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HEAD-DIRECT EF-5 Headphone amplifier - Page 5

post #61 of 295
the amp looks so tempting. DY means power source in Chinese guess they may release dy-2 as upgrade version of dy 1.
post #62 of 295
man..how didn't i think of that? getting the seperate power supply for the EF1! this is a great idea, hope it can be done.
do you think it would be a worthwhile improvement for the EF1? .. If yes, than i would seriously think of getting it.
post #63 of 295
Is this area open to air , if yes , so the amp will be full of dust after 2 months

post #64 of 295
Quote:
Originally Posted by koc View Post
Is this area open to air , if yes , so the amp will be full of dust after 2 months

Mine has maybe a 16th or 24th of an inch gap between the clear cover and amp, and I'm sure a bottle of compressed air could take car of any dust that does get in.
post #65 of 295
Quote:
Originally Posted by HeadphoneAddict View Post
So far the EF5 is very nice sounding, and a great match for the HE-5 orthodynamics, with a nice frequency response, timbre and tone. It is very musical and rich, and not dry or lifeless. It also sounds fairly well refined, like a more expensive amp.
My thoughts exactly.

Quote:
The EF5 has more than enough power for the HE-5, and normal listening with either amp is with the volume knob at about 10 o'clock with the EF5 in low gain. In low gain I cannot turn the volume up past 2-3 o'clock before it is louder than I can stand.
Same here, although for me I'm at my limit between 10 and 11. If it is a close mic'd piece or some modern pop or rock recording I'm stuck around 10:30 but for something well recorded, I can get past 11 but never above 12. Still that is a good 1/2 rotation of the knob and good use of the gain.

Quote:
The EF5 soundstage is nice and big for a single ended amp, and compares well to the SAC amp which is a little more forward sounding in the mids than the EF5 but without making the EF5 sound recessed at all in the mids either. Likewise, the SAC is not close to being too forward either. The HE-5 obviously don't have as deep a soundstage as the HD800, but with the EF5 and SAC amp I think it is better than my RS-1 with flats (it was nice with the WA6 too).
The HE5 has more drive than the HD800s. More PRaT and a sense of liveliness that the HD800s simply lack (and I now think this is simply endemic of the design) The HD800s do have a nice soundstage and headstage, whereas the HE5's are very closed in sounding in comparison, no matter what amp I have tried them with. Apparently this is part and parcel in being a ortho. Still, the EF5 controls them well and tightens up the bass over the EF1. The bass is well defined and very deep. It is easy to follow each and every note while maintaining a wonderful foot tapping experience.

Quote:
That's all I have to report on the sound right now. I did try turning the volume down and there is still some channel imbalance introduced at very low volume levels, but below volume levels that I would listen to with full size phones.
I heard this too. It takes but a hair to get past it and the channels come together nicely, just around 6:30 or so on the dial.[/quote]

Quote:
But I fear this may mean still needing to use a volume attenuator when using IEM with the EF5 in low gain. I will try IEM with it later. Fortunately the EF5 does not let music leak through when the volume knob is set at Zero, like my old EF1 did.
I agree again. I've yet to hear anything that adequately powers the ES3Xs. It takes attenuators or a software/hardware combo to get the volume just right. I'm very excited to encounter a product that will adequately power them, permitting the user to use more than a nanometer of dial turn before fearing deafness.

The EF5 is well built and has guts. I'm excited to test out some other headphones with it. I'm using the EF5 with the Hifiman HM-801 but will test it out in the main rig in the coming days.
post #66 of 295
Quote:
Originally Posted by Zanth View Post
The HD800s do have a nice soundstage and headstage, whereas the HE5's are very closed in sounding in comparison, no matter what amp I have tried them with. Apparently this is part and parcel in being a ortho.
I think you'll be pleasantly surprised by the Audeze in this regard
post #67 of 295
Quote:
Originally Posted by koc View Post
Is this area open to air , if yes , so the amp will be full of dust after 2 months

That gap w/ the slots on the sides allow the amp to run cooler. I ran tests on the EF-1 after I installed rubber grommets to create a gap and the unit ran cooler. This was verified with my infrared thermometer. So I consider this an improved design overall.
post #68 of 295
I'm still not clear as to whether the DY1 is an option or standard with the amp.
post #69 of 295
Quote:
Originally Posted by erikzen View Post
I'm still not clear as to whether the DY1 is an option or standard with the amp.
It comes with it, I just don't know if you can buy it separately to upgrade an EF1.
post #70 of 295
So the dust can enter the amp , No problem i will call this guy



post #71 of 295
Shades of Javier Bardem in 'No Country for Old Men' .....

Er, where were we ? HPA, would you consider the EF2 (with the right tubes) to be a good amp for the HD600 ?
post #72 of 295
Does one need EF-5 to drive the HE-5 at its potential max (or close to), or can any existing amps do the job?

I am thinking of getting HE-5 to join my HD800, and was wondering whether I need to buy a separate amp for it or not.

I am still in search of amps for HD800, so one that pairs well with both is what I am after.

Any help/suggestion is appreciated.

thanks.
post #73 of 295
I am listening to a EF-5 through a HD650 and I hear more deep base off the right side than the left. This is consistent across several tracks.

I also have a question for the more experienced forum members. While I was playing a George Winston track through the EF-5-->HD650 & then through an Audio GD Phoenix-->HD650, I noticed the piano coming from the right/rear on the EF-5 and then the left/front on the Audio GD Phoenix.

Can someone let me know if this is normal. Never mind, found out it's a cable issue.


Thanks,
GLC
post #74 of 295
Quote:
Originally Posted by estreeter View Post
Shades of Javier Bardem in 'No Country for Old Men' .....

Er, where were we ? HPA, would you consider the EF2 (with the right tubes) to be a good amp for the HD600 ?
I have used the HD600 on the EF2 and it is good enough for them, but it is the minimum that I would use for the HD600. The EF1 or EF5 would be a better choice, but I could be happy with the EF2 and HD600, especially paired with the Nuforce uDAC instead of the built-in DAC. With an external DAC it has more power for HD600 than almost all of my portable amps, with the 3MOVE being the only one that gets close.

The Qinpu A-3 is also a nice budget amp that can drive HD600 and speakers, but you need to supply the DAC (again I would pick the Nuforce uDAC on a budget). Last one to consider for HD600 is the DV336i or SE, but you need to spend $100+ in tubes to get the best sound with DV336 vs $30-40 in tubes for the EF1, EF2, EF5 or A-3.
post #75 of 295
Thanks again Larry - very informative and definitive : these are the kind of recommendations that will put me in good stead next year.
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