or Connect
Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps ›  iBasso D42 "Mamba" with dual dacs! !! Hey Hey! Improved Starting on Page 76 .
New Posts  All Forums:Forum Nav:

iBasso D42 "Mamba" with dual dacs! !! Hey Hey! Improved Starting on Page 76 . - Page 33

post #481 of 1153
It is possible to mod with a charging circuit and a rechargeable battery inside.

The challenge is to find a battery that can last very long and make the charger hiss free. and not affect the D4 (induce/reflected noise), And fit it all inside the casing.

I consider that when I was designing the converter, but off the shelf battery that would fit and is half the size of a standard 9V would likely last at max 2 hours most likely less. Maybe if you could find some space age battery half the size of a standard 9V and have a capacity of more than 200mAh it is worth a try, min voltage is 5V.
A 200mAh battery would likely last 5 hours.

Quote:
Originally Posted by supern0va View Post
Am wondering if you guys think its possible to mod the D4 such that the battery (a 9V rechargeable batt) charges itself when connected via USB?
Changing the batt is quite a pain.
post #482 of 1153
Quote:
Originally Posted by gamer-33 View Post
my D4 will be hear today
"hear" or "here", or was the pun intended?
post #483 of 1153
Anyone have any pics of their rig incl D4?
post #484 of 1153

Here you go!

post #485 of 1153
just got my d4. listening to Opeth's watershed in FLAC. Wonderful.
post #486 of 1153
I should add that I ordered it on Friday and got it in Northern CA today. wow.
post #487 of 1153
Quote:
Originally Posted by kobeclix View Post
Does this amp improve the sq of the srh840s specifically the bass and vocals? I want to buy this amp to improve the sq because the the zune hd and srh840s aren't doing it for me.
How much burn in time do you have on them? My 840s sounded bad at first (no bass and extremely bright), but with LOTS of burn in time (200+ hours) they sound awesome in bass and vocals (and everything else).

Give them some good cook time and see what that does for you.

I must admit that I am using an amp (Go Vibe or Headroom TBH).
post #488 of 1153
Quote:
Originally Posted by mossman View Post
Thanks! That's about the same setup I'm planning on using
post #489 of 1153
Quote:
Originally Posted by 3DCadman View Post
How much burn in time do you have on them? My 840s sounded bad at first (no bass and extremely bright), but with LOTS of burn in time (200+ hours) they sound awesome in bass and vocals (and everything else).

Give them some good cook time and see what that does for you.

I must admit that I am using an amp (Go Vibe or Headroom TBH).

I have about 50 hrs on them. I will give it some time and add a D4 to the rig as well. Im glad to hear that an amp helps with the sq.
post #490 of 1153
hi when i close itunes down and reopen agin volume goes way down then unplug usb and reopen itunes volumes back up .whats up? seems like i got to unplug usb every time i restart i itunes to get volume back up any help
post #491 of 1153
I just bought the D4 and a LOD from iBasso. Gonna be using this setup for a pair of Denon D7000s at home along with my rockboxed iPod Video v5.0 and UE.TF.10s on the go.

Can't wait !

The waiting is making me really anxious...I hope the D7000s and D4 pair up beautifully! Looking forward to feeling like a kid again during the holidays .
post #492 of 1153
Quote:
Originally Posted by madwolf View Post
It is possible to mod with a charging circuit and a rechargeable battery inside.

The challenge is to find a battery that can last very long and make the charger hiss free. and not affect the D4 (induce/reflected noise), And fit it all inside the casing.

I consider that when I was designing the converter, but off the shelf battery that would fit and is half the size of a standard 9V would likely last at max 2 hours most likely less. Maybe if you could find some space age battery half the size of a standard 9V and have a capacity of more than 200mAh it is worth a try, min voltage is 5V.
A 200mAh battery would likely last 5 hours.
How about replacement batteries for say iPod (nano or shuffle)?
Understand that those are usually 3.7V, But not sure if they will work if they are connected in series.
Here's such a website, though size is not given:
Buy Replacement Battery Kit - iPod
post #493 of 1153
It is 3.7v so need to boost the voltage will reduce the default 470mAH to about 150mAH at 9V which means about 3 or 4 hours battery life. And it might be to big to fit in as it is bigger than a 9V battery.

Quote:
Originally Posted by supern0va View Post
How about replacement batteries for say iPod (nano or shuffle)?
Understand that those are usually 3.7V, But not sure if they will work if they are connected in series.
Here's such a website, though size is not given:
Buy Replacement Battery Kit - iPod
post #494 of 1153
THE D4 O.M.G THIS THING IS GREAT I LUV IT:k sc75smile::ksc 75smile:
post #495 of 1153
I'm really close to ordering one of these from ibasso, but are the rave reviews mainly for the dac section? I would be using it mostly as an amp and with a 7 hr. battery life, I wonder if I'm better off with a Little Dot Mk1+ portable amp....Any thoughts on this?
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Portable Headphone Amps
Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps ›  iBasso D42 "Mamba" with dual dacs! !! Hey Hey! Improved Starting on Page 76 .