Maestro's phones.
 

Quote:
Originally Posted by stokitw View Post

I had K271s, and I got my GMP450 recently.

I audited both before my decision of buying the GMP450.

Here's my finding.

For isolation, go get K271s since GMP450 has almost no isolation.

For sound, GMP450 wins with a far lead (I listen mostly classical, for your info).

GMP450 sounds very like an open-end headphones, and everything is well controlled.

It has a realistic sound stage and image, and its balance on bass and treble are ideal.

K271s does the treble of piano very smoothly, but it does in a way putting extra distance on that but not for the bass part of piano sound.

GMP450's piano treble can be a little bit harsh yet it is reasonable since it also delivers the bass part with clear thump.

GMP450's sound is direct, controlled, and slightly engaged.

The only complaint I have is that its treble can be fatiguing after like 1hr of continuous listening.

This is not surprising though, it is a pair closed-back phone after all.

post #22 of 356
Quote:
Originally Posted by stokitw View Post
I would recommend an audition between GMP435 and GMP450 for anyone who interested in German Maestro's phones.

 


 



Let me add the GMP 8.300 D to the list. It has the isolation that the GMP250 and 450 are lacking, and a very, very good sound.

The only downside of them is a small soundstage, but that's about it.

post #23 of 356
Thread Starter 

It's nice to know that I'm not crazy.  I still don't know why this brand doesn't get more attention around here.  Thanks, Stokitw

post #24 of 356

I think GMP is one of the few headphones that really almost only targeted at professionals.  From it's sound qualities to it's durability, it just screams I am the headphone for a busy studio where mishaps may happen, and where reliability is crucial.

 

GMP doesn't seem to have an entry level consumer headphone to pull people in to see the rest of their line up.  Like for Audio Technica, they have their fashionable AD700 that let's you hear and want more.  M50 another choice.  Sennheiser has their HD485/HD555 series.  These headphones you can find in electronic's stores or instrument/gear stores like Guitar Center etc.

 

Some like AKG just have history, and is just iconic.  The 240 studio can be seen worldwide in magazines, pictures, news rooms of people using them.

 

Unless you are a headphone fan, or working in the studio how else would you know about GMP?  The other headphones you don't need to visit any headphone site/forum or be working in a studio or music industry to know and hear those headphones.


Edited by Ruffle - 7/1/10 at 10:48am
post #25 of 356

Oh man, I see you have these up on the FS forum and I'm so incredibly tempted because it sounds like it's the sound signature I'm looking for, but I just can't justify buying any (more) phones right now. I would offer my Phiaton MS 400 as trade, but alas those are still rather new to me and I don't think I could bear to part with them just yet (though I do recommend them if you're looking for something with good base yet retains a focus on vocals).

post #26 of 356
Thread Starter 

I think I'm going to miss them once they're gone (if anyone actually buys them).  I just ended up with a couple with a sound signature that works better for me, so they don't get as much head time as they deserve anymore.  

 

I think they are the only pair on Head-fi, though, which is kind of cool.  I'm not in any real rush to sell them, and I'm sure the time will come when the right person comes along and will get real pleasure from them.

post #27 of 356

Hello fellow Headfiers!

 

I'm new here but have been hanging around looking for my first full sized headphone to pair with my Yulong D100.

I apologise for reviving this thread but it seemed to be the more apropriate place to post my questions.

 

After a long and pacient search and reading on Head-fi and other sites, I think that my final decision on my first full sized headphone will be one of these three German Maestro sets:

 

GMP 400

GMP 435s

GMP 450 Pro

 

Unless anyone changes my mind, it will probably be the 450 Pro. I have some critical questions though...

 

1. Is it possible to replace earpads on the 450 Pro?

2. I still don't get one thing... is the GMP 450 Pro bass light or not? (I'm no basshead I want balanced sound)

 

To Joelpearce:

How would you compare the overal sound (particularly interested on midrange description) of these three headphones?

 

GMP 450 Pro (I know you no longer own the Charteroaks but you seem to be the only one who has owned these three cans to compare)

Beyerdynamic DT 48 ( Possibly interested in these but can't find it cheap)

Fostex T50RP

 

By the way, more comparisons or impressions are always welcomed.

 

Any aditional information will be much appreciated, thank you!


Edited by kkl10 - 12/26/10 at 9:59am
post #28 of 356
Thread Starter 
Quote:
Originally Posted by kkl10 View Post

Hello fellow Headfiers!

 

I'm new here but have been hanging around looking for my first full sized headphone to pair with my Yulong D100.

I apologise for reviving this thread but it seemed to be the more apropriate place to post my questions.

 

After a long and pacient search and reading on Head-fi and other sites, I think that my final decision on my first full sized headphone will be one of these three German Maestro sets:

 

GMP 400

GMP 435s

GMP 450 Pro

 

Unless anyone changes my mind, it will probably be the 450 Pro. I have some critical questions though...

 

1. Is it possible to replace earpads on the 450 Pro?

2. I still don't get one thing... is the GMP 450 Pro bass light or not? (I'm no basshead I want balanced sound)

 

To Joelpearce:

How would you compare the overal sound (particularly interested on midrange description) of these three headphones?

 

GMP 450 Pro (I know you no longer own the Charteroaks but you seem to be the only one who has owned these three cans to compare)

Beyerdynamic DT 48 ( Possibly interested in these but can't find it cheap)

Fostex T50RP

 

By the way, more comparisons or impressions are always welcomed.

 

Any aditional information will be much appreciated, thank you!


It is possible to replace the pads on all of these headphones--the pads are the same shape as Beyerdynamic 770/880/990 pads, though pad rolling usually results in a huge lack of bass.

 

They are, indeed, bass light.  The bass that's there sounded good, but there just wasn't enough for me.  It is probably good for music mixing and listening to, say, acoustic music and jazz.  That said, I can't recommend them for rock, pop, orchestral music or electronica.  The bass simply doesn't have much punch.  Of course, none of the other ones you listed really do either.

 

To compare those three, the GMP 450 Pro is highly musical, easy to listen to, and has a nice wide airy soundstage.  They are midcentric, but have nice clear highs as well.  They are also extremely comfortable, though they don't feel especially durable.

 

The DT48 comes from a completely different universe.  They are extremely precise audio tools, and the midrange is truly unparalleled.  With them, you hear absolutely everything that's in the recording, whether you want to hear it or not.  They are also fairly light on bass, and also roll off a bit at the top end.  They are significantly heavier and less comfortable, though they could probably survive anything you would put them through.

 

The Fostex T50RP is an ortho, so you're looking at a totally different technology.  Stock, they are much darker than the other two--they are detailed, but they have a warmth that the others don't have.  They have a well-balanced sound spectrum as well, though I found stock they sounded just a little bit "off"--they didn't play as coherently as the other two.  With some modding, they can be turned into almost anything you could want, but if you're not after bass, other orthos might be a better choice.

 

I hope that helps.

post #29 of 356
Quote:
Originally Posted by joelpearce View Post



Quote:
Originally Posted by kkl10 View Post

Hello fellow Headfiers!

 

I'm new here but have been hanging around looking for my first full sized headphone to pair with my Yulong D100.

I apologise for reviving this thread but it seemed to be the more apropriate place to post my questions.

 

After a long and pacient search and reading on Head-fi and other sites, I think that my final decision on my first full sized headphone will be one of these three German Maestro sets:

 

GMP 400

GMP 435s

GMP 450 Pro

 

Unless anyone changes my mind, it will probably be the 450 Pro. I have some critical questions though...

 

1. Is it possible to replace earpads on the 450 Pro?

2. I still don't get one thing... is the GMP 450 Pro bass light or not? (I'm no basshead I want balanced sound)

 

To Joelpearce:

How would you compare the overal sound (particularly interested on midrange description) of these three headphones?

 

GMP 450 Pro (I know you no longer own the Charteroaks but you seem to be the only one who has owned these three cans to compare)

Beyerdynamic DT 48 ( Possibly interested in these but can't find it cheap)

Fostex T50RP

 

By the way, more comparisons or impressions are always welcomed.

 

Any aditional information will be much appreciated, thank you!


It is possible to replace the pads on all of these headphones--the pads are the same shape as Beyerdynamic 770/880/990 pads, though pad rolling usually results in a huge lack of bass.

 

They are, indeed, bass light.  The bass that's there sounded good, but there just wasn't enough for me.  It is probably good for music mixing and listening to, say, acoustic music and jazz.  That said, I can't recommend them for rock, pop, orchestral music or electronica.  The bass simply doesn't have much punch.  Of course, none of the other ones you listed really do either.

 

To compare those three, the GMP 450 Pro is highly musical, easy to listen to, and has a nice wide airy soundstage.  They are midcentric, but have nice clear highs as well.  They are also extremely comfortable, though they don't feel especially durable.

 

The DT48 comes from a completely different universe.  They are extremely precise audio tools, and the midrange is truly unparalleled.  With them, you hear absolutely everything that's in the recording, whether you want to hear it or not.  They are also fairly light on bass, and also roll off a bit at the top end.  They are significantly heavier and less comfortable, though they could probably survive anything you would put them through.

 

The Fostex T50RP is an ortho, so you're looking at a totally different technology.  Stock, they are much darker than the other two--they are detailed, but they have a warmth that the others don't have.  They have a well-balanced sound spectrum as well, though I found stock they sounded just a little bit "off"--they didn't play as coherently as the other two.  With some modding, they can be turned into almost anything you could want, but if you're not after bass, other orthos might be a better choice.

 

I hope that helps.


Thank you very much for your attention joelpearce!

 

Would you say that for someone who can accept the sound of the Head Direct RE0 IEM, the Charteroaks would have a reasonable amount of bass?

 

Did you actually replace the earpads on the Charteroaks? Or did you at least get to take off the stock ones?

 

I ask you this because, a couple of weeks ago, I had the oportunity to hear (in non optimal conditions) and compare head-to-head the MB Quarts QP 450 and 400 and I liked more the sound of the QP 450 which, from what I've read, is the same as the German Maestro GMP 450 Pro. They use the same earpads but I still don´t know if they sound exactly the same... so being able to switch earpads is very important to me. Curiously I found out that the MB Quarts QP 400 sounds nothing like the descriptions I've read for the German Maestro GMP 400 sound, it's actualy the complete opposite...

 

Oh, one more thing.

Tonal accuracy and detail retrival... how would you rank those three headphones(Charteroak, Fostex and Beyer)... and others that you've heard or owned, if possible...

Okay just skip the Beyerdynamic DT48...

 

Is there anyone else that has heard the GMP 450 Pro? More input please!

 

stokitw?!!

 

Thanks!


Edited by kkl10 - 12/26/10 at 11:49am
post #30 of 356


 

Quote:
Originally Posted by kkl10 View Post

Hello fellow Headfiers!

 

I'm new here but have been hanging around looking for my first full sized headphone to pair with my Yulong D100.

I apologise for reviving this thread but it seemed to be the more apropriate place to post my questions.

 

After a long and pacient search and reading on Head-fi and other sites, I think that my final decision on my first full sized headphone will be one of these three German Maestro sets:

 

GMP 400

GMP 435s

GMP 450 Pro

 

Unless anyone changes my mind, it will probably be the 450 Pro. I have some critical questions though...

 

1. Is it possible to replace earpads on the 450 Pro?

2. I still don't get one thing... is the GMP 450 Pro bass light or not? (I'm no basshead I want balanced sound)

 



This thread can also be of some help: http://www.head-fi.org/forum/thread/404143/compared-three-germanmaestro-headphones-previously-mb-quart

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