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HeadAmp AE-2 impressions (w/ burn-in updates) (over) - Page 5

post #61 of 142
does the ae2 drive your 701 well?
post #62 of 142
Quote:
Originally Posted by GreatDane View Post
And that's a good thing right?
________
I did some listening last night with my ER4P and comparing my AE-2(now @ 100 hours) and SuperMini IV(default op-amp,upgraded but not the latest).

I used my Elite player/Central Station DAC as source.

The SuperMini IV has just been kicked aside!

edit-I just wanted to add some impressions from my SM/AE-2 comparison. First off, I needed to disable the impedance switch on the SM because normally I use the P>S conversion. Also the bass boost was disabled.Gain remained at low & crossfeed off.

I don't have a L&R 1/4" to stereo mini cable so I had to use a L&R 1/4" to L&R RCA , then RCA couplers to connect a L&R RCA to stereo mini cable. These are not high grade cables either but the playing field was equal even still(1/8" inputs used on both amps). Since the AE-2 has the convienent RCA inputs this is how I normally connect.

I listened to a few Diana Krall, Jane Monheit and Tierney Sutton tracks, later focusing on one Krall track which has few instruments with clean, crisp cymbals to test high freq. and "air".

In the end I could quite easily hear greater treble extension with the AE-2 with more space around instruments. Midrange with the AE-2 was more prominent which I prefered. These tracks did not test for any bass qualities.

My "kicked aside" comment was not to say that the SM won't still be used because only it can do P>S conversion and bass boost which makes the ER4P very enjoyable when using my iPod/line out...which I consider to be fun listening rather than critical listening. This comparison was only meant for IEMs and not full size which the SM can't even attempt to drive nearly as good as the AE-2. batteries used in the SM were Energizer lithium.

For example, I switched the SM gain to high(all other switches same). I listened to a vocals only track from a Brian Setzer CD- Nitro Burnin Funny Daddy. The AE-2 in high gain, volume at around 12~1 O'clock was sounding mostly unstrained with DT-880(250 Ohm) pegging my RS SPL meter at 90 dB. setting(96 dB.+ peaks)...I did not listen at this volume long, this was its limit. Using the same song, the SM was only able to drive the DT-880 to around 72 dB. before clipping. With bassy tracks this max. volume drops lower.

My last comparison was AE-2 vs. Central Station amp section (both using CS DAC). I easily noticed greater treble extension with the CS. AE-2 had more prominent mids which again I prefered. Note that the signal to the AE-2 needed to pass externally via single 6' generic cable(RCA input) whereas the CS had the advantage of shorter internal path.
Ohhhh you are killing me......
post #63 of 142
GreatDane, what op-amps are in your Supermini?
post #64 of 142
Stole this from the Portable amp roundup thread:
Quote:
Originally Posted by Asr View Post
For me personally, the portable amps I've heard recently do not compare to the Gilmore Lite v2, with or without the DPS. My experience with portables so far leads me to believe that amps running solely on AC power have a significant advantage over battery-powered amps and help add grounding in the bass, control over layer separation, and overall blackness to the background, which can be big differences if you have equipment high-end enough to render those differences.
I imagine to have the AE-2 some advantages against over portable headphone amps, cause:
Quote:
A Lithium-Ion battery pack powers the AE-2...Lithium-Ion batteries are also excellent for audio, their low impedance able to supply large amounts of current quickly.
A Gilmore Lite can be still better, ´cause it doesn´t use an op-amp for audio, but portable headphones amps do. Another advantage for the AE-2 is, that it uses Class-A, Should sound better than portable like AE-1 that uses something like Class-ABCD.

From headamp´s web-site:
Quote:
At any gain level and with any headphone, you'll find the AE-2 to have a completely silent background.
Would be nice, but my Shure SE530 even have hiss with a RSA SR-71. I doupt a AE-2 would be better. But better than cheap tube-amps, these hiss and hum like bees.
post #65 of 142
@ manhattanproj- I don't own the K701 if that was directed at me.

Quote:
Originally Posted by Filburt
GreatDane, what op-amps are in your Supermini?
I'm using default op-amps. I haven't tried any others and honestly haven't learned enough about the subject to explore this further.


Quote:
Originally Posted by Nattydraddy
Would be nice, but my Shure SE530 even have hiss with a RSA SR-71. I doupt a AE-2 would be better. But better than cheap tube-amps, these hiss and hum like bees.
I no longer own any Shure IEMs but with my ER4P these are my findings:

AE-2/high gain with no source connected: hiss barely becomes noticeable at 12 o'clock, easily noticable at 2 o'clock.

AE-2/high gain with iPod connected via ALO Bling Bling LOD: (track in pause), hiss becomes barely noticeable at 10 o'clock, easily noticeable at 12 o'clock. note- with track playing, my normal listening volume would be around 8 o'clock and 9 o'clock is an estimated 85 dB.+ (track was "Follow Your Leaders" from The Tangent).


AE-2/low gain with no source connected- at 2 o'clock I could barely hear hiss and this was very slight(it took a dead quite bathroom to discern), at even maximum volume (5 o'clock) there is virtually no hiss. The only noise that I heard was a slight scratchy hiss/pop as the volume came down from 5 o'clock- this was heard at 4 o'clock as I was quickly turning the volume down.

AE-2/low gain with iPod connected as before(track paused). At 12:30 o'clock hiss becomes barely noticeable, easily noticable at 2 o'clock.note- my normal listening volume would be around 10 o'clock or less. At 11 o'clock loudness is an estimated 85 dB.+. The track listened to was "Up-Hill From Here" -The Tangent.

These comments were typed as I ran through these tests.
post #66 of 142
GreatDane send the Supermin IV back to Dr. Xin for the 4/11/07 updates. While in his hands have him install: LM4562 L/R w/ no buffers in L/R, AD8599 in 3/4. Then do the comparison again.

If you are not impresed by the improvements I will buy from you the Supermini IV (w/ all the op-amps) for $200 (including S&H to Zip Code 33139). That is one heck of offer.
post #67 of 142
Quote:
Originally Posted by mrarroyo View Post
GreatDane send the Supermin IV back to Dr. Xin for the 4/11/07 updates. While in his hands have him install: LM4562 L/R w/ no buffers in L/R, AD8599 in 3/4. Then do the comparison again.

If you are not impresed by the improvements I will buy from you the Supermini IV (w/ all the op-amps) for $200 (including S&H to Zip Code 33139). That is one heck of offer.
I did plan to send my Mini back to Xin but the other day his site must have been down and I haven't tried to contact him yet.

Is that op-amp configuration the best in your opinion? I know next to nothing about the subject but I would like to roll in the best options for the mini.

If that info you stated is correct I'll copy & paste that into my e-mail to Xin when I inquire about the upgrade. I know I'll be paying extra for the change in op-amps.

Thanks
post #68 of 142
I'm thinking about ordering the AE-2. Has anyone tried it with the K701? My only concern is whether it has enough power to drive some of my full size headphones like the 701. I like the RCA connections in the back so that at home I can easily connect it to my home stereo. It makes for a nicer looking connection to home stereos than having bulky cables wrapping around the front of the amp. Also, I think its the best looking portable amp by far.
post #69 of 142
Quote:
Originally Posted by GreatDane View Post
I did plan to send my Mini back to Xin but the other day his site must have been down and I haven't tried to contact him yet.

Is that op-amp configuration the best in your opinion? I know next to nothing about the subject but I would like to roll in the best options for the mini.

If that info you stated is correct I'll copy & paste that into my e-mail to Xin when I inquire about the upgrade. I know I'll be paying extra for the change in op-amps.

Thanks
IMO it is. Another good one would be to install the AD8656 in the L/R and the AD8616 in the 3/4 with all buffers bypassed.
post #70 of 142
Quote:
Originally Posted by mrarroyo View Post
IMO it is. Another good one would be to install the AD8656 in the L/R and the AD8616 in the 3/4 with all buffers bypassed.
Thanks again. Can you explain the differences between those two configs?

I like extra low bass and upper treble if that helps.

Quote:
Originally Posted by SteveM324
I'm thinking about ordering the AE-2. Has anyone tried it with the K701? My only concern is whether it has enough power to drive some of my full size headphones like the 701. I like the RCA connections in the back so that at home I can easily connect it to my home stereo. It makes for a nicer looking connection to home stereos than having bulky cables wrapping around the front of the amp. Also, I think its the best looking portable amp by far.
It drives my HD 650 & DT-880 very well. I also like the RCA connections very much. The LaRocco is the only other amp that comes to mind that has such a refined look but it's much larger. While I have considered buying a Hornet, I don't like the looks of the screws on the back. With the AE-2 the case is totally smooth.
post #71 of 142
which is more power hungry: 650/880 or the 701?

another question that i have is: how do you know whether an amp has enough power to drive the phones - from trial and error meaning actual use or can you tell from looking at the specs?
post #72 of 142
Quote:
Originally Posted by GreatDane View Post
I did plan to send my Mini back to Xin but the other day his site must have been down and I haven't tried to contact him yet.

Is that op-amp configuration the best in your opinion? I know next to nothing about the subject but I would like to roll in the best options for the mini.

If that info you stated is correct I'll copy & paste that into my e-mail to Xin when I inquire about the upgrade. I know I'll be paying extra for the change in op-amps.

Thanks
Put me 2nd on the queue after MrArroyo
post #73 of 142
Quote:
Originally Posted by manhattanproj View Post
which is more power hungry: 650/880 or the 701?

another question that i have is: how do you know whether an amp has enough power to drive the phones - from trial and error meaning actual use or can you tell from looking at the specs?
I don't have a good answer for that because I've never used the K701 and just sold my 600 Ohm AKG K240M which was difficult to drive. between the HD 650 & DT 880 I don't know either because I've never really tested for that.

I'm not qualified to give you any super detailed info about the subject. For me it's a matter of trial and error.
post #74 of 142
Quote:
Originally Posted by EFN View Post
Put me 2nd on the queue after MrArroyo
No way ! I want the latest and greatest. After a total of 14 weeks waiting so far for my Supermini IV I would have a hard time selling.

I'm anxious to get it upgraded now.
post #75 of 142
Quote:
Originally Posted by GreatDane View Post
No way ! I want the latest and greatest. After a total of 14 weeks waiting so far for my Supermini IV I would have a hard time selling.

I'm anxious to get it upgraded now.

DANG!!
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