[NZtechfreak]

I'm using Sennheiser 558s and they seem to work great with the Geek Out 450. Would the Infinity then be the closest to the 450 then as far as performance/power goes?

Power, sure. Providing the volume control is adequate then no reason not to use the 1000mW output on the GOV2 though. I wouldn't bother with the Infinity myself.

 

[nbakid2000]

Power, sure. Providing the volume control is adequate then no reason not to use the 1000mW output on the GOV2 though. I wouldn't bother with the Infinity myself.

I just didn't want to overload my phones is all. Didn't know if the 1000mW would kill them or not --- upon research, I guess these things are rated at 50 ohms...I'm seeing another site paired these with an amp at 50 ohms at 1000mW...which I guess is fine then.

 

[NZtechfreak]

I just didn't want to overload my phones is all. Didn't know if the 1000mW would kill them or not --- upon research, I guess these things are rated at 50 ohms...I'm seeing another site paired these with an amp at 50 ohms at 1000mW...which I guess is fine then.

The sensitivity is much more important than the impedance, my HE6 is 50ohm for example, 1W won't get close to driving them!

 

[nbakid2000]

The sensitivity is much more important than the impedance, my HE6 is 50ohm for example, 1W won't get close to driving them!

 
OK, I was just curious. The 558s apparently have a sensitivity of 112dB. I use the Geek Out 450 and I can put my volume on my computer up to about 20 tops and it's a very healthy/driving volume. Usually it's in the 10-15 range, depending on what I'm listening to...any more is pushing my eardrums/the headphones to point of overload. I was just making sure that the 1000mW wouldn't blow me out at like 7 or whatever, since the GO 450 is rated at 450mW, I guess. That's why I was curious to know if I should get the Infinity since it has the 450mW rating and that rating/power works great right now with what I'm using. Sorry, I don't know a whole ton about how the various ratings/math effect everything. So the Infinity would still be a waste for what I'm doing? I won't be blown out with the 1000 mW?

 

[NZtechfreak]

112? That's pretty sensitive. You probably only need the 100mW power output for them.

 

[imackler]

I can be so dense. Can someone post photos of the cheapest balanced hd6** cable set up (with any connections) that would take advantage of the balanced line out?

 

[eliwankenobi]

I can be so dense. Can someone post photos of the cheapest balanced hd6** cable set up (with any connections) that would take advantage of the balanced line out?

I bought these: http://m.shenzhenaudio.com/z-zy-hifi-cable-upgrade-version-hd650-hd600-hd580-hd565-hd525-balance-line-4-pin-xlr-male-occ-zy-002-2-5m.html

And I reviewed them here: http://www.head-fi.org/t/747885/review-zy-cable-zy-002-balanced-cable-and-adapter-for-hd600

In my opinion they are excellent and very cost effective. The termination is 4 pin XLR, but Shenzen Audio has very good relation with the manufacturer and surely they can put whatever termination you desire for the same price as they did with my balanced to 1/8" adapter so I can use them with my GO450.

 

[uncola]

I got a cable from this seller in china.  I'm really happy with it.  you just tell him what length and connector you want.  in our case 3.5mm trrs 
http://www.aliexpress.com/store/product/1-5m-5FT-Hi-End-Litz-braid-8-Cores-5n-Pcocc-silver-plated-Headphone-Upgrade-Cable/900546_32374529459.html

 

[nbakid2000]

112? That's pretty sensitive. You probably only need the 100mW power output for them.

 
Again, I'm sorry to bug you, but you seem to know more about this than I do. The information I got is this:
 
Sennheiser HD 600/650 ---112 (voltage sensitivity) 300 (ohms) 107 (power sensitivity)
 
http://benchmarkmedia.com/blogs/news/14017381-headphone-impedance-and-sensitivity
 
If I got the normal V2, that would be fine and I wouldn't have to mess or worry about the 450mW setting that is found on the Infinity. Correct? I'd just use the 100mW jack on the V2? (I currently run the Sennheiser 558 but am looking to upgrade)
 
Currently I plug in my 558s into the 47 ohms jack on the Geek Out 450. This seems to be a bit more laid back and quieter than using the .47 ohms jack. Does this sound about right?

 

[NZtechfreak]

You can check power requirements places like http://www.digizoid.com/power.php - input your headphone specs and it'll let you know the power and current requirements for various listening volumes (you'll typically want to aim for enough power to hit transient peaks a bit higher than your average listening volumes so that those peaks can be reached without clipping). From those specs you should be fine, the 650 sensitivity is 103dBSPL/mW and it'll only need 50mW to hit 120dB peaks. There isn't a 100W jack in the V2, same jack and you switch output power with a button on the side of the device. It defaults to the 100mW setting between uses to prevent you blowing your ears out or damaging your headphones.

You should be using the 0.47ohm output for your 558, by the way. It sounds softer and more laid back with the 47ohm output because it's badly mismatched with the headphones 50ohm impedance. That causes wonky frequency responses in dynamic drivers like the 558, most often causing woolly bloated bass, that robs it of impact. As a general rule look for an output impedance less than 8 times the headphone impedance to prevent this (Note that this does not apply to planar magnetic drivers, which are not affected by the output impedance of the connected amp).

 

[nbakid2000]

You can check power requirements places like http://www.digizoid.com/power.php - input your headphone specs and it'll let you know the power and current requirements for various listening volumes (you'll typically want to aim for enough power to hit transient peaks a bit higher than your average listening volumes so that those peaks can be reached without clipping). From those specs you should be fine, the 650 sensitivity is 103dBSPL/mW and it'll only need 50mW to hit 120dB peaks. There isn't a 100W jack in the V2, same jack and you switch output power with a button on the side of the device. It defaults to the 100mW setting between uses to prevent you blowing your ears out or damaging your headphones.

You should be using the 0.47ohm output for your 558, by the way. It sounds softer and more laid back with the 47ohm output because it's badly mismatched with the headphones 50ohm impedance. That causes wonky frequently responses in dynamic drivers like the 558, most often causing woolly bloated bass, that robs it of impact. As a general rule look for an output impedance less than 8 times the headphone impedance to prevent this (Note that this does not apply to planar magnetic drivers, which are not affected by the output impedance of the connected amp).

 
So in plain exact terms (sorry, again) I can just go with the V2 normal edition, and use the 100mW setting for either my 558s or 600s (not really interested in the 650s), from the looks of it. ?
 
edit: also changed to the .47 jack on your recommendation. Thanks!

 

[ufospls2]

   
So in plain exact terms (sorry, again) I can just go with the V2 normal edition, and use the 100mW setting for either my 558s or 600s (not really interested in the 650s), from the looks of it. ?
 
edit: also changed to the .47 jack on your recommendation. Thanks!

You could use the 100mw or the 1000mw, it wouldn't do your headphones any harm, but the 100mw setting should give you sufficient volume. I would go with the V2 standard, normal edition

 

[nbakid2000]

  You could use the 100mw or the 1000mw, it wouldn't do your headphones any harm, but the 100mw setting should give you sufficient volume. I would go with the V2 standard, normal edition

Fantastic! Thanks!

 

[oneguy]

Again, I'm sorry to bug you, but you seem to know more about this than I do. The information I got is this:

Sennheiser HD 600/650 ---112 (voltage sensitivity) 300 (ohms) 107 (power sensitivity)

http://benchmarkmedia.com/blogs/news/14017381-headphone-impedance-and-sensitivity

If I got the normal V2, that would be fine and I wouldn't have to mess or worry about the 450mW setting that is found on the Infinity. Correct? I'd just use the 100mW jack on the V2? (I currently run the Sennheiser 558 but am looking to upgrade)

Currently I plug in my 558s into the 47 ohms jack on the Geek Out 450. This seems to be a bit more laid back and quieter than using the .47 ohms jack. Does this sound about right?

The v2 doesn't have different ports for different power outputs. One port is single ended and the other is balanced. Power output is changed through a button on the side. There is another button that toggles between FTM and FRM mode.

 

[NinjaHamster]

The v2 doesn't have different ports for different power outputs. One port is single ended and the other is balanced. Power output is changed through a button on the side. There is another button that toggles between FTM and FRM mode.

FTM or TCM? The standard v2 doesn't have Femto clocks.