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O2 AMP + ODAC - Page 220

post #3286 of 3567
Thanks a lot guys. I'm sure the 1x setting is fine for my ath a900x, I just want my second gain to be as flexible and future proof as possible. I might upgrade to some Sennheiser 300 ohm headphones in the future or something else, I'm not sure. In short I'm worried that 5x is overkill and i should change it to 2.5-3.
post #3287 of 3567
I have gains of 1x/3x and 3x is more than enough for my 300 Ohm 650's.
post #3288 of 3567
Quote:
Originally Posted by Medaud View Post
 

Hey guys, I'm thinking of pulling the trigger on the Epiphany Acoustics EHP-O2Di, but I'm wondering about the gain. It comes with 1x/5x, but I've read people suggestion 1x/2.5x instead. Do you think 1x/5x would be fine? I'm using ATH-A900x.

 

Also that JDS custom engraving is awesome, how did you get them to do it?

 

Engraving: Click the Engrave button in the shopping cart. You can find more in this article: Custom Engraving Examples

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post #3289 of 3567

I just wanted to add my great experience with the O2+ODAC that I got from JDS. A couple weeks ago I ordered a custom unit with the power and RCA ports in the rear and a 1/4" port in front. 59 minutes after placing the order I received a shipment notification with a tracking number, and almost exactly 48 hours later it made its way from IL to my desk in Honolulu. Super impressed!

 

I have my HE-500s plugged into them, and although they're still burning in I'm really happy (after changing the stock pads) with how clean and neutral the sound is through the O2+ODAC. About a week after I got the unit I picked up a pair of KRK Rokit5s and plugged them into the ODAC and had an awful static/hum from the speakers which hadn't been present in the previous owner's setup (I confirmed firsthand before purchasing). Naturally, I contacted JDS and received an immediate and personalized response, which was far more pleasant and informative than I expected or can even recall experiencing from pretty much any customer service in any industry.

 

After a bit of troubleshooting it was pretty clear that it was an issue with ground loop noise which apparently isn't uncommon with the Rokits. With both the RCA and USB cables plugged in simultaneously the hum was present, but would go away with either one disconnected. JDS recommended a ground loop isolator which I just received yesterday, and it perfectly solved the issue.

 

Really can't recommend them enough, it was well worth the little extra bit to customize the O2+ODAC how I wanted, and I have total peace of mind that they'll take care of me if any issues come up. They even offered to send me another ODAC to test out to see if by some chance mine was faulty. These guys clearly know how to take care of their customers, and I hope they're successful enough to see them around for a long time!

post #3290 of 3567

That IS good service...

 

Thx for taking the time to type out the whole story for the rest of us ;)

post #3291 of 3567

I've read that the 3.5mm socket is only rated for 2000 insertions. I think I'll buy a short extension cable to prolong its life, would a cheap extension cable such as this be fine, audio quality wise?


Edited by Medaud - 8/9/14 at 8:30am
post #3292 of 3567

yes

post #3293 of 3567

Thank you good sir. :)

post #3294 of 3567

I use them all the time..... on two O2's.

 

Alex

post #3295 of 3567

The extension cables? EDIT: The reason I ask is that there are a lot of people talking about expensive cables and the difference they make. You can get some pretty expensive 3.5mm extensions on amazon. Makes you a bit worried about the dirt cheap chinese ones on ebay...but then again other people say it doesn't make any audible difference.


Edited by Medaud - 8/9/14 at 9:13am
post #3296 of 3567

Cables have been debated over and over and over and over.... lots of emotion etch.

 

You won't have any degradation with most cables that are well made.

 

That said id you buy exoensive cable they will work well too, but IMO not really make any real world difference in this case with a small 6" dongle etc.

 

I have several 3.5 mm dongle from various vendors, some are well made some are not, mechanically, but sonically they work.

 

You can buy one from amazon etch for a low cost and test yourself.

 

All the best

Alex

post #3297 of 3567

As far as I am concerned, buying a replacement 3.5mm jack and replacing the old one via soldering is an option that many seem to ignore.

post #3298 of 3567

Exactly, its a $1 problem. http://ie.mouser.com/Search/Refine.aspx?Keyword=STX-3120-5B

 

Its rated for 5000 mating cycles, so if you unplug it every day it will last ~13 years, and come to think of it anytime i have had to replace headphone sockets the amp was at least 10 years old.


Edited by mcandmar - 8/10/14 at 10:08am
post #3299 of 3567
Quote:
Originally Posted by Poimandres View Post

How does that even apply?  What is bizarre is your interest in this and your candor, it would be nice if you would stop trolling.  However as taxed as our country is it is certainly not as taxed as you brits or the rest of Europe.

 

The bizarre part from a non-US point of view is that you don't pay sales tax by ordering out-of-state (although it seems that in most cases you should declare every item bought out-of-state in your home state and pay a so-called use tax).

 

In most other countries sales tax or equivalent are levied by the federal government and thus are the same everywhere and can't be avoided unless buying sth. internationally and then you pay duties plus tax at customs.

 

Joachim

post #3300 of 3567
Quote:
Originally Posted by jring View Post
 

 

The bizarre part from a non-US point of view is that you don't pay sales tax by ordering out-of-state (although it seems that in most cases you should declare every item bought out-of-state in your home state and pay a so-called use tax).

 

In most other countries sales tax or equivalent are levied by the federal government and thus are the same everywhere and can't be avoided unless buying sth. internationally and then you pay duties plus tax at customs.

 

Joachim

I do believe that in most US states you're supposed to self-declare and pay the use tax.  But rates are relatively low, I recall something like 7% when I was living in TX years ago.  Compare that with rates (for essentials like bread) of average 6% in the EU and about 21% for anything else, there are small variation between countries though but the bounds are set on an EU level.  And it's levied automatically by the seller if you're a private person purchasing, the entire system is coordinated between member states of the EU.  

 

Don't even get me started on income tax...in Belgium the highest slab (quite easy to fall under it, btw) is currently 50% and that's AFTER the deductions for social security.  But then we get back a lot via almost free healthcare and university education.

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