Geek Pulse: Geek desktop DAC/AMP by Light Harmonics

[ejong7]

I guess a better way of phrasing my question is whether theres a majority within the amps produced today to be compatible with the LPS/LPS4.

 

[jaywillin]

pls help to review and not by PM-ing Gavin

lol, pm-ing gavin isn't the best way to get the word out ??  (i'm just being a smart a** 

)
 
seriously though, i don't participate too much on the lhlabs forum, i find it hard to follow
i've had some interaction here with casey,and he's been very helpful, and i think he's doing a great job with a difficult job(i've been there)
and i'll pass along some feedback to him
but who i really want to give my impressions to are of all of us here on head-fi who've been waiting so long here(some patiently, others not so)
i don't really do "reviews" , my thoughts on gear are more like short running commentaries , i like to keep it short and sweet, to the point
good, bad, "why" i think so, sound is kinda hard for me to describe , but rest assured, i'll give it the old college try !

 

[snip3r77]

lol, pm-ing gavin isn't the best way to get the word out ??  (i'm just being a smart a** :evil: )

seriously though, i don't participate too much on the lhlabs forum, i find it hard to follow
i've had some interaction here with casey,and he's been very helpful, and i think he's doing a great job with a difficult job(i've been there)
and i'll pass along some feedback to him
but who i really want to give my impressions to are of all of us here on head-fi who've been waiting so long here(some patiently, others not so)
i don't really do "reviews" , my thoughts on gear are more like short running commentaries , i like to keep it short and sweet, to the point
good, bad, "why" i think so, sound is kinda hard for me to describe , but rest assured, i'll give it the old college try !

just wondering what DAC and headphone that you're using?

 

[eac3]

I would open a ticket just in case. I understand you not wanting to burden them by adding an extra ticket and giving them extra time to correct it. But if you do get an Xfi by mistake, you HAVE to pay for shipping it back unless you are in the US. Its standard practice in the audio industry.

Thanks for clarifying those two points.

 

[AxelCloris]

  I guess a better way of phrasing my question is whether theres a majority within the amps produced today to be compatible with the LPS/LPS4.

 
It depends on each individual amp, honestly. In most cases you'll find that the LPS cannot be used to power products other than those from LH Labs. There are exceptions, of course, but even the ones that take 12V 1.2A power may use a different connector for the power cable. For example my Violectric V181 has a different power requirement and power cable entirely; it cannot receive power from my LPS4.
 
The amps that will receive power from the LPS4 are in the minority.
 

 
but who i really want to give my impressions to are of all of us here on head-fi who've been waiting so long here (some patiently, others not so) i don't really do "reviews" , my thoughts on gear are more like short running commentaries , i like to keep it short and sweet, to the point good, bad, "why" i think so, sound is kinda hard for me to describe, but rest assured, i'll give it the old college try!

My prediction: you're going to like what you hear. But of course, 

.

 

[germay0653]

question...

how many logins are required for 1 lhlabs website.

1. forums
2. tracking
3. support ( open trouble ticket )

Hopefully. they can implement a single sign-on solution.  All it would take is to setup and Active Directory structure, at least on Windoze that is.  Not sure if their servers are MAC.

 

[Phishin Phool]

 
Hopefully. they can implement a single sign-on solution.  All it would take is to setup and Active Directory structure, at least on Windoze that is.  Not sure if their servers are MAC.

If you want a single log-in / password then you need to pledge $32 for the "Consolidation Perk".

 

[nicolo]

It's not $32. Its $31!!

 

[Boban85]

  It's not $32. Its $31!!

Please check your latest e-mails, the $31 was only for the first batch! 

 

[bitsnbytes]

LH uploaded a video on their YouTube page in case you guys didn't see it.


It's interesting to hear Larry talk about the design process of things, but if you just want to jump right into the relevant information for the Pulse, skip to 8:40.

 
 
When Larry says to set your DAC to -3db, or -6db, or -9db, etc (around 9:30 into the video)...
 
Can someone explain the logic to the 3, 6, 9, 12, etc if earlier he was talking about data divided by two?

 

[AxelCloris]

 
When Larry says to set your DAC to -3db, or -6db, or -9db, etc (around 9:30 into the video)...
 
Can someone explain the logic to the 3, 6, 9, 12, etc if earlier he was talking about data divided by two?

 
In short, every +/-3dB is a doubling or halving the intensity. When you halve or double the intensity you're still maintaining the best possible ratio. All measurements are relative to -0dB, so the -3, -6, -9 etc are what you should be using.
 
If you're actually interested in learning specifics there are a lot of good resources online. This is a great place to start. If you want more detailed calculations and breakdowns I'd recommend checking out this page as well. The website layout is pretty crap but the information is good.
 
And an important note, I've heard people claim that bumping up 3dB doubles the loudness. This is not true. I had an audio instructor in college make such a claim. A few of my classmates and I immediately changed instructors because he clearly wasn't providing us with accurate information.

 

[bitsnbytes]

Thanks!

I was thinking doubling/halving would be 1-2-4-8 and vice versa

 

[Chrome Robot]

Thanks!

I was thinking doubling/halving would be 1-2-4-8 and vice versa

The decibel system is logarithmic, so lowering by 3 is approximately halving.

 

[Chrome Robot]

thanks, i've been here for three years, i'm from georgia, and i'm still adjusting

i should be listening to my xfi/lps4 this time tomorrow

Great news on your Xfi. Hoping mine arrives soon too.

I am from Georgia as well. Both parents from small Alabama towns.
Now live in Shanghai and Berkeley.

 

[jaywillin]

just wondering what DAC and headphone that you're using?

the gear in my signature is current, i'm really enjoying this current line-up
 
i have the t1, the rs1i, LD mkiii, and a modi 2u