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REVIEW: Head-direct.com HiFiMan EF2 tube Hybrid Amp with USB DAC - Page 4

post #46 of 1318
Quote:
Originally Posted by HeadphoneAddict View Post
Thanks again! You really wanted this amp to get a good review for Fang, eh? Nah, you just wanted me to enjoy it more and were being nice to me.
Definitely the latter

Plus, I bought 4 of the Raytheons to get a better price, so I had 2 spares
post #47 of 1318
Quote:
Originally Posted by HeadphoneAddict View Post
Assuming the EF2 is fully burned-in, yes, it is better than the D2 Boa, no question - while the D2 Boa isn't bad it just isn't as enjoyable as the EF2. It's probably on about the sound quality level of the 3MOVE or XM5 with upgraded opamps and BUF634 buffers, but with a bit more power than the XM5 and a little more euphonic sounding than either (with stock or rolled tubes).

The D10 and Pico, while having less power for 300 ohm headphones, will be more detailed and spacious - but the Pico is not quite as warm and mellow and romantic sounding as the EF2, especially with the Raytheon 6AK5 tubes. I haven't listened to the stock D10 for a long time, but I would say it sits between the D10 and EF2 in warmth when using the Raytheon tubes (maybe closer when using the stock tubes).
thanks a lot for the response, i was considering the d10 and pico but this is enough for me to place the order for the EF2 instead

i will keep my d2 boa until the ef2 comes for comparison's purposes.. i cant wait


one quick last question:

if i wanted to upgrade the tubes in the future, how hard is that to do? is it a plug and play type of thing or does it require tools/experience?

thanks
post #48 of 1318
Thread Starter 
Changing tubes is like sticking flowers in a vase. No tools needed.
post #49 of 1318
Good to hear, thanks again for the review, can't wait to receive mine!
post #50 of 1318
Thanks HeadphoneAddict and Skylab for the tube rolling info, that's very helpful for a newbie like me.

Now I'm happily waiting for my EF2 to arrive!
post #51 of 1318
I could resist no longer. Payment has been sent. Awwwwww yeah.

I'm going to take my time and read more on tubes before I go buy some. I should have plenty of time while burning in and trying out the stock tubes.
post #52 of 1318
Quote:
Originally Posted by FullTwisting View Post
I could resist no longer. Payment has been sent. Awwwwww yeah.

I'm going to take my time and read more on tubes before I go buy some. I should have plenty of time while burning in and trying out the stock tubes.
i felt the same way i too am going to start reading up on tubes, this is my first tube amp! albeit a hybrid


btw, people like skylab, headphoneaddict, etc should be receiving commission lol i'm sure many people purchase products based on these detailed reviews !
post #53 of 1318
Great job Larry as always. Nice to see that you've gone to the extent of comparing it with Amphora and others. Sure seems to be another hit from Head-Direct.
post #54 of 1318
I would like to thank both HeadphoneAddict and Skylab for your great reviews.
post #55 of 1318
Thread Starter 
Thanks, or You're Welcome!
post #56 of 1318
I just picked up my EF2 that Fang sent me. I have had a busy weekend but I wanted a quick listen so I hooked it up to my 160 Gb iPod Classic using an ALO Wooden Dock and a pair of Silver Sonics BL-1 interconnects made by Moon Audio. The files in the iPod are all Apple Lossless and the quick listen tells me this is a very nice sounding unit. I will have a lot more to say and will post more in the next week or so. Meanwhile I leave you with the following pictures.







Some quick specifications are:

Imput Impedence: 47k
Output Impedence: 32-300 Ohm
Output at 32 Ohm: 3 v, 320 mw
Output at 150 Ohm: 6.2 v, 256
Freqency: 20-20khz +-0.2db
S/N: 95db
DAC Chip: Burr-Brown PCM2702
Tube: China 6J1 * 2 pcs
Input Voltage: 16 v to 18 v; 500 mA
Power Supply: 110 v or 220 v

You can read more about it at: Head-Direct.com | YUIN

At $189 this should be selling like hot cakes!
post #57 of 1318
Thread Starter 
Cool - looking forward to your thoughts.
post #58 of 1318
Just wondering, is the dac 24 bit / 96 khz?
post #59 of 1318
Thread Starter 
Quote:
Originally Posted by shasty View Post
Just wondering, is the dac 24 bit / 96 khz?
No, it can only go as high as 16/48, and I leave it at the 16/44.1 default when I plug into my Macbook.
post #60 of 1318
Wow - cool seeing it next to an iPod - that thing is seriously small for a desktop amp with an inbuilt DAC. Impressive - look forward to hearing your thoughts!
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