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Toxic Cables Existing customer prize draw. HE-500 - EF-5 - Stand - Cable - Page 10

post #136 of 151
Quote:
Originally Posted by singleended58 View Post


And inter voice would enjoy more of the new gears besides what he owes now!

Thanks and I am sure I will enjoy the new gears. :bigsmile_face: :gs1000smile:

 

I will post my impression of the whole combination after burning in. Hope it will not take too long to deliver :wink_face:.


Edited by inter voice - 3/2/14 at 4:19am
post #137 of 151
Quote:
Originally Posted by hifimanrookie View Post
 


+1 congrats! u must be jumping up and down now :beerchug:

Yes, I am jumping and now "over the MOON" :biggrin:

post #138 of 151

Great contest Frank !!!

Congratulations to Inter Voice !!!!!!

 

:gs1000smile:

Lu

post #139 of 151

 im out now......Congratulations Inter voice Nice Prize!!!!!!!

post #140 of 151
Quote:
Originally Posted by maguire View Post
 

 im out now......Congratulations Inter voice Nice Prize!!!!!!!

Don't worry, you still have the chance as Frank will give surprises to customers frequently :wink:

post #141 of 151

Na....Not worried just a bit of fun....Frank's always giving something away....Enjoy your wonderful prize......We all winners in the end :D

post #142 of 151

congrats intervoice!!

i`ve had the he500, depths are really stunning ... if you`ll find them a bit clampy, just bend them a bit like shown in the manual.

what i would be interested in, how works the hd800 with ef-5??? please let us know your experiences ;)

and ahm, if you don´t need the headphone stand ;)))))

post #143 of 151
Quote:
Originally Posted by crumb View Post
 

congrats intervoice!!

i`ve had the he500, depths are really stunning ... if you`ll find them a bit clampy, just bend them a bit like shown in the manual.

what i would be interested in, how works the hd800 with ef-5??? please let us know your experiences ;)

and ahm, if you don´t need the headphone stand ;)))))

Thanks for the advice.  For the EF5 I will change the OP275 opamp with LME49860NA.  This should make the SQ more dynamic and clear and less warm.  I will check what brand is the 12AU7 tube as I know the latest one is made in China according to the maker.  I may change it to RCA (Grey Plate) 12AU7 tube where the SQ will suit me more.  If there is enough space I will connect a 0.22uF MKP capacitor across the +/- power pins of the opamp. This will make the SQ much more smooth.

 

I will post a full report on my impression after 100 hrs burning in.  I suspect the EF5 should work fine with HE-500 and my LCD-X as both have low impedance but I doubt it can drive the HD-800 as the impedance is high (300 ohm)  The power output of EF5 is 2W at 30 ohm and with 300 ohm headphone connected to it I don't think it has sufficient power to drive the HD-800 to its best performance.

post #144 of 151

aah, detailed plan .. we`ll be looking forward to your review :)

had rca clear top and amperex 12au7 - nice highs, but preferred Sylvania 6189W NOS/USA, very clear and deep bass - tight but weighty enough while available for a reasonable price ..

have fun with your new gear!

post #145 of 151

Today my prize has arrived. I have set them up for a quick test and I can confirm that they are all functioning well.

 

I am now running-in them for at least 100 hrs before I carry out a detailed review.

 

As for the HF-5 I did not use the stock 12AU7 from Full Music (made in China) instead I changed it to RCA Grey Plate 12AU7.  I also added two damping rings onto the 12AU7 (the red rings shown in the photo).  Later I will change the stock opamp to LM-49860NA.

 

As to the Gain of the HF-5 I pushed the L switch to its "ON" position which increases the output gain by +10dB and this is more than enough to push the HE-500.  The volume is normally at 11 o'clock position for music listening.    

 

 

Lastly I have to thank Frank for offering the prize which I am a lucky one who had won it :biggrin:.

post #146 of 151
Quote:
Originally Posted by inter voice View Post

Today my prize has arrived. I have set them up for a quick test and I can confirm that they are all functioning well.

I am now running-in them for at least 100 hrs before I carry out a detailed review.

As for the HF-5 I did not use the stock 12AU7 from Full Music (made in China) instead I changed it to RCA Grey Plate 12AU7.  I also added two damping rings onto the 12AU7 (the red rings shown in the photo).  Later I will change the stock opamp to LM-49860NA.

As to the Gain of the HF-5 I pushed the L switch to its "ON" position which increases the output gain by +10dB and this is more than enough to push the HE-500.  The volume is normally at 11 o'clock position for music listening.    




Lastly I have to thank Frank for offering the prize which I am a lucky one who had won it biggrin.gif .

Well done!
post #147 of 151
Quote:
Originally Posted by inter voice View Post

Today my prize has arrived. I have set them up for a quick test and I can confirm that they are all functioning well.

I am now running-in them for at least 100 hrs before I carry out a detailed review.

As for the HF-5 I did not use the stock 12AU7 from Full Music (made in China) instead I changed it to RCA Grey Plate 12AU7.  I also added two damping rings onto the 12AU7 (the red rings shown in the photo).  Later I will change the stock opamp to LM-49860NA.

As to the Gain of the HF-5 I pushed the L switch to its "ON" position which increases the output gain by +10dB and this is more than enough to push the HE-500.  The volume is normally at 11 o'clock position for music listening.    




Lastly I have to thank Frank for offering the prize which I am a lucky one who had won it biggrin.gif .
Lucky basterd..i hate u!!! Just kidding!!!! Have fun!!! biggrin.gif
post #148 of 151
Quote:
Originally Posted by hifimanrookie View Post

Lucky basterd..i hate u!!! Just kidding!!!! Have fun!!! biggrin.gif

We're all happy for you and yet insanely jealous! smily_headphones1.gif
post #149 of 151

I have made some modifications to the EF-5 and it now sounds much better.  If you are interested to do the same please see what I have done to the EF-5 in the following link:

 

http://www.head-fi.org/t/711004/hifiman-ef-5-headphone-amplifier-mods-and-rolls#post_10385485

 

Now I am starting burning in the EF-5 and the HE-500 and will provide my impression after 100 hrs burning.

post #150 of 151
Quote:
Originally Posted by crumb View Post

 

what i would be interested in, how works the hd800 with ef-5??? please let us know your experiences ;)

 

I have tried HD-800 with EF-5 and personally I don't think they match very well. EF-5 works excellent with my LCD-X but not as good with HD-800.  The soundstaging and LF has lost by a fair amount while there is also boost in the HF thus making the music not natural to my ears.  I believe it is due to the high impedance and the low sensitivity of HD-800 which is difficult to drive.  It needs a powerful headphone amp to push.  Having said HD-800 works wonderfully with my Fidelity Audio HPA-200SE which can drive high impedance CANs and gives out sufficient power.  As to my other headphone amplifier, Yulong A18, it drives both CANs like a charm.


Edited by inter voice - 3/30/14 at 9:48pm
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