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Amps that can drive the HiFiMan HE-6 planar headphones - Page 194

post #2896 of 3098
Quote:
Originally Posted by ohhgourami View Post
 

 

...................

 

The soundstage isn't as wide on this 300cx compared to the 400xi, but it goes very deep. Actually, this amp makes anything I've heard seem 2D. Other very good amps still seem like very well layered images while this amp is real 3D space. You are inside the music, it is not just floating past!

 

...................

Don't mean to be anal but does "any other amp" include the 400xi as well ? Or, IYO, does every "good" Krell occupy the 3D space?

 

Thanks

post #2897 of 3098
Quote:
Originally Posted by ohhgourami View Post
 

 

when plugged into straight into the taps with no resistors, the background is almost perfectly black.

Thanks for the impressions. Is it your intention to use resistors? How's the volume control?

post #2898 of 3098
Quote:
Originally Posted by micmacmo View Post
 

 

Over at diyaudio.com, a user named AGDR created a desktop version of the popular O2 amp. It was designed specifically to drive headphones like the HE-6. You can read about on head-fi, too.

http://www.head-fi.org/t/719611/objective-desktop-amp-a-version-from-agdr

 

If you're interested in a DIY tube amp, I've been told by someone I respect that the Project Ember amp from garage1217.com sounds terrific with the HE-6.

 

Personally, I've been experimenting with Class-D amp modules. These are intended to drive speakers, but I've had good success using them with my HE-6 with a simple L-pad resistor network to attenuate the gain and ensure that the amp sees a 6-ohm load. You can read about these modules on various forums, but this one at diyaudio is very active. These modules typically consist of a PCB fully populated with the chip, caps, resistors and inductors. All you need to add are the enclosure, cables and connectors plus cheap power supply. I can't think of a more entertaining way to spend $25US.  

Great info thanks so much man. The Project ember amp looks like a great deal . Excellent bang for the buck kind of thing.

 

@pachoo5 it would behoove you to check that amp out! You can buy them pre-made as well!

post #2899 of 3098

Does the project Ember amp work with 220-240V as well ?

 

Thanks

post #2900 of 3098

Just a word of warning for the agdr-version of the O2:  know that it's been tested and there are some areas of concern, see post 334 here:

 

http://www.head-fi.org/t/616331/o2-amp-odac/3045#post_10608737

 

Note that this deals with the 'booster board', it's not the same as the complete version which is showcased on diyaudio.  My personal appreciation (of the complete version) is that it looks like a very interesting product and beyond a doubt the developer is very talented but I also think that a no holds barred completely from scratch approach might be better vs working based on the O2 design.  

 

Given the specs (sensitivity of the HE-6, slew rate of the op-amps used, voltage)  it should theoretically be able to drive the HE-6.  I haven't tested it (yet) but any prospective buyers would do well to take an in-depth look at the product and decide for themselves, this is not a plug and play product, more of a niche item for interested techies at this point.

 

Also:  EU users should know that due to EU environmental legislation (energy saving),  you will not be able to purchase the type of wall wart necessary to provide power for it in Europe.   Building your own with e.g. a small toroid is trivial but just so you know....this is not a slam dunk guaranteed thing.

post #2901 of 3098

:thumb: It's a good thing I'm in North America so I can delight in my HE-6/Shindo Laboratory pairing...sorry EU!

post #2902 of 3098

Tested the Lavardin IS Reference with SA-2 yesterday: this is one smooth bastard! Completely free of any etch, grain or whatnot in the sound. I was way too tired to do any critical evaluation but I felt sucked in the performance and just enjoyed the ride.

It is a warm amp so the SA-2 with the OR5 might not be an optimal pairing (warm + dark). Waiting for my Hugo, hopefully by the end of next week. I put the 560's pads, the Audeze vegan were too much.

post #2903 of 3098
Quote:
Originally Posted by Xenophon View Post
 

Given the specs (sensitivity of the HE-6, slew rate of the op-amps used, voltage)  it should theoretically be able to drive the HE-6.

 

In theory one could also construct a simple IC circuit with three chips and no caps or resistors in the signal path and drive the HE-6. It won't sound very good, but hey in theory...

post #2904 of 3098

here's a question for u'z guys.

 

Hows the HE 6 off a AUdio GD NFB 10ES2, you think it'd be a step up from my he 4 [using balanced out ofc] 

post #2905 of 3098
Quote:
Originally Posted by kothganesh View Post
 

Don't mean to be anal but does "any other amp" include the 400xi as well ? Or, IYO, does every "good" Krell occupy the 3D space?

 

Thanks


Let's put it this way. The 400xi makes other amps sound 2D also, but the 300cx is just another tier above. The 400xi is still a very good amp, but can't expect to compare to an amp that had cost 4x more back in 2005.

post #2906 of 3098

been reading through this thread for hours. can't find a numerical reference point, does anyone have one? I read once on a review that one needs 2 watts into 50ohms to be safe. (I'm concerned because I'd only be putting in 1.9 and change..)

post #2907 of 3098
Quote:
Originally Posted by purplegoat View Post
 

been reading through this thread for hours. can't find a numerical reference point, does anyone have one? I read once on a review that one needs 2 watts into 50ohms to be safe. (I'm concerned because I'd only be putting in 1.9 and change..)


With resistors on the 400xi, I was putting in 0.1wpc. It's about the power supply.

post #2908 of 3098
Quote:
Originally Posted by ohhgourami View Post
 


With resistors on the 400xi, I was putting in 0.1wpc. It's about the power supply.

derp. so what the number I need to be looking at?

 

 

edit: btw it's not that I don't trust your initial reply, I just want to understand what's going on so I can evaluate between the HE-6 and HD800. thanks


Edited by purplegoat - 6/8/14 at 1:11pm
post #2909 of 3098
Quote:
Originally Posted by purplegoat View Post
 

derp. so what the number I need to be looking at?

 

 

edit: btw it's not that I don't trust your initial reply, I just want to understand what's going on so I can evaluate between the HE-6 and HD800. thanks


Your amp can deliver 180wpc @8ohm. That is pretty telling that the transformer is quite large. That itself is a good hint it can deliver good power for HE-6 already.

post #2910 of 3098
Quote:
Originally Posted by Velomane View Post
 

Thanks for the impressions. Is it your intention to use resistors? How's the volume control?


Even with black background, it is still my intention to use resistors as I'd like just a bit more play with the volume control. I find the music a half step too quiet or too loud. I'm also thinking about applying replaygain to my whole library again so maybe that would fix the issue as it might just adjust it perfectly to the level I like. If not, I'll be using ACSS>CAST which has a different output level to XLR. I'm still waiting for my cable to be built and shipped to me. Hopefully will know in another week.

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