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# Light Harmonic GEEK - Page 33

Hi all,

So I suppose I should probably go back and read all 30+ pages, but I was hoping maybe i could just ask here and not get too much guff.  I just learned about this device and it seems to have some nice features.  I'm curious about two things:

1 - Will the base model (the 450mW) be sufficient to drive the AKG Q701?  I believe they're around 50-60 ohms but they're notoriously hard to drive.

2 - When can we expect normal (non Kickstarter) pre-orders to ship?

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Quote:
Originally Posted by Stillhart

Hi all,

So I suppose I should probably go back and read all 30+ pages, but I was hoping maybe i could just ask here and not get too much guff.  I just learned about this device and it seems to have some nice features.  I'm curious about two things:

1 - Will the base model (the 450mW) be sufficient to drive the AKG Q701?  I believe they're around 50-60 ohms but they're notoriously hard to drive.

2 - When can we expect normal (non Kickstarter) pre-orders to ship?

P = V^2 / R
0.450 W = VRMS^2 / 16 Ω
sqrt(7.2 VRMS^2) = VRMS = 2.68 V

Using the measurements from Innerfidelity for the Q 701:
P = 2.68VRMS^2 / 60 Ω
P = 0.12 W = 120 mW

P = sensitivity * 2^X
120 mW = 1.68 mW * 2^X
log(71.42) / log(2) = X = 6.15
Max dB SPL = 90 dB SPL + 3 dB SPL * X = 90 dB SPL + 3 dB SPL * 6.15 = 108.4 dB SPL

That should be sufficiently loud based on the voltage specification, but the amp may be current limited, so it depends on how much current the Geek Out's amp can put out.
So... does it live up to the hype?
Edited by pearljam50000 - 3/26/14 at 11:27am
Quote:
Originally Posted by pearljam50000

So... does it live up to the hype?
I think we'll have to wait for more units to get shipped out. I'm eager to compare it to the ODAC and O2 since those are my references for performance/price. Hopefully the Geek 1000 don't get as warm as the Schiit products...those are a bit too warm for my liking. Bah, I keep wanting to call it the Super Duper Geek Out since that was the original name in the campaign; it's so much easier to remember. >.>
Edited by miceblue - 3/26/14 at 11:39am

A few people on the lhlabs forums are saying they'll be taking delivery today, so we should have some more impressions in the next couple days I would imagine.

My GO 1000 just arrived. I'll be posting in the impressions thread after some quick listens.
Can the base Geek 450 drive the HD800's?
Thanks.
Quote:
Originally Posted by pearljam50000

Can the base Geek 450 drive the HD800's?
Thanks.
You can plug in numbers for the HD800 into the equations I posted 6 posts up. In short, yeah it looks like it based on what we know about the Geek Out 450. In reality though, we don't really know with the lack of impressions so far.
http://www.innerfidelity.com/images/SennheiserHD800.pdf
Edited by miceblue - 3/26/14 at 7:28pm
Quote:
Originally Posted by Supperconductor

My GO 1000 just arrived. I'll be posting in the impressions thread after some quick listens.

My F5 key is getting a bit tired. :p I kid, take your time and enjoy the GO. Hope it's better than you were expecting.

Quote:
Originally Posted by pearljam50000

Can the base Geek 450 drive the HD800's?
Thanks.

It should.  I told Larry that I wanted to use both HD800 and IEMs and he said the 450 would be the best bet as long as I didn't expect to blast my music.  The Super would have more headroom, but anything above the base model is not recommended if you plan to use IEMs or very sensitive headphones.

Quote:
Originally Posted by FraGGleR

It should.  I told Larry that I wanted to use both HD800 and IEMs and he said the 450 would be the best bet as long as I didn't expect to blast my music.  The Super would have more headroom, but anything above the base model is not recommended if you plan to use IEMs or very sensitive headphones.

hey everybody!

Man I'm sick today - so I'll be in bed all-day I suspect, but wanted to share our review (me and Scot Hull at Part-Time Audiophile) of the Geek out 1000!

Hope you dig it!!

LH should put one sample to Headfonia, seriously interesting

I just ordered the 450 for 199 as I will only use iem's with it.  Aside from the amp I assume everything else and the sq should be the same?  I know that lh is behind in getting orders out any idea how long before they get caught up?

Hope you know they are spinning up a Geek Out 100 with lower power for IEMs soon.
Betas might go out in a couple weeks.

Larry just confirmed the list of beta testers for the GO 100 and I'm among them. Once I have the unit I'll be able to compare it side by side with a Dragonfly and my E12. To test I'm going to be using my 1964-Q primarily, but will also use my A151 and S2 to get a more solid feel about how the GO 100 does for IEMs. I've read that the 450 works well with IEM, but I wouldn't be surprised to find that the 100 is an even better match with sensitive models.

Edit: I'll report here what I can; within the requirements of any potential non-disclosure agreements, of course.

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