Review: ZERO 24 BIT/192KHz DAC/Headphone Amp/Pre-Amp
Nov 19, 2008 at 10:07 PM Post #7,906 of 9,388
Always best to avoid unnecessary conversions, less jitter.
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Nov 19, 2008 at 10:08 PM Post #7,907 of 9,388
Quote:

Originally Posted by AudioPhewl /img/forum/go_quote.gif
Hiya Scottie,

Paypal washed their hands of me instantly.
SNIP
Paypal and Lawrence are as useful as each other.

~Phewl.



man that sucks - sorry to hear it! As someone who just a few weeks ago had to deal with chargebacks - I know how much it sucks. Why is it that we have to wait months for the bank to fix something someone else screwed up? Oh well. Hope it works out.
 
Nov 19, 2008 at 10:10 PM Post #7,908 of 9,388
Quote:

Originally Posted by AudioPhewl /img/forum/go_quote.gif
djchaz - you posted the same question at 42 minutes past the hour, and 49 minutes past the hour. You need to give folks a chance to respond! Someone will chime in with their opinion over the course of the next few hours
smily_headphones1.gif
.

~Phewl



Sorry, man. When I tried to post my question it sent me to some advertisement page so I went back and posted it again. My bad.
 
Nov 20, 2008 at 1:06 AM Post #7,909 of 9,388
Quote:

Originally Posted by BigTony /img/forum/go_quote.gif
Poor contact is really going to compromise the signal. You need to get all the jacks tight fitting, how come they were so loose?


I have no idea
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I've only had the Zero for about a month and yesterday was the first time I had to use the RCA jacks. Come to think of it, the optical jack is a bit loose as well.
 
Nov 20, 2008 at 1:07 AM Post #7,910 of 9,388
Quote:

Originally Posted by shampoosuicide /img/forum/go_quote.gif
I just acquired a used DV332 with Ulyanovsk 6S19P-V and Mullard M8110 tubes to pair with my HD595. The bass seems to be (unusually) too pronounced and overpowering, and sounds very muddy, as if the higher frequencies have been lost. It sounds a lot like the Zero before I snipped off the caps at the headamp section and RCA jacks. Malos, who had the 332+595 combo said he did not have the impression, and I haven't heard complaints like this from 650 owners.

Could this be due to the iffy RCA jack on my Zero? The RCA cables fit very loosely (as in the holes of the RCA jack seem a little too large), and I had to use a lot of blutack and do a lot of adjustment before I could get a signal.



Anyone else can chime in on this?

Because I'm seriously considering selling the DV332, but if the problem lies with the Zero, then I'll send it back to get fixed.
 
Nov 20, 2008 at 1:20 AM Post #7,911 of 9,388
Quote:

Originally Posted by ScottieB /img/forum/go_quote.gif
man that sucks - sorry to hear it! As someone who just a few weeks ago had to deal with chargebacks - I know how much it sucks. Why is it that we have to wait months for the bank to fix something someone else screwed up? Oh well. Hope it works out.


It's just a PITA, to be honest. Still, it's not been a wasted effort. I've got all my cash back now, and the transformer has been mailed out to a fellow chap in the UK who received a Zero with a buzzing transformer. Figured the least I could do was make good where possible on Lawrence's failed customer service
wink.gif
.

Thought I'd do alright out of the deal. Told him to bung me £5 to cover the cost of post and packing, and leave me with enough for a beer. Bought a new reel of packing tape for a pound, spent 30 minutes stripping the Zero down to get the transformer out without snipping any of the wires(have to remove both front and rear plates to get at the sockets and power switches). Went to the Post Office today to mail it to him... £4.30! After buying the tape, I'm currently running at a loss!
smily_headphones1.gif


Still, I get to sleep easier at night, knowing I've done something good today
smily_headphones1.gif
.

~Phewl
 
Nov 20, 2008 at 1:22 AM Post #7,912 of 9,388
Quote:

Originally Posted by djchaz /img/forum/go_quote.gif
Sorry, man. When I tried to post my question it sent me to some advertisement page so I went back and posted it again. My bad.


No problem mate. Just thought I'd say something rather than have a new member wonder why nobody was talking to him
smily_headphones1.gif
.

~Phewl.
 
Nov 20, 2008 at 2:32 AM Post #7,913 of 9,388
I was enjoying my FrankenZero as usual with my new HA-RX900 cans until suddenly it just sort of, died. There were no snap crackle pops in the case or the cans. Just suddenly went silent. The lights inside the case and the front (with buttons and all) still works but no sound comes out. Definitely not my headphones; there's several other sources such as my soundcard for that. Also for additional note, the FrankenZero mod was done about 2-3 weeks ago.

This happened during when I was listening. The first thing I did was just give it some small whacks and apparently when that didn't fix it, I went on to do some surgery on my Zero for any bad joints (I'll admit I used a terrible 25W soldering iron. It literally had no tip, just a 1cm diameter cylinder thing.). I've also checked to see if any there were any possible wirings that could touch other wires. Finding none, I just closed it up and ran Zero.

I still got the same outcome, no sound. At this stage, I have no idea what can be wrong with my Zero. I'll be posting pics later when I can find the time.

Also is it normal if the power supply (huge circle thing I believe) feels about the same as room temperature? All my other components seems to run hotter then the power supply. I can hear some hum coming from the FrankenZero when volume is way up with headphones but when music is played, none of that instruments I long for comes out.

Edit: Don't know how to do those little thumbnail picture things and since there's quite a lot of pictures taken, I've decided to take the liberty of uploading them through Mediafire. 16 total.

http://www.mediafire.com/download.php?oj1mwqmn4jn
 
Nov 20, 2008 at 4:39 AM Post #7,914 of 9,388
Im thinking of buying a Zero, I noticed there's a pre-moded one on ebay with HDAM, LT1364 and Upgraded volume pot, is this the best Zero combination? and this one is sold by Lawrence which i've heard has been dropping the ball lately, there's also another version sold, it looks like a stock Zero with OPA627's installed in the headphone amp, sold by wcz guy.. which one of these would be best.
 
Nov 20, 2008 at 5:12 AM Post #7,915 of 9,388
Quote:

Originally Posted by MikeW /img/forum/go_quote.gif
Im thinking of buying a Zero, I noticed there's a pre-moded one on ebay with HDAM, LT1364 and Upgraded volume pot, is this the best Zero combination? and this one is sold by Lawrence which i've heard has been dropping the ball lately, there's also another version sold, it looks like a stock Zero with OPA627's installed in the headphone amp, sold by wcz guy.. which one of these would be best.


Zero wise, offcourse the one that lawrence sells, seller wise wsz0304 is a far better seller as far as service goes, and may would agree in this forum.
 
Nov 20, 2008 at 8:31 AM Post #7,916 of 9,388
with the UBS--> optical converter will it still be able to put out 24bit/192? the zero doesn't have a usb connection on its own right?

lastly, is there any way to bypass the preamp?
 
Nov 20, 2008 at 8:57 AM Post #7,917 of 9,388
Quote:

Originally Posted by athenaesword /img/forum/go_quote.gif
with the UBS--> optical converter will it still be able to put out 24bit/192? the zero doesn't have a usb connection on its own right?

lastly, is there any way to bypass the preamp?




Hello there, athenasword, as far as I know the USB/optical converter - which I also have - works just fine with 24/192 and actually gives quite brilliant results even with high modded gear like the FrankenZero, that a few of us have.
Yes, the pre-amp is easily bypassed by pushing the button labeled "Preamp" until the green light goes off, then the signal is routed straight out of the DAC, bypassing both the amp and the volume control.
Cheers, S-Man
smily_headphones1.gif
 
Nov 20, 2008 at 9:44 AM Post #7,919 of 9,388
Quote:

Originally Posted by sennsay /img/forum/go_quote.gif
Hello there, athenasword, as far as I know the USB/optical converter - which I also have - works just fine with 24/192 and actually gives quite brilliant results even with high modded gear like the FrankenZero, that a few of us have.
Yes, the pre-amp is easily bypassed by pushing the button labeled "Preamp" until the green light goes off, then the signal is routed straight out of the DAC, bypassing both the amp and the volume control.
Cheers, S-Man
smily_headphones1.gif



that's exactly what i need man, thanks!! I was under the impression that USB is limited to 16bit/48kHz

i've seen a couple of these frankenzeroes online, how much more do they cost compared to the standard zeroes? and do they make any improvements to the DAC or issit in the amp section? i'm planning on purchasing a DAC for a set of active monitors
 
Nov 20, 2008 at 11:23 AM Post #7,920 of 9,388
Quote:

Originally Posted by athenaesword /img/forum/go_quote.gif
that's exactly what i need man, thanks!! I was under the impression that USB is limited to 16bit/48kHz

i've seen a couple of these frankenzeroes online, how much more do they cost compared to the standard zeroes? and do they make any improvements to the DAC or issit in the amp section? i'm planning on purchasing a DAC for a set of active monitors



Actually little over 50 bucks and you can have your Zero Frankenstined, I heard it makes hell of a difference, so much that some folks after mods have given up the idea of getting a dedicated headphone amp. You can PM - Pricklely Peete (Guru on Zeros), I believe he still has a few sets of caps etc, you will need for the mod.. I am trying to get one set down for myself too..
 

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