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iBasso D42 "Mamba" with dual dacs! !! Hey Hey! Improved Starting on Page 76 . - Page 5

post #61 of 1153
Thread Starter 
Quote:
Originally Posted by HiFlight View Post
I must say that the dual DACs really sound fine, even right out of the box with only an hour or so of use. While the amp can be powered by USB or battery power when using a USB signal input, the amp can only be used with battery power when using the Aux input.

I really like the 9v internal contacts...real contacts, not the cheap snap-in connector used by most 9v components.

After just a brief audition of the stock opamps, of course I just had to roll to the D4 Topkit!

I am using 9.6v 230mah PowerEx rechargeable cells, now I need to see what the run time is when using only the aux input/amp. BTW, the battery can be changed is less than a minute by just removing 2 thumb nuts.

It looks to me at this point as if iBasso has another real winner!
So any further impressions?
post #62 of 1153
the minus one is the battery,it is only for arround 9 hours playing...
post #63 of 1153
I am going to evaluate some L-R opamps that draw low power, but will still sound good with bypassed buffers. Most of the current draw in the D4 is in the L-R and buffer opamps. The DACs are entirely powered by the USB and never by the battery. It should be possible to find a combination that will increase battery play time.

When using the USB input, selection of the 5v position should greatly increase battery life as well.
post #64 of 1153
And I got my iBasso D2+ just a week or two ago. Sigh.

Oh well, still sounds good, so.
post #65 of 1153
Quote:
Originally Posted by jamato8 View Post
So any further impressions?
Well, just for grins, I hooked up my D4 (with Topkit) to my AKG K-340s, which are probably the most difficult dynamic cans to drive, and believe it or not, I was able to get more volume than I cared to use, with excellent SQ throughout the entire audio spectrum. Sounded effortless, very similar to my desktop amp.

I would assume from this that the D4 will easily handle Senn. HD650s, etc.

9v to the amp does make a difference. Output performance was similar to my P3+ although all of the opamps are different.
post #66 of 1153
One thing to keep in mind regarding battery life: When using the USB input, selecting the 5v power position will supply the entire amp with 5v power, and no battery power at all is utilized.

When I am using low-draw opamps, there is not much difference in SQ between the 2 settings.

I have a minimum current set in place now, and will try to get an idea of the difference in battery life between the low-draws and higher current opamps.
post #67 of 1153
Just ordered the ibasso D4 today.. Very excited.. Does anyone know about how long it takes to get an amp from them to the West Coast?
post #68 of 1153
Thread Starter 
It takes about 2 to 3 days once shipped and shipping is normally pretty fast.
post #69 of 1153
Am really keen to pick this up for the DAC.

Can someone compare it to the PICO DAC (which uses the same Wolfson chip, but only one).

Would be great to compare it to a class-leading desktop DAC too!
post #70 of 1153
Quote:
Originally Posted by Nirvana1000 View Post
Too bad they don't include the opamp rolling kit like the P3 and the D10!
I emailed iBasso to see if they could include a kit as per the P3 and D10 but they said that those opamps aren't compatible and asked me to contact Hiflight for a kit!

Paging Hiflight! Any plans for a D4 kit?
post #71 of 1153
Quote:
Originally Posted by shawn_low View Post
I emailed iBasso to see if they could include a kit as per the P3 and D10 but they said that those opamps aren't compatible and asked me to contact Hiflight for a kit!

Paging Hiflight! Any plans for a D4 kit?
haha.. Hiflight already setup a topkit for D4 but no details yet as he may be in search of a various combinations.
post #72 of 1153
Quote:
Originally Posted by shawn_low View Post
Am really keen to pick this up for the DAC.

Can someone compare it to the PICO DAC (which uses the same Wolfson chip, but only one).

Would be great to compare it to a class-leading desktop DAC too!
I also want to know how well it compares with the Pico amp/dac.

I'm considering either getting the Pico or the D4. Does the D4 have a very low noise floor and good rf shielding? My laptop output already drives me insane, the jack is probably messed up since you would randomly start hearing static from it, and if I accidently tap my headphone jack that's connected to my laptop, the static noise would occur (and it's extremely loud and I need to tap it several more times to get it to stop). Sorry if I'm using the wrong terms, I'm still very much a noob about audio equipment.
post #73 of 1153
Quote:
Originally Posted by V3ng3anc3 View Post
I also want to know how well it compares with the Pico amp/dac.

I'm considering either getting the Pico or the D4. Does the D4 have a very low noise floor and good rf shielding? My laptop output already drives me insane, the jack is probably messed up since you would randomly start hearing static from it, and if I accidently tap my headphone jack that's connected to my laptop, the static noise would occur (and it's extremely loud and I need to tap it several more times to get it to stop). Sorry if I'm using the wrong terms, I'm still very much a noob about audio equipment.
Well, one thing that I am thinking is: the Pico costs more than double what the D4 costs.

Will you be getting double the perceived audio gain from the PICO? That extra money can go to new cans, IEMs or a DAP and some nice cables and a six-pack of beer!

What's tempting me about the D4 is the low price considering it uses the same Dac chip as the Pico...
post #74 of 1153
Quote:
Originally Posted by shawn_low View Post
Well, one thing that I am thinking is: the Pico costs more than double what the D4 costs.

Will you be getting double the perceived audio gain from the PICO? That extra money can go to new cans, IEMs or a DAP and some nice cables and a six-pack of beer!

What's tempting me about the D4 is the low price considering it uses the same Dac chip as the Pico...
Yeah, the low price is very tempting, but I still am curious about how the D4 fairs against the Pico. At half the price of the Pico, I could also possibly buy a Little Dot tube amp with it.

And how important is having a nice cable like a 3.5mm to LOD? Personally I think it's insane to spend $75+ on cables like an ALO cable. But does it make a drastic difference? I was thinking of just getting the one iBasso makes since it'll be easier that way if I get the D4, is it any good? Sorry for all the questions.
post #75 of 1153
Is it a DAC/Channel architecture? One for the left and one for the right.
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