[pokenguyen]

  Not according to http://www.ebay.com/itm/Topping-NX1-Earphone-Headphone-Portable-Amplifier-3-5mm-USB-Rechargeable-Battery-/181307924700
 
- By internal NX-1 it's a 1000mAh large-capacity litchium polymer battery which the battery life can reach max 4 hours.
 
 
"litchium polymer"

 
 
Same on Amazon:
http://www.amazon.com/Topping-Portable-Earphone-Amplifier-Black/dp/B00HFMNR4M
 
1000mAh large-capacity lithium polymer battery makes the battery life can reach max 4 hours.

Here is bhazard review about battery:
http://www.head-fi.org/t/696825/40-topping-nx1-portable-headphone-amplifier/75#post_10603192
 
The description is probably poorly translated.

 

[bhazard]

  Not according to http://www.ebay.com/itm/Topping-NX1-Earphone-Headphone-Portable-Amplifier-3-5mm-USB-Rechargeable-Battery-/181307924700
 
- By internal NX-1 it's a 1000mAh large-capacity litchium polymer battery which the battery life can reach max 4 hours.
 

Bad translation. CHARGES in 4 hours from a standard USB, quicker with a smartphone type AC/usb adapter.
 
I'm about 60 hours in and it still hasn't died off the initial charge, and yes it works great with the Havi on high gain. It's pretty transparent for the price, with ever so slight warmth (which works to the Havi's advantage)

 

[Grayson73]

  Not according to http://www.ebay.com/itm/Topping-NX1-Earphone-Headphone-Portable-Amplifier-3-5mm-USB-Rechargeable-Battery-/181307924700
 
- By internal NX-1 it's a 1000mAh large-capacity litchium polymer battery which the battery life can reach max 4 hours.
 
 
"litchium polymer"

 

If you scroll down, it says 

-Working Time: 120hours

 

[BenF]

  Bad translation. CHARGES in 4 hours from a standard USB, quicker with a smartphone type AC/usb adapter.
 
I'm about 60 hours in and it still hasn't died off the initial charge, and yes it works great with the Havi on high gain. It's pretty transparent for the price, with ever so slight warmth (which works to the Havi's advantage)

How is the SQ against E12?

 

[BenF]

  If you scroll down, it says 

-Working Time: 120hours

May be it's total working time until retirement

 

[Grayson73]

 
May be it's total working time until retirement

 

[Charliemotta]

  If you scroll down, it says 

-Working Time: 120hours

 

  If you scroll down, it says 

-Working Time: 120hours

At first I thought it said  Itching Powder

 

[waynes world]

  DO IT waynes world 

 

Wayne is waning....wilting....worn down,

 
Yes, resistance is wilting at a fairly good clip!
 
Do you have the B3's Lors?

 

[H20Fidelity]

Not according to http://www.ebay.com/itm/Topping-NX1-Earphone-Headphone-Portable-Amplifier-3-5mm-USB-Rechargeable-Battery-/181307924700

- By internal NX-1 it's a 1000mAh large-capacity litchium polymer battery which the battery life can reach max 4 hours.


"litchium polymer"  

Same on Amazon:
http://www.amazon.com/Topping-Portable-Earphone-Amplifier-Black/dp/B00HFMNR4M

1000mAh large-capacity lithium polymer battery makes the battery life can reach max 4 hours.

I've msg the seller about that, it's a typo or mis phrased meaning (can fully charge in 4 hours) actual run time is quoted over 100 hours.

 

[peter123]

I'm happy to report that the Bravo v2 hybrid amp work great with the B3.

Although it's not portable it sure is one very good budget alternative for the B3.

 

[Lorspeaker]

Yes, resistance is wilting at a fairly good clip!

Do you have the B3's Lors?

Searching for pennies

 

[mikidigital]

Would Fiio E6,be enough to properly drive these,and does anybody has experience with this combo?

 

[wkder]

does anyone know if the Havis are vented? I wonder how the dual drivers fuction. are they full range or one for bass and the other for mid-treble

 

[Baycode]

does anyone know if the Havis are vented? I wonder how the dual drivers fuction. are they full range or one for bass and the other for mid-treble

I had completely dismantled once... They are vented. But the vent is under the glass and its on the middle part of plastic back. That single hole reaches out through a very shallow canal on the plastic surface but under that glass. One driver is for bass and one driver for the other frequencies. I will post photos in future...

 

[Netforce]

  Would Fiio E6,be enough to properly drive these,and does anybody has experience with this combo?

I got an e6, I will give them a spin at work with the b3. Thinking it should be fine just at a head fi meet someone who tried my e6 complained about too much hiss for his taste.