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The iBasso T4, tinier than the T2 and better . . with more new images page 1,5, 14 . . - Page 9

post #121 of 733
12/1/08 at 3:41pm
Quote:
Originally Posted by billybob_jcv View Post
Just think how small they could go if it wasn't for those pesky caps and the battery!
Then it would look like this...

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post #122 of 733
12/1/08 at 8:34pm
I see it uses the LMH6643 which happens to be a very sweet sounding amp IMO. It also sports very good specs:

3dB BW (AV = +1)
130MHz

Supply voltage range
2.7V to 12.8V

Slew rate , (AV = −1)
130V/µs

Supply current (no load)
2.7mA/amp

Output short circuit current
+115mA/−145mA

Linear output current
±75mA
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post #123 of 733
12/1/08 at 10:57pm
Thread Starter 
I like the caps that are used. I guess they changed the opamp from what I understood it to be some time back.
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post #124 of 733
12/1/08 at 11:12pm
This amp is very tempting due to it's size. The supermicro is a fantastic sounding unit, and it is very small. It just sits like a block of lego in your pocket, and anyone who walks round with lego blocks in their pockets all day can tell you that you catch it at the right angle while crouching down- well it can smart fairly.

supermicro sound or t4 flat small footprint?? I am going to stop coming here, too many tempting new goodies to play with.

And shirley, thanks for the reply, i am just waiting for my player to be delivered. I have read from a few people that the s639 doesn't need amplification. I guess it will be ebst to wait until i have the player in my hands and plugged into my lugholes before i make any decision.
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post #125 of 733
12/2/08 at 2:09am
Quote:
Originally Posted by jamato8 View Post
jamato8, is your T4 the gray or the silver version? Does anyone have pics of both to compare?
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post #126 of 733
12/2/08 at 2:22am
Quote:
Originally Posted by epithetless View Post
jamato8, is your T4 the gray or the silver version? Does anyone have pics of both to compare?
the t4 is gray AND silver. Gray on one side, silver on the other.
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post #127 of 733
12/2/08 at 3:12am
Quote:
Originally Posted by mambo5 View Post
the t4 is gray AND silver. Gray on one side, silver on the other.
There is a choice when you order between grey and silver. I ordered the silver one and am waiting for it.
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post #128 of 733
12/2/08 at 5:41am
Quote:
Originally Posted by Fumoffuru View Post
There is a choice when you order between grey and silver. I ordered the silver one and am waiting for it.
whoops looks like i don't know. thanks for correcting me.
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post #129 of 733
12/2/08 at 6:34am
Quote:
Originally Posted by billybob_jcv View Post
Just think how small they could go if it wasn't for those pesky caps and the battery!
Don't forget the connectors!

Quote:
Originally Posted by dfkt View Post
Then it would look like this...
IMG:http://anythingbutipod.com/images/fo...190385-800.jpg
FIIO E3?

How about this:

It should be easily possible to get it all on that 1ct!, Because it's mostly single sided and you can of course use both sides.....-{ pling; insert lightbulb here }-, why not take a supercap about the size of that coin and solder everthing around it? Gone battery, gone big caps... except one Superfast recharge...

About the T4:
Looking at the pictures, it should almost be possible to reengineer it's schematic. So who's gone make the first mod by telling us what resistor's to swap to increase that basshump?

Quote:
Originally Posted by mrarroyo View Post
I see it uses the LMH6643 which happens to be a very sweet sounding amp IMO. It also sports very good specs:
...
Slew rate , (AV = −1) 130V/µs
...
Slew rate higher then 40V/µs, it's got my vote! But it seems there are 2 more chips in there, one of them Analog devices (?) and the other Motorola (?; Quad 2−Input NAND Gate?).
And the LMH6643 seems to be a dual opamp (L+R), but where is the rest for the 4ch setup?

Still looking for that specs of it's predecessor though...
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post #130 of 733
12/2/08 at 1:55pm
Quote:
Originally Posted by Jelle Schrijver View Post
About the T4:
Looking at the pictures, it should almost be possible to reengineer it's schematic. So who's gone make the first mod by telling us what resistor's to swap to increase that basshump?
I'd quite like to know which one to change to get a lower gain on low gain, not that i'd be able to solder things that small though
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post #131 of 733
12/2/08 at 2:19pm
Quote:
Originally Posted by Jelle Schrijver View Post
FIIO E3?
Yep.
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post #132 of 733
12/3/08 at 2:39pm
Received my T4 today. One simply can't appreciate how small this thing is until you have it in your hand. For those of you who are thinking about ordering or about to, I would suggest getting silver, which is what I ordered. The two piece construction looks more uniform, although I don't know what the grey would look like.

With regards to the sound, I've used mine for the hour that it has been in my possession and I'm already loving it. Tried with both PX100s and X10s, the sound is impressive from something so small.

I'll have some pictures up later.
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post #133 of 733
12/7/08 at 5:44pm
Anyone from Europe got a T4? Does it come with a 230V/50Hz charger and Euro plug?
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post #134 of 733
12/7/08 at 6:57pm
dfkt, It comes with a lead that connects to a standard USB socket on a computer or plugs into the supplied USB socketed charger. The charger is 100 - 250 V input but is two pin US style so you will need an adapter.
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post #135 of 733
12/7/08 at 7:06pm
Thanks, JRboy - good to know, I can live with that.
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Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps › The iBasso T4, tinier than the T2 and better . . with more new images page 1,5, 14 . .