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iBasso D42 "Mamba" with dual dacs! !! Hey Hey! Improved Starting on Page 76 . - Page 24

post #346 of 1153
Quote:
Originally Posted by HeadphoneAddict View Post
The D4 is more balanced and neutral sounding than the D2 Boa (haven't heard the D2+). And the D4 DAC seems to be about as detailed as the Pico's (slightly drier and less dynamic, but very close). That right there is a plus.

Add to that the ability to drive an HD600 or HE-5 when on 9v battery power better than the D2 can with it's 5v supply, and I would pay the extra for the D4. With the UM3X and W3 the difference in power may not be as much of an issue, but I'm sure someday you are going to want to try full size headphones and the difference is noticeable. And, the improved frequency balance will be an improvement with the IEM regardless of power.
Hey Larry, how well does the D4 drive the HD650s and the HD600s compared to other amp/dacs?
post #347 of 1153
Thanks everyone for your comments! I am still undecided, but somewhat am slightly swayed towards the D4. Its prob easier to sell/trade anyway if I decide that I did not like it. Maybe I'll do another rd of listening and buy it today (hopefully).

Quote:
Originally Posted by Wingsabr View Post
The extra 50 is really the extra dac as it's one per channel L and R where the D2+ is one for both. The deciding factor for me was the battery because Im away from my computer more often than not so I needed the extra battery juice.
i think i'm going to use it more often with my mac, so it may not be that bad.

Quote:
Originally Posted by HiFlight View Post
The D4 has no provision at all for using an external battery charger as it is powered either by USB input or battery.
I meant that I need to get an external charger for the 9v rechargeable batt.

Quote:
Originally Posted by charlie0904 View Post
are you ok with external battery? the answer is pretty clear.
it isn't that clear to me. i am ok as long as i dont have to do it too often.

Quote:
Originally Posted by HeadphoneAddict View Post
The D4 is more balanced and neutral sounding than the D2 Boa (haven't heard the D2+). And the D4 DAC seems to be about as detailed as the Pico's (slightly drier and less dynamic, but very close). That right there is a plus.

Add to that the ability to drive an HD600 or HE-5 when on 9v battery power better than the D2 can with it's 5v supply, and I would pay the extra for the D4. With the UM3X and W3 the difference in power may not be as much of an issue, but I'm sure someday you are going to want to try full size headphones and the difference is noticeable. And, the improved frequency balance will be an improvement with the IEM regardless of power.
As mentioned earlier, my initial perception is that the D4 has a wider soundstage and more clarity, so I do agree that the D4 is a better amp. Being even on equal footing with Pico and Predator and the likes is a big plus for me.... extremely good value for a $200+ amp.

However I am not convinced that I will be trying full cans anytime soon, so by the time i do, there may be some very new and sexy amp
post #348 of 1153
@supernova

IMO, D4 isn't so good for portable because of it battery life and size. T3 is better.
but compared with D2+ for S$50 more from stereo? no doubt D4 is a better choice.
post #349 of 1153
Quote:
Originally Posted by A_Dying_Wren View Post
Hey Larry, how well does the D4 drive the HD650s and the HD600s compared to other amp/dacs?
I posted about that somewhere. The HD600 need more voltage swing and power than many other full size headphones. The D4's power in 5v mode is no better than the D2 or D10 in 5v mode; being slightly more than the Icon Mobile, about the same as the Predator, and very slightly less powerful sounding than the P-51. That's enough power to sound nice at normal listening volumes, but not enough to rock out with rock or electronic or to pretend like you are there at a jazz club with the musicians.

However, in 9v mode the D4 is noticeably more powerful with HD600 than those above. It comes closer to the power or the Pico, which seems to be slightly below the power of the 3MOVE with 9v battery when used with the HD600. The 3MOVE in 5v mode (USB only, no battery) also suffers when driving the HD600, but with a 9v battery it does much better. So, the D4 in 9v mode, like the 3MOVE or Pico, is better for HD600 even though the others can sound nice but just not play as loud. I don't have HD650 to try, but the HD650 always seemed to me to thrive on more power than the HD600 and sounded darker to me, and the two times I've owned them I sold them. (note, I think the Vivid V1 must use a voltage multiplier or something, as it is the only 5v charging DAC/amp I've tried that seems to be able to reach the same power levels with HD600 as the Pico in previous reviews).
post #350 of 1153
Quote:
Originally Posted by charlie0904 View Post
@supernova

IMO, D4 isn't so good for portable because of it battery life and size. T3 is better.
but compared with D2+ for S$50 more from stereo? no doubt D4 is a better choice.
D2+ is more than S$50 cheaper... its about US$50 (and anyway that's the price difference on the iBasso website), which was what I meant.


Anyway, I tried again today, and bought the D4 I hope its a good purchase... using the AUX input (via an LOD) showed that D4 is better, so I expected it to be even better when using the dual DACs. Am not disappointed!

Burning in now!

Thanks guys!
post #351 of 1153
Agree that SMD are better soldered and all the parts should be kept as closed to the op-Amp as possible. Noted the Zobel's Network capacitor is now SMD as well.

Just did a quick look at the circuit/layout of the D4, and made the following observation, with regards to the AMP section.

1) The Circuit is very similar to D10, But ibasso did a rework with regards to layout. The D4 is much cleaner and less complicated. In my view the D4 AMP section is better than the D10. But I Could not clearly see the ground plane of the D4.

2) The output serial resistance have been changed from 1 ohm on the D10 to 4.7ohm on the D4. A very bold and eyeopener move from Ibasso. A perfect amplifier in theory would try to lower the internal resistance and here they are increasing it. The idea of the double bypass buffers, over the single bypass, is to reduce the output series resistance. I even connect the BUF634 output to the 2 resistor to reduce the output resistance. Maybe we are looking at different things, or I am missing something. Maybe a DC/ground loop issue or ringing.

I suspect users of low impedance headphone might hear a difference.

Another plus about the D4 is that The rollable OpAmp comes with a lower profile(less inductance) and less pointed edges.

Quote:
Originally Posted by jamato8 View Post
I am glad the AD8616 is in there. That it isn't swappable doesn't bother me as it is an opamp I find very agreeable and to be honest, SMD's are better off hard soldered to the board due to inductance, and other possible forms of induced distortion.
post #352 of 1153
Quote:
Originally Posted by HeadphoneAddict View Post
I posted about that somewhere. The HD600 need more voltage swing and power than many other full size headphones. The D4's power in 5v mode is no better than the D2 or D10 in 5v mode; being slightly more than the Icon Mobile, about the same as the Predator, and very slightly less powerful sounding than the P-51. That's enough power to sound nice at normal listening volumes, but not enough to rock out with rock or electronic or to pretend like you are there at a jazz club with the musicians.

However, in 9v mode the D4 is noticeably more powerful with HD600 than those above. It comes closer to the power or the Pico, which seems to be slightly below the power of the 3MOVE with 9v battery when used with the HD600. The 3MOVE in 5v mode (USB only, no battery) also suffers when driving the HD600, but with a 9v battery it does much better. So, the D4 in 9v mode, like the 3MOVE or Pico, is better for HD600 even though the others can sound nice but just not play as loud. I don't have HD650 to try, but the HD650 always seemed to me to thrive on more power than the HD600 and sounded darker to me, and the two times I've owned them I sold them. (note, I think the Vivid V1 must use a voltage multiplier or something, as it is the only 5v charging DAC/amp I've tried that seems to be able to reach the same power levels with HD600 as the Pico in previous reviews).
Thanks for your impressions and advice Larry. I gather that the 5V is the DAC from USB and 9V is just as an amp with battery? I'll be using the D4 exclusively as a DAC. Compared to the other proper non-portable amp/DACs like the Hifiman EF1 and the maverick audio dac/amp, I guess the D4 doesn't hald a candle to them especially running at 5V?

Gah idk whether to get the D4 as an excellent source then maybe pick up an amp a year later or so to accompany it or to go for one of the low-end desktop amp/dacs (probably the maverick).
post #353 of 1153
For those considering the T3 over the D4 (or in addition to it) as a more portable solution, please be aware that it is *tiny* : considerably smaller than any DAP I own bar the Shuffle. The end result, in my case, is that I have mislaid the thing : I know its here somewhere, but just where escapes me. The obvious solution is to affix it to your source ASAP after the ting arrives, and leave it connected even when recharging if possible. As I've said before, Apple should contract out their digital amp development to iBasso ....
post #354 of 1153
Can the D4 be used as a DAC and amp at the same time where the amp section is powered by the battery? Or if you use the DAC and amp together, does the amp automatically select USB power (since it's connected anyway)?
post #355 of 1153
Can use battery whenever you want. Just flip the switch on the back.
post #356 of 1153
Quote:
Originally Posted by estreeter View Post
For those considering the T3 over the D4 (or in addition to it) as a more portable solution, please be aware that it is *tiny* : considerably smaller than any DAP I own bar the Shuffle. The end result, in my case, is that I have mislaid the thing : I know its here somewhere, but just where escapes me. The obvious solution is to affix it to your source ASAP after the ting arrives, and leave it connected even when recharging if possible. As I've said before, Apple should contract out their digital amp development to iBasso ....
That sucks...I used 3M double sided adhesive as I knew I'd probably lose the dang thing if it wasn't attached to my iPod.
post #357 of 1153
Quote:
Originally Posted by A_Dying_Wren View Post
Thanks for your impressions and advice Larry. I gather that the 5V is the DAC from USB and 9V is just as an amp with battery? I'll be using the D4 exclusively as a DAC. Compared to the other proper non-portable amp/DACs like the Hifiman EF1 and the maverick audio dac/amp, I guess the D4 doesn't hald a candle to them especially running at 5V?

Gah idk whether to get the D4 as an excellent source then maybe pick up an amp a year later or so to accompany it or to go for one of the low-end desktop amp/dacs (probably the maverick).
Quote:
Originally Posted by pj_rage View Post
Can the D4 be used as a DAC and amp at the same time where the amp section is powered by the battery? Or if you use the DAC and amp together, does the amp automatically select USB power (since it's connected anyway)?
The D4 can run DAC and Amp both off 5v with no battery, like the 3MOVE, so it is in a lower power mode. Or, it can run DAC off the 5v but the amp off the 9v - and they can be used together still, like the 3MOVE. With the 9v switch turned on, the amp can ignore the 5v USB power that the DAC is still using to feed the amp. On the 3MOVE you must insert and remove the battery since there is no switch to do that.

The D4 sounds nice at 5v, but with 9v it comes closer to the desktop amps than with the 5v only driving the amp. Most desktop amps still top the D4's power when D4 is used at 9v, but it is closer than the 5v mode that can't keep up.

Now, with low impedance phones the D4 in 5v mode does much better than with 300 ohm HD600, coming closer to desktop amp performance (in the same price range), unless you are using an inefficient low impedance phone like the HE-5. The 9v mode still helps noticeably with the HE-5 to get more volume, as the 9v battery adds voltage and current above the 5v power supply.
post #358 of 1153
Quote:
Originally Posted by HeadphoneAddict View Post
The D4 can run DAC and Amp both off 5v with no battery, like the 3MOVE, so it is in a lower power mode. Or, it can run DAC off the 5v but the amp off the 9v - and they can be used together still, like the 3MOVE. With the 9v switch turned on, the amp can ignore the 5v USB power that the DAC is still using to feed the amp. On the 3MOVE you must insert and remove the battery since there is no switch to do that.

The D4 sounds nice at 5v, but with 9v it comes closer to the desktop amps than with the 5v only driving the amp. Most desktop amps still top the D4's power when D4 is used at 9v, but it is closer than the 5v mode that can't keep up.

Now, with low impedance phones the D4 in 5v mode does much better than with 300 ohm HD600, coming closer to desktop amp performance (in the same price range), unless you are using an inefficient low impedance phone like the HE-5. The 9v mode still helps noticeably with the HE-5 to get more volume, as the 9v battery adds voltage and current above the 5v power supply.
Hi,

I have just received my D4 in the mail,I'am so excited, haven't opened the package yet
post #359 of 1153
Thread Starter 
Quote:
Originally Posted by kunalraiker View Post
Hi,

I have just received my D4 in the mail,I'am so excited, haven't opened the package yet
It's ok. You can open the package now. :^) go ahead, open it. go on. . .

a hint, don't use an ax like I do, use a knife or like object. .
post #360 of 1153
Quote:
Originally Posted by jamato8 View Post
It's ok. You can open the package now. :^) go ahead, open it. go on. . .

a hint, don't use an ax like I do, use a knife or like object. .
I just opened it, it is so tiny and cute,my baby.
I like the gray case.
Straight away turned it on, guys this is what I was missing,its sounds soooooooooooooooo meloooo,I love it, tried both Gain settings,I think I will stick with the High Gain,played it on my Sennheiser HD 25-1-II, the only think I didn't like was the thud when you turn it on.

This is my First Commercial Amp after 2 cmoys, and guys I still don't know yet as I haven't listened much but right now I can say its worth the price.

Maybe RSA and Pico have better cosmetic build quality, but this thing is build like a tank and for this price if it can match Dessktop SQ I think I have made the right choice

Will post second impressions when home, now back to work.
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