Geek Pulse: Geek desktop DAC/AMP by Light Harmonics

[Larry Ho]

Just roughly check the vote here... From the beginning to the end of this campaign, we confirm 7 out of the votes here.
Also, in lhlabs.com, we confirm quite a lot of requests too.
 
One reviewer call Geek Pulse: People's DAC.   That is really lovely.

 

[miceblue]

And here is my latest version from the Geek Force forum: 

The space under the V looks a bit bare. Maybe the input indicators can be moved there? Otherwise I like the volume knob LEDs except there was debate as to whether there should be 9 LEDs.
0 dBFS (all 9 lights on)
-12 dBFS (8 lights on)
-24 dBFS (7 lights on)
-36 dBFS (6 lights on)
-48 dBFS (5 lights on)
-60 dBFS (4 lights on)
-72 dBFS (3 lights on)
-84 dBFS (2 lights on)
-96 dBFS (1 light on)
Mute (no lights)

Unless one of the lights turns red/orange/rainbow, such as the last one when becoming muted.

 

[AxelCloris]

  Just roughly check the vote here... From the beginning to the end of this campaign, we confirm 7 out of the votes here.
Also, in lhlabs.com, we confirm quite a lot of requests too.
 
One reviewer call Geek Pulse: People's DAC.   That is really lovely.

 
If there's an official vote we'll be sure to take part! I imagine it would be sent out in the survey or sometime thereafter.

 

[CanDude]

  Just roughly check the vote here... From the beginning to the end of this campaign, we confirm 7 out of the votes here.
Also, in lhlabs.com, we confirm quite a lot of requests too.
 
One reviewer call Geek Pulse: People's DAC.   That is really lovely.

 
How do you intend to change the gain setting? Not a switch at the back, please...
 
"People's DAC", hmm, should be good for China...

 

[nicolo]

  Just roughly check the vote here... From the beginning to the end of this campaign, we confirm 7 out of the votes here.
Also, in lhlabs.com, we confirm quite a lot of requests too.
 
One reviewer call Geek Pulse: People's DAC.   That is really lovely.

 
Hi Larry,
 
Is there a problem with the lhlabs site. Cannot access it at all.

 

[miceblue]

I was going to post exactly that.

 

[Zoo Animal]

 
One reviewer call Geek Pulse: People's DAC.   That is really lovely.

 
 
That was my thought too, it does everything at a very respectable price. 
It's like the design idea behind the original Beetle. Is there a better compliment than that?

 

[LucasB]

I like the symbols below the leds for input-selected! Great idea! Symbols for all inputs!
 
Quote:

Oh, almost forget, do you guys like 'Power On' indicator? Or 'Music On' indicator?

 
Yeah. I like indicators and separate switches! A 2-color LED for power-on is even greater to see between "standby" and "full" on, or "bad" and "good" power.
 
Music on means music detected on selected input channel? Yeah, have a decent led for that, to be able to track down bugs in a setup!
 
As mentioned earlier I would rather have a "bypass" led but now that I got the concept of the vol-knob I can live as well with all diods lit on the knob to know it bypasses sabres digital volume control. Maybe the last of the 8 or 9 diodes around the knob can have some writing like "0db - v direct" or something shorter. If we talk about high-res I think it is worth mentioning, that it gets through the dac with 1 step less processing (volume).
 
I like the idea to put all volume-functions in the volume-knob. Like volume mute, volume off/on, volume 3DA/stereo, volume high/low. But packing the input-source-select-switch there confuses me. Anybody any comments on that?

 

[m-i-c-k-e-y]

Happy New Year Guyz!

 

[germay0653]

Happy New Year Guyz!

Happy New Year to everyone!!
 
What's going on with the www.lhlabs.com site?  Are they updating/doing maintenace?

 

[uzi]

  Happy New Year to everyone!!
 
What's going on with the www.lhlabs.com site?  Are they updating/doing maintenace?

A couple of hours ago in the IGG comments, Larry said:
 
"Web hosting company of LHLabs.com has some issues. We are fixing it…
Happy New Year!"

 

[Anaximandros]

Well, I wish you all a happy new year. Full of joy and audiophile Nirvana

 

[germay0653]

  A couple of hours ago in the IGG comments, Larry said:
 
"Web hosting company of LHLabs.com has some issues. We are fixing it…
Happy New Year!"

Thanks uzi!

 

[miceblue]

I think I probably missed it somewhere, but will a gain adjustor be in the Pulse?

If not, I remember seeing people request an impedance switcher. Are these two features essentially the same in function?
Wait, scratch that. That was a stupid question. XD

Why would anyone want a different output impedance?

Well scratch that too:
http://www.head-fi.org/t/601669/impedance-adapters-cables-explained-listed/75#post_8409890

I've just confused myself now. >.>
Doofus December will get the last of me. XP

From what I understand, wouldn't an impedance switcher be cleaner than a gain switcher since an op-amp's higher gain also means the noise is being amplified?

Or maybe not...with the Geek Pulse's 3 W output at 16 Ω, that means the low-impedance headphone will be really loud in volume, no? If an impedance adaptor is used, increasing the amp's output impedance, the volume will be decreased but the magical 1:8 damping ratio would be broken.

 

[CanDude]

Happy New Year!