[purk]

Quote:

 
Also can someone explain to me how a different battery can change the overall sound quality of this amp? I'm trying to understand how the batteries would make a difference. Thanks

Justin mentioned that the Li-ion is the best for sound quality due to its lower resistance, while battery with higher voltage will work best with difficult to drive headphones.  Rechargeable Li-ion 9V batteries usually have higher amp rating (up to 600 mah) but at the expense of lower voltage rating compared to that of NIMH.  NIMH batteries can register nearly 11 volt at full charge, but the amperage is maxed out at 300 mah.

 

[klfl]

Quote:

 
 
Sorry but the Lisa 3 is not a "portable amp". Not even close

.

Size does not bother since I'm already using non-portable headphones. 

 

[Greed]

Quote:

Justin mentioned that the Li-ion is the best for sound quality due to its lower resistance, while battery with higher voltage will work best with difficult to drive headphones.  Rechargeable Li-ion 9V batteries usually have higher amp rating (up to 600 mah) but at the expense of lower voltage rating compared to that of NIMH.  NIMH batteries can register nearly 11 volt at full charge, but the amperage is maxed out at 300 mah.

 
Ah, ok that makes sense. Thanks for the clarification.

 

[fhuang]

Quote:

With full sized headphones the l3 is still a better choice over pp. Dynamics is noticeably better, overall sound is also fuller and more desktop like on the l3 even without the llp. However pp beats sr71a with ease. Tried HD800 and LCD2 and prefer l3>pp>71a. If size does not bother you get the l3, otherwise pp is a better choice.

 
 
agree but still, they're different sounding devices.  after getting pp i still want to get an l3(i have heard l3 before a few times).  wonder if we can ask justin to do a project/amp.  when size does not matter, battery powered portable amp. 

 

[verber]

Quote:

agree but still, they're different sounding devices.  after getting pp i still want to get an l3(i have heard l3 before a few times).  wonder if we can ask justin to do a project/amp.  when size does not matter, battery powered portable amp. 

 
Already exists.  It's called the GS-X mk2. Just disconnect the external power supply and wire up some batteries  

.  I can't claim this is my idea.
 
Quoting Ken Gilmore from an earlier thread about ultimate portables

New GSX and 4 x 5AH 12V gell cells certainly fits into the transportable
category.

 
--Mark

 

[gohok]

In my experience... most 9v batt actually have only 8.4v power. The worst is many off cheap and unbranded batt have lower than 8.4v, thats mean there will lower power to supply the amp which mean the output sound will impacted. Most amp have power swing for their power need, like my L3 is 24v up to 32v via external adaptor.
When i change my L3 batt from energizer 9v with maha imodeon 9.6v the change was noteable like its step up one level.

Also can someone explain to me how a different battery can change the overall sound quality of this amp? I'm trying to understand how the batteries would make a difference. Thanks

 

[Greed]

Quote:

In my experience... most 9v batt actually have only 8.4v power. The worst is many off cheap and unbranded batt have lower than 8.4v, thats mean there will lower power to supply the amp which mean the output sound will impacted. Most amp have power swing for their power need, like my L3 is 24v up to 32v via external adaptor.
When i change my L3 batt from energizer 9v with maha imodeon 9.6v the change was noteable like its step up one level.

Ah.. ok so just to be clear the MAHA IMODEON 9.6v batteries are better than a regular Duracell 9v correct? Because of the voltage difference. Any other rechargable batteries that offer increase sound quality? 

 

[En_R]

Quote:

 
 
agree but still, they're different sounding devices.  after getting pp i still want to get an l3(i have heard l3 before a few times).  wonder if we can ask justin to do a project/amp.  when size does not matter, battery powered portable amp. 

 
When size does not matter then you should no longer be looking in the PORTABLE AMPS forum category.

 

[justin w.]

Quote:

 
Already exists.  It's called the GS-X mk2. Just disconnect the external power supply and wire up some batteries  

.  I can't claim this is my idea.
 
 
--Mark

 
he has that too

 

[Audio-Omega]

Is it a good match with Fostex TH-900 ?

 

[myap2328]

Is it a good match with Fostex TH-900 ?

Let me give you the question of the day award.

 

[myap2328]

Has anyone compared the pico power to a desktop amp of similar price?

 

[AJHeadfi]

Is it a good match with Fostex TH-900 ?

TH900 is not designed as a portable headphone.

 

[cooperpwc]

Quote:

TH900 is not designed as a portable headphone.

 
Many of us use portable amps with home headphones. It can make the headphones transportable around the home, out in the garden, for carrying to another location etc.
 
In addition, a truly high quality portable amp can be a main amplifier, especially for low impedance headphones. Battery power is good.

 

[Currawong]

I'm currently exceedingly pleased with my AK100 -> Pico Power -> Symphones Magnums. Aside from needing a far more compact mini-to-mini cable, it is a far more portable complete rig (aside from the headphones) than every other combo I had before that.