How-To Improve my Setup with Geek Pulse, The High-Definition DAC and Headphone Amplifier - AVS Forum
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post #1 of 8 Old 10-29-2013, 12:42 AM - Thread Starter
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I am not entirely sure this is the correct forum for DACs, but I thought I would give it a try.

Light Harmonic introduced the Geek Out a couple months ago. It was a high definition portal USB DAC aimed at Laptop users. The specs on it were quite impressive.

They have taken many of the suggestions from the Geek Out campaign, and are creating a Desktop version called the 'Geek Pulse' (http://igg.me/at/geekpulseaudio/x/5192321)

Here are the current specs (if this campaign is like the previous one, they will improve before the end):

Technology Breakdown

Digital Inputs USB 2.0
Toslink
SPDIF 1 - RCA
SPDIF 2 - RCA
Analog Outputs Line Out: Single-ended, gold plated RCA
Output Impedance: 47 Ohm
Output Voltage: 4Vrms fixed

Headphone: 1/4" stereo jack
Output Impedance: 0.47 Ohm
Output Voltage: 7Vrms max variable

Volume Control Buttons on front panel plus operating system control.

Volume attenuation information from operating system sends data to Geek Pulse, which then implements the volume control internally.
Native PCM Decoding 44.1, 48, 88.2, 96, 176.4, 192, 352.8, & 384 kHz / 16, 24, 32 bit
Native DSD Decoding 2.822, 3.072, 5.644, 6.144 MHz / 1 bit
Analog Output Stage Pure Class A Line Level Out
THD+N better than 0.005%
SNR 110dB (unweighted)
115dB (A-weighted)
Jitter Removal Technology Patent Pending: 3L buffer by Light Harmonic
Dual loop re-clock for all digital audio inputs


I have a Dennon 3808ci (and other equipment you can see in my signature). I am trying to determine how to best improve my audio performance with my setup using the Geek Out. I would love to hear your thoughts!

Sean Hull

Denon 3808ci | PS3 80Gb | Harmony One | Toshiba XA2 | Samsung 61" PN60E6500EF | HTPC with HDMI

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post #2 of 8 Old 10-30-2013, 12:55 AM - Thread Starter
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I thought for sure someone here has experience with DACs and would be able to provide some insight.

Sean Hull

Denon 3808ci | PS3 80Gb | Harmony One | Toshiba XA2 | Samsung 61" PN60E6500EF | HTPC with HDMI

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post #3 of 8 Old 10-30-2013, 01:34 AM
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Use the DAC in your avr and return the geeky thing and spend it on something more useful?
67jason likes this.

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post #4 of 8 Old 10-30-2013, 03:32 AM - Thread Starter
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Quote:
Originally Posted by lovinthehd View Post

Use the DAC in your avr and return the geeky thing and spend it on something more useful?

Not quite what I was hoping for, but I appreciate the response.

Sean Hull

Denon 3808ci | PS3 80Gb | Harmony One | Toshiba XA2 | Samsung 61" PN60E6500EF | HTPC with HDMI

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post #5 of 8 Old 10-30-2013, 10:57 AM
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You might try the 2-channel forum, lots of outboard dac fans there it seems. Maybe the HTPC forum, too.

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post #6 of 8 Old 10-30-2013, 11:14 AM
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The specs of today's "standard" DACs are quite good and any miniscule differences mentioned are beyond audibility by scientific measures.
Thus you won't find many hopping on this waggon because this points more in the "Voodoo" direction.
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post #7 of 8 Old 10-30-2013, 03:01 PM - Thread Starter
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Thank you both, I'll check out the 2 channel and HTPC forums.

Sean Hull

Denon 3808ci | PS3 80Gb | Harmony One | Toshiba XA2 | Samsung 61" PN60E6500EF | HTPC with HDMI

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post #8 of 8 Old 10-31-2013, 12:09 AM
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Check it out or spam it? I see this in your other thread you started, just doing "they bare minimum"....kinda like your marketing. $500 for a DAC for geeks is an understatement, more like suckers. LOL!

Light Harmonic Labs, the geniuses behind the Da Vinci DAC have created a desktop version. While it is not quite as powerful as the Da Vinci DAC, it will be the best desktop DACs available.
The Geek Pulse will retail for $499, and save 50% now!

They have created a project on IndieGoGo for it. http://igg.me/at/geekpulseaudio/x/5192321

Here are some of the higlights:

LH Labs is a team of audio geeks in Sacramento, CA. We manufacture very high-end audio equipment that is sold, mostly, to audiophiles. We are known in our industry as the engineers and builders of one of the best digital to analog converters in the world, called Da Vinci Dual DAC.

And so, let us introduce you to Geek Pulse!

Many people don't know this, but our human ears can't actually hear digital audio. Digital data has to be converted into analog before we can hear it. To do this, we use digital-to-analog converters, or DACs. They're everywhere: in our phones, in our cable boxes, in our computers. Seriously. They're everywhere. The problem with the DACs that we find in all of our devices is simple— they suck! For the most part, they weren't made to handle high-resolution digital data. They just do they bare minimum.

Geek Pulse has an audiophile-grade DAC inside. Check the tech specs below to see the details. But for now, let's just say that it's bad to the bone. It has four inputs on it so you can connect your computer, your CD player, your Blu-ray player, your Sonos, almost any digital player to it! "More digital inputs" was the most frequently requested feature from our previous campaign.

Geek Pulse is a high-definition DAC and headphone amplifier.

Beyond being a rad DAC, Geek Pulse has two ways to get music out of it. First, there's a pair of RCA connectors on the back (also a frequently-requested feature from our Geek Out campaign) so you can connect it to your stereo or a pair of computer speakers. Choose really good ones, okay?

Second, it has an amazing headphone amplifier inside that is accessed by a 1/4" headphone jack on the front. Again, this is audiophile approved stuff and it is powerful. It'll push 3,000 milliwatts into a pair of headphones. That's enough power to drive any pair of headphones that we know of. You asked for it; we're delivering. Check the tech specs down below for more details.


Technology Breakdown

Digital Inputs USB 2.0
Toslink
SPDIF 1 - RCA
SPDIF 2 - RCA
Analog Outputs Line Out: Single-ended, gold plated RCA
Output Impedance: 47 Ohm
Output Voltage: 4Vrms fixed

Headphone: 1/4" stereo jack
Output Impedance: 0.47 Ohm
Output Voltage: 7Vrms max variable

Volume Control Buttons on front panel plus operating system control.

Volume attenuation information from operating system sends data to Geek Pulse, which then implements the volume control internally.
Native PCM Decoding 44.1, 48, 88.2, 96, 176.4, 192, 352.8, & 384 kHz / 16, 24, 32 bit
Native DSD Decoding 2.822, 3.072, 5.644, 6.144 MHz / 1 bit
Analog Output Stage Pure Class A Line Level Out
THD+N better than 0.005%
SNR 110dB (unweighted)
115dB (A-weighted)
Jitter Removal Technology Patent Pending: 3L buffer by Light Harmonic
Dual loop re-clock for all digital audio inputs

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