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Ultrasone pro 900 for use with iPod?

post #1 of 31
Thread Starter 

Hi Head-Fi:

I have decided that I am going to go with an Ultrasone. I had originally decided to go with the HFi-780, but am now considering the longevity of a proline headphone. I really like the velour pads and removable cable that the pro 900 offers; however my concern is that most of my mp3s are at 256 bitrate and the others are burned off of CDs at watever bitrate itunes compresses them at. Will the titanium drivers on the pro 900 make my recordings sound terrible? and will I need a small amp like the ibasso t3 or Cmoy to power them?

Thanks in advance.  

post #2 of 31
Thread Starter 

BUMP

post #3 of 31
Thread Starter 

Nevermind, this is probably just a stupid question, Ive never even heard of  a pro serious being used as a portable.

post #4 of 31
Quote:
Originally Posted by mrmonday View Post

Nevermind, this is probably just a stupid question, Ive never even heard of  a pro serious being used as a portable.


If you plan to use them with your ipod, a portable amp is recommended. 

post #5 of 31
Quote:
Originally Posted by desktophifi View Post



Quote:
Originally Posted by mrmonday View Post

Nevermind, this is probably just a stupid question, Ive never even heard of  a pro serious being used as a portable.


If you plan to use them with your ipod, a portable amp is recommended. 


Agreed. Although having a low impedance, they do greatly improve from proper amplification.

post #6 of 31
+1 on the amp
post #7 of 31

+2, ipods alone cannot drive the headphone thus limiting its full potential

post #8 of 31

The Ultrasone Pro 900 sound terrible running through a iPod or iPhone without a Headphone amp. Trust me on this...I own a pair. So if its big bass on the move through an iPod/iPhone you are after these headphones will NOT do it for you.

 

The impedance of the Pro 900 is 40 Ohm which is big...remember, the less the Ohm figure the harder the headphones are to drive.

 

I have a pair of Pro 900's at home and they really only deliver though a good sound stage...I have them running through my main AMP, which really drives the Pro 900's very well. I have several headphone AMPs...some of which are billed as 'portable', even these don't really deliver. So be careful when choosing your headphone AMP - get something that will drive a 40 Ohm easily...not just about.

 

If you are looking for portable headphones with big bass you should demo the Ultrasone HFI-680...I have a pair of these for that reason (for my iPhone). These have a much lower impedance (75 Ohm), which an iPhone or iPod will easily drive. These sound 100% better than the Pro 900 on the iPhone (without a headphone AMP). They smash them off the block actually...the bass WAYYY bigger, sound stage fuller and just sound so much better really. The difference is MASSIVE. You can get a pair of these from Amazon at the moment for only $140 or there abouts....thats a bargain! 

 

The HFI-580 don't really deliver & the HFI-780's Bass is loose and unattractive + these also have a high impedance, at 40 Ohm I think.

 

I'm not saying DONT get the Pro 900's because they are amazing through a powerful AMP or very good headphone AMP, but they have to be paired carefully. Consider what/where you will use your headphones for the majority of the time. If its sat on a train or at work with an iPod/iPhone get some headphones that are very easy to drive. If its at home through a good system, home cinema or a studio etc. get something that delivers through an AMP or good quality headphone amp. You can spend a lot of money and get something that doesn't sound great - I see people with $1000 earphones hooked up to iPhones all the time, when they could have spent $100 and got something that sounds SOOO much better.


Edited by 78finn - 8/5/11 at 10:11pm
post #9 of 31

HOLD UP.

 

Less impedance arrow-big-up.gif difficulty in driving? 

 

Isn't it the other way ...

post #10 of 31

No...

 

A headphone with a rating of 40 Ohm will be harder to drive than a headphone with a rating of 75 Ohm.

 

Thats how it works.

 

A lot of people on hear get that wrong. 

post #11 of 31
Quote:
Originally Posted by 78finn View Post

The Ultrasone Pro 900 sound terrible running through a iPod or iPhone without a Headphone amp. Trust me on this...I own a pair. So if its big bass on the move through an iPod/iPhone you are after these headphones will NOT do it for you.

 

The impedance of the Pro 900 is 40 Ohm which is big...remember, the less the Ohm figure the harder the headphones are to drive.

 

I have a pair of Pro 900's at home and they really only deliver though a good sound stage...I have them running through my main AMP, which really drives the Pro 900's very well. I have several headphone AMPs...some of which are billed as 'portable', even these don't really deliver. So be careful when choosing your headphone AMP - get something that will drive a 40 Ohm easily...not just about.

 

If you are looking for portable headphones with big bass you should demo the Ultrasone HFI-680...I have a pair of these for that reason (for my iPhone). These have a much lower impedance (75 Ohm), which an iPhone or iPod will easily drive. These sound 100% better than the Pro 900 on the iPhone (without a headphone AMP). They smash them off the block actually...the bass WAYYY bigger, sound stage fuller and just sound so much better really. The difference is MASSIVE. You can get a pair of these from Amazon at the moment for only $140 or there abouts....thats a bargain! 

 

The HFI-580 don't really deliver & the HFI-780's Bass is loose and unattractive + these also have a high impedance, at 40 Ohm I think.

 

I'm not saying DONT get the Pro 900's because they are amazing through a powerful AMP or very good headphone AMP, but they have to be paired carefully. Consider what/where you will use your headphones for the majority of the time. If its sat on a train or at work with an iPod/iPhone get some headphones that are very easy to drive. If its at home through a good system, home cinema or a studio etc. get something that delivers through an AMP or good quality headphone amp. You can spend a lot of money and get something that doesn't sound great - I see people with $1000 earphones hooked up to iPhones all the time, when they could have spent $100 and got something that sounds SOOO much better.



Welcome to Headfi.  Before you rush in sharing your technical knowledge, it is probably advisable to get some.  Your Ohm rambling is just that. Try searching for "sensitivity" here on Headfi, and I am not referring to someone being sensitive. 

 

"Essentially the sensitivity is a measure of the sound pressure level (SPL) in your ear per mw of applied power, the higher the number the higher the SPL ergo the higher the volume."

The Pro900 is not an overly difficult headphone to drive, albeit it does scale up with a bit of power.  I prefer the Pro900 with a reasonable amp, but I wouldn't say it is bad straight from a decent DAP.


Edited by Kernmac - 8/5/11 at 11:14pm
post #12 of 31

The same goes with speakers....

 

Speakers with a rating of 4 Ohm or 6 Ohm will be hard to drive than a 8 Ohm speaker.

 

Thats why you have to be really careful when choosing AMP speaker combos and headphones.

 

Headphones with a low impedance sound great when linked up to an AMP but sound awful when hooked up to an iPhone or iPod. headphones with a high impedance will sound about the same when plugged into either.

post #13 of 31

I'm not sure about the exact number, but I'm pretty sure you can get down to the 20s and 30s of impedance-- which are the easiest to drive overall, while lower than that starts drastically requiring more and more wattage-- and going up requires gradually more voltage.  Why would earbuds-- specifically for use with mobile devises, have impedances of around 20Ω?

 

post #14 of 31

Lol. Okay man, whatever you say. 

post #15 of 31

haha....whatever. Have you got or tried either of the headphones we are talking about? More to the point, have you compared both on an iPhone, Amp and headphone Amp?

 

As for the Pro 900 not being demanding? What an earth are you talking about??? It simply is. If you dont drive it with enough grunt you are missing the point in owning it as you will simply not get as much from the Pro 900 as you could be.

 

Which is my point. Running the Pro 900 from an iPod or iPhone is a pointless / expensive exersize...as you could buy something for half the price and get a better result.

 

Impedance also does play a huge part in how easy something is to drive. I also love your little cut and paste from Wikipedia...that was really lovely of you : ) hahaha....

 

So, have you tested the HFI-680 and Pro 900 side my side with a range of sources? I very much doubt that you have. If you had, well you would be agreeing with me at this point.

 

If you haven't then your comment is pointless and worthless.

 

Suggest you have a point before you raise one sweat heart.

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