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

Make some noise...bug them to death!! 

 

[jbr1971]

  Make some noise...bug them to death!! 

 
In cyberspace no one can hear you scream...

 

[pbear]

   
In cyberspace no one can hear you scream...

 
Well, I'm screaming now in response to the Indiegogo update sent today about the HPA. I'm waiting on both an HPA SS and an HPA Tube, originally perked in February 2015, so at least it was good to finally hear something about them after more than 3 months since the last update.
 
Here's the problem: Larry announced that the HPA is now going to require a 15V supply, but LH Labs previously told LPS owners to upgrade to the LPS4 in order to drive both the Pulse Infinity and the HPA. Now I'm stuck with two LPS4 boxes, having paid $170 each to get 3 additional 12V outputs that are now totally useless.
 
I already submitted a ticket complaining about this and asking what they plan to do to fix the mess this decision creates. Converting some of the outputs of the yet-to-be-released LPS8 does absolutely nothing for existing LPS4 owners.

 

[spyder1]

   
Well, I'm screaming now in response to the Indiegogo update sent today about the HPA. I'm waiting on both an HPA SS and an HPA Tube, originally perked in February 2015, so at least it was good to finally hear something about them after more than 3 months since the last update.
 
Here's the problem: Larry announced that the HPA is now going to require a 15V supply, but LH Labs previously told LPS owners to upgrade to the LPS4 in order to drive both the Pulse Infinity and the HPA. Now I'm stuck with two LPS4 boxes, having paid $170 each to get 3 additional 12V outputs that are now totally useless.
 
I already submitted a ticket complaining about this and asking what they plan to do to fix the mess this decision creates. Converting some of the outputs of the yet-to-be-released LPS8 does absolutely nothing for existing LPS4 owners.

​They sold us LPS4's, with he promise of completing a Pulse based music system. Then they change the design parameters (Voltage Requirement)of the HPA Tube. Is there anything we can do about it?

 

[doublea71]

Wow, they're just openly bending over their backers at this point. Sorry for the bad news.

 

[uncola]

Sometimes amps can use any PSU within a voltage range like I know the uptone audio regen uses 7 to 12v or something like that. Si maybe the lh labs headphone amp will work with 12 OR 15 volts?

 

[Shawnb]

Also, since LPS8 backer will have 8 routes of 12V output originally. We will upgrade two of these 8 to become 15V. And I got few requests to lower one of its output to 7 ~ 9V in order to power up the other devices. We will try to put this consideration too. Once it is confirmed 100% doable, will make a quick update as well
 
What does this part mean? Does this mean the LPS8 doesn't work for the Pulse, Source or PTP?
I'm getting so tired of these confusing updates that only lead to more questions and frustration

 

[oneguy]

It means LPS8 will have 2 x 15v outputs, 6 x 12v outputs and there is a chance on converting one ov those 12v outputs to a 7-9v output. I think the HPA is the only item that they have explicitly stated as going to 15v.

 

[oneguy]

​They sold us LPS4's, with he promise of completing a Pulse based music system. Then they change the design parameters (Voltage Requirement)of the HPA Tube. Is there anything we can do about it?

This whole situation is f'ed up. I submitted a trouble ticket about this too. I think they should allow HPA backers with LPS4s to upgrade to the LPS4 in 2.0 chassis with the 15v tap for HPA.

 

[Benny-x]

Interestingly, more often than not, if I do not turn the pulse off, all is good. I know some say to never do this, but I go some long periods between using the Pulse. I just can't justify leaving it running all of the time.

BTW I use several other USB DACs with no issues using the same cables and ports on the same machines.

Firstly, this thing is a bit flaky and doesn't work as well as other USB DACs I've had. I think that's a common understanding across the Pulse threads.

On your long duration, though, I often go 2-4 weeks without using my Pulse, but I leave it on and connected all the time. The parts inside aren't going to wear out in its lifetime and thermal stability is good, so why not? Leaving the AC for a couple hours uses more power.

 

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

I have too have an HPA Tube in line with a LPS4 (of like the rest of you the same reason I opted right now...bought some tubes also for some rolling in the future) and fuming  

 .
 
At least have an IGG exclusive 12V HPA before they hit retail. There they could have their 15v.
 
Or why create LPS4 in the first place and not back it up...

 

[spyder1]

I look forward to the arrival of the HPA Tube, and Tube Pre-Amp. Rolling the ACX modules, and vacuum tubes should be fun!

 

[Yviena]

If anyone needs a sub 1uv noise lps the long dog audio one is a good choice,the actual noise is 250nv and the 1.25a version is only around £235 excluding shipping.

 

[mandrake50]

 

Interestingly, more often than not, if I do not turn the pulse off, all is good. I know some say to never do this, but I go some long periods between using the Pulse. I just can't justify leaving it running all of the time.

BTW I use several other USB DACs with no issues using the same cables and ports on the same machines.

Firstly, this thing is a bit flaky and doesn't work as well as other USB DACs I've had. I think that's a common understanding across the Pulse threads.

On your long duration, though, I often go 2-4 weeks without using my Pulse, but I leave it on and connected all the time. The parts inside aren't going to wear out in its lifetime and thermal stability is good, so why not? Leaving the AC for a couple hours uses more power.

I consider it to be quite wasteful .. for energy use, and ageing of the electronics (heat kills micro devices.. check test data).
 
I can't understand why ..given adequate driver compatibility, it should not be able to be turned off and restarted ..and still talk to the source.
In any case, I do not think that what you do has anything at all to do with my situation and my expectations. Not to be harsh, that is what is.
 
If it can't do this, fine, I get rid of it. But it really should be able to, as large numbers of other DACs, some lots less expensive accomplish this regularly.
 
IOW, no excuses. It sucks!
 
The common wisdom (often not at all accurate) was that it needed to be left on to stabilize the clocks... and supposedly sound "better" . Doubtful at best.
There is no reason to require it be left on just so I can connect it to my source... None! If the thing is designed correctly and has working drivers, that is.

 

[germay0653]

 
I consider it to be quite wasteful .. for energy use, and ageing of the electronics (heat kills micro devices.. check test data).
 
I can't understand why ..given adequate driver compatibility, it should not be able to be turned off and restarted ..and still talk to the source.
In any case, I do not think that what you do has anything at all to do with my situation and my expectations. Not to be harsh, that is what is.
 
If it can't do this, fine, I get rid of it. But it really should be able to, as large numbers of other DACs, some lots less expensive accomplish this regularly.
 
IOW, no excuses. It sucks!
 
The common wisdom (often not at all accurate) was that it needed to be left on to stabilize the clocks... and supposedly sound "better" . Doubtful at best.
There is no reason to require it be left on just so I can connect it to my source... None! If the thing is designed correctly and has working drivers, that is.

"The common wisdom (often not at all accurate) was that it needed to be left on to stabilize the clocks... and supposedly sound "better" . Doubtful at best." 
 
Really?  Clocks are crystal structures that oscillate/vibrate at their target/designed frequencies only when brought to the proper temperature. It's called stabilization for a reason. If the temperature is to low or to high the crystal will not vibrate at the proper frequency and timing may be off as a result.  It's not just common wisdom and is accurate, it's the law of physics that can be tested and repeated!