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Possible Amps for the HE90 - Page 2

post #16 of 109
Sounds good Agile_One.

I also wonder whether we could pool our buying power to get a deal on a custom amp to our specification, specially tuned to drive the HE90. An HE90 amp group buy of some sort.

BTW, NeilPert and I will be comparing the KGSS v. KGBH to drive Alex's HE90 next week (when we get the Moon Audio adapter). NeilPert is experienced enough to write a good review afterwards.
post #17 of 109
Nice idea for and HE90 amp summit, Gene. But really, you guys have nothing to worry about. The HE90's will sound amazing out of any amp that will drive them. The 007t would be a great place to start (as would several other amps in the more affordable price range, such as a KGSS, etc). In no time, there will be tons of comparisons being done and reported on.

Ok, so I'm saying Chicago, Denver, or Atlanta. Fun places all.
post #18 of 109
^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
PATB: Terrific you and Neilpeart have access to Alex's gear, and I will be anticipating your take on the kgss and kgbh.

Your thoughts on a group buy on a similar spec'd amp from a quality builder is a good one, also. One of the issues I've always been bothered by is the high varibility among kgss amps made so far - some great, some real horror stories. If a batch could be made to similar specs at one time, that should yield better quality control.

The Stax 007t sounded great to my ears, and I would love an opportunity to compare with the kgss & kgbh, SinglePower, Rudistor (Egmont), McAlister, and, of course, an HEV90 in one session. Similarly, I would love the chance to hear other sources, including vinyl, than the Sony SCD-1 (which sounded absolutely terrific) that I have heard.
post #19 of 109
Quote:
Originally Posted by Wmcmanus
....

Ok, so I'm saying Chicago, Denver, or Atlanta. Fun places all.
lol - you kill me, Wayne.
post #20 of 109
Quote:
Originally Posted by agile_one
Jason - I think you've listed all the usual suspects in your initial post. I have only heard the HE90 with a Stax 007t, so am in no position to be advising anyone which amp is good, bad, best, or otherwise.

I can say, however, that the HE90 does sound glorious driven by that 007t with a Sony SCD-1 as source.

Your post got me to thinking, though, and half seriously, half tongue in cheek, I have a proposal to make. When these 18 new Orphei find their way to 18 happy Head-Fi'ers (or even some non Hear-Fi individuals - who knows?), maybe we should have an amp selection summit? A meet for the sole purpose of finding the most synergistic amp, cables, and sources for the HE90.

It would need to be in some easily accessible location (city with major airport), and Heard-Fi'ers from far and wide could convene with their HE90's and associated gear to compare and share. No need to limit to HE90 owners - Head-Fi is all about inclusion, in my mind, and there are many experienced ears out there with valuable listening skills to share.

So, what do you all think? Anyone up for that?
The next NY meet,I already have 3 amp contenders in house, The stax 007t does sound good with the HE90,I actually liked the 007t amp better with the Senn HE60 & HE90 over the omega IIs.

The singlepower 2 box amp will be assessed & tweaked & is waiting on a blackgated/piltron power supply which was not ready in time for the last NY meet.
post #21 of 109
So far, third party electrostatic amps are tuned to drive Stax Omega IIs. The problem with that is the Omega IIs sound totally different from HE90s, from what I have been reading anyways. While the HE90s will sound good from most amps, we will not extract the best possible sound without a specially synergistic amp, like the HE90V.

I am wondering if Dr. Gilmore, Mr. McAlister, Rudi, or Mikhail can come up with an amp tuned to the HE90's impedance and drive characteristics, at a reasonable price. Better yet, I am wondering if the Gilmore designs can be tuned to drive an HE90.
post #22 of 109
No tuning required. A bump from 560 to 580 volts of bias is all that
is needed. Electrostatics are almost pure capacitors and are easy
to drive.

Any electrostatic amp will drive these headphones. The only issue
is voltage swing which influences maximum spl. You could easily
drive them with a srm-212 if you wanted to.
post #23 of 109
Quote:
Originally Posted by kevin gilmore
You could easily drive them with a srm-212 if you wanted to.
Watch the sales of those rocket through the roof.

Oh that's it rub it in for us mere mortals. Usually this side of the forum is filled with pimeta and cmoy questions. Now we have Kgss and blue hawaii's and all sorts. Oh the humanity.

I can see the next few thread titles for months.

"Can anyone recommend a cd player for my he90-I am using an ipod at the moment"

"can anyone recommend a suitable IC for my portable stax unit to He90"

"Is it possible to order flat pads for my he90's?"

"If I use foobar and use EQ'ing will it damage my he90's"

post #24 of 109
Quote:
Originally Posted by bozebuttons
The next NY meet,I already have 3 amp contenders in house, The stax 007t does sound good with the HE90,I actually liked the 007t amp better with the Senn HE60 & HE90 over the omega IIs.

The singlepower 2 box amp will be assessed & tweaked & is waiting on a blackgated/piltron power supply which was not ready in time for the last NY meet.
Your killing me Tom !!
post #25 of 109
The reason i mentioned the srm-212 was because it will run
off a 12 volt lead acid battery. Therefore making it portable.
The ultimate in portable hifi. Similar to what i used to do with
the o2's.

I do have a new portable design for electrostats, but it uses
a pair of power supply bricks that are NOT cheap. Very few
around here are capable of hand winding their own switcher
transformers.
post #26 of 109
Quote:
Originally Posted by GoRedwings19
"Can anyone recommend a cd player for my he90-I am using an ipod at the moment"

"can anyone recommend a suitable IC for my portable stax unit to He90"

"Is it possible to order flat pads for my he90's?"

"If I use foobar and use EQ'ing will it damage my he90's"

Those are the questions I was about to ask, LOL
That, and "Will I get mugged if I wear my he90's out in public with my 24K gold plated iPod?"
,
Abe
post #27 of 109
Quote:
Originally Posted by seeberg
Those are the questions I was about to ask, LOL
That, and "Will I get mugged if I wear my he90's out in public with my 24K gold plated iPod?"
,
Abe
And here i thought one guy i stumbled over at MystikRiver was crazy for using the Qualia from his iRiver as his portable 'phone.
post #28 of 109
Quote:
Originally Posted by Covenant
And here i thought one guy i stumbled over at MystikRiver was crazy for using the Qualia from his iRiver as his portable 'phone.
wtf? Man, that is crazy! I've seen a pic of an iPod hooked up to a pair of PS1's as portable, I think it was GoRedwings19, although I could be wrong.
But still, it's just as crazy.
,
Abe
post #29 of 109
Quote:
Originally Posted by seeberg
wtf? Man, that is crazy! I've seen a pic of an iPod hooked up to a pair of PS1's as portable, I think it was GoRedwings19, although I could be wrong.
But still, it's just as crazy.
,
Abe
lol, i agree. I saw a pic of the Qualia connected to an iRiver in his sig, and just had to ask. Here's our correspondence:

Originally Posted by Covenant
I took one look at that pic in your sig, and thought to myself, "He paired a H320 with a QUALIA?!?"
Tell me its not true

Response:
You're right in that I rarely pair the H320 with the Qualia. The iPod is my primary portable and the 010 is used with that. I just listed the iRiver portables I have in my sig, since Misticriverers seem to be a defensive bunch
But in all seriousness, yes, the Qualia 010 is my open portable phone. My home phones are the Stax Omega II.

My Reply:
Can i come over your place?

Seriously though, i thought the Qualia demanded a monster of an amp to sound anywhere near its full potential, sounding hollow and "cavernous" when under-driven. What sort of an amp do you use this with in a portable scenario? The SR-71 is the beefiest portable i know of, and i that wouldn't suffice.

His response:
Don't believe everything you read. The 010 is a fairly efficient phone for a full-sized article and is "fullydriven" by even the iPod headphone amp.
post #30 of 109
I went over to misticriver (don't really care for it- HeadFi is my first love) and saw that thread on headphones and the guy you were talking about.

Something about his last reply strikes me as odd- Qualia 010's fully driven out of an iPod? whatwhatWHAT? No way, I don't believe it. I imagine they can be driven loudly, but they won't sound anywhere near as good as they have the potential to.]

BTW, now that I think about it, wasn't there a flame war over there that spread over here that you were posting about? Something about ipoo? I remember that. Those guys that trickled over here were jerks, no offense.
,
Abe
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