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Headamp Pico Power Impressions Thread - Page 3

post #31 of 353

Thanks folks. Next would be the power consumption and expected life span of different battery chemistries in PP? I have only found 9V rechargable batteries with low amp hour ratings, eg, 300 mAh.

 

I see this is getting a workout over on the preorder thread.


Edited by AJHeadfi - 3/23/13 at 2:06am
post #32 of 353

nominally the amp uses about 15mA of current.  so you can divide the mAh of the batteries to get a rough idea of a best-case of how long it will last

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post #33 of 353

 

So far so good. It works well with the Dragonfly as a source (in this case with a separate USB power supply). The overall sound is a bit mellow, probably because of the Dragonfly.

post #34 of 353

My pico power just arrived this afternoon , thank you Justin for sending my orange pico power .

looks and SQ out the box excellent .

 

source: iPhone 4 S

amp : Headamp pico power orange 

headphone : ULS sig DJ 

cable : for ULS sig DJ use oyaide with rhodium connector 6,3 mm

 

 

 

 

 

post #35 of 353

Source : AK 100 DIY mod 

lamp : pico power orange 

Pheadphone : LCD 3

cable : Norse audio Reign 24 braid x 21 awg

            Mini to mini Stax 

 

 

 

post #36 of 353

Hmmmm ... that orange Pico looks very copper.

post #37 of 353

I appreciate people's pictures... but I am really looking forward to reading about what people are hearing.

 

In the last week I have done a fair amount of listening to the Pico Power, typically a Lavry DA-11 as source, but sometimes an AQ DragonFly, and occasionally taking sound directly from the headphone jack of my iPhone.  Music is nearly all loseless 44/16 though I have a few higher resolution tracks. I have been mostly listening to HD800, though I have tried Westone 5ES and Etymotic HF5 IEM.  I have been very impressed so far. There have been no glaring flaws in the Pico Power which is pretty impressive given it's price, size, and battery power.  Tonal balance is neutral, reminding me of my Headamp GS-1.  I had no problem driving my HD800 to high listening levels with the gain set to medium.  The amplifier works well on low gain for the IEMs. I am pretty sure  I have gotten more than 20 hours on the first two sets of disposal batteries but I haven't been keep close track... my rechargeable batteries arrive today. Channels are well balanced even at low volume levels. I hear no noise with the HD800, and don't hear noise with IEM until the volume is turned high enough to damage my hearing if music was playing.

 

Bass: clear and controlled.  The speed similar to the GS-1 and detail is close, though the GS-1 seemed to have slightly more weight / impact. It will come as no surprise that it's not at the same level as the GS-X mk2.

 

Mids: Fairly smooth but with a bit of grain,  good level of detail, a bit lean in the lower-mids?  Depending on the track it seems to be the GS-1 equal, sometimes the GS-1 seems a bit more refined.  GS-X seemed a good bit more refined.

 

Treble: Crisp without being glaring. At the very top end there seems to be a bit of a roll off compared to the GS-X.  Sometimes I though it was the GS-1's equal, and sometimes it didn't depending on the track.

 

Sound Stage: Smaller than either the GS-1 or the GS-X with less  air.  This is what I most quickly noticed listening to the Pico Power.

 

Summary for me: A battery powered amplifier which drives the HD800 as well as many desktop amplifiers I have listened to and completely blows away the amplifier found in every USB power DAC/Amp I have heard, and the few battery powered amplifiers I have tried (my experience with other battery powered amplifiers is not extensive).  On lesser tracks I sometimes couldn't tell this difference between the Pico Power and my GS-1 in blind A/B comparision.  With high quality sources it becomes clear that while the Pico Power it's not quite a battery powered GS-1, it's pretty close, and I like it more than the Gilmore Lite.  The Pico Power is good enough for me that I will no longer feel compelled to haul around a wall powered amplifier when I want to listen to the HD800 outside my living room. I am not even going to bother with desk amplifier in my office anymore.  When I am not 100% focused on music, the Pico Power is good enough.


Edited by verber - 3/25/13 at 5:14pm
post #38 of 353

My. Impression with burn in about 6 hours time as follow :

 

source : iPhone 4 S 

              AK 100 DIY mod 

dac : ibasso DB 2 balance Dac 

Amp : Pico Power orange colour

headphone : ultrasone Sig DJ

                      LCD 3 

cable : sig DJ use oyaide after market cable made in Japan 

            LCD 3 use Norse Reign cable 24 Braid x 21 awg 

            AK 100 > dB 2 use syst concept Canada optical cable 

            DB 2 > pico power use hiroshe balance to neutrik mini 3,5 mm jack

            iPhone 4 s to pico power use mini to mini Stax sr 002

 

pico power + iPhone 4 s + ULS sig DJ 

Gain : low gain 

High : crisp , clean and clean with rich detail but not harsh 

mid : sweet , clear and clean midrange 

bass : detail , clean and very deep bass with very good impact .

separation : for portable amp is very good separation , that I can feel the position from musician and Sanger .

soundstage : wider than my pico Dac amp , with better depth 

 

Pico power + AK 100 + db2 + LCD 3

gain : high gain 

high : with external Dac has more body compare. Direct iPhone 4 s or AK 100

mid. : with external Dac more sweet and better body , very clear and clean

bass : with external Dac more body and better bass impact as well   

           I can hear more body in kick drum and contra bass .

 

conculsion :

with or without Dac , Pico Power sound quality is excellent .

sound quality like desktop amp , so full and rich in all range , from bass mid and high .

The pico power is one of the best amp from my portable amp collection .

The pico power is one of the powerful portable amp I have own .

 

pico power in high gain is not only good for hard to drive cans like LCD 3 and T 1 and hd 800

pico power in low gain is excellent to drive my iem like sm 64 , fit ear MH 335  DW and um miracle too 

 

the pico amp is dead silent amp in low gain , in high gain is minimal hiss to dead silent indepent what kind of cans I use to pair with .

 

this is my personal opinion 

post #39 of 353

Question.  Is the Power LED supposed to stay light at all time?  I fed the amp new batteries and the light shut off after couple of hours.  Thanks.


Edited by purk - 3/25/13 at 1:12pm
post #40 of 353
Quote:
Originally Posted by purk View Post

Question.  Is the Power LED supposed to stay light at all time?  I fed the amp new batteries and the light shut off after couple of hours.  Thanks.

Bravo Justin beerchug.gif

My pico power battery run already 12 hours and still running until now .

the power led is always stay light at all the time .

post #41 of 353
Quote:
Originally Posted by IceClass View Post

Hmmmm ... that orange Pico looks very copper.

Thank you 

It's look like copper sometimes indepent from the light from our enriroment.

i am waiting my purple pico power too . 

post #42 of 353
Quote:
Originally Posted by Currawong View Post

 

So far so good. It works well with the Dragonfly as a source (in this case with a separate USB power supply). The overall sound is a bit mellow, probably because of the Dragonfly.

Hi Currawong 

may I ask you about the dragonfly ?

is the SQ from dragonfly overall so mellow ?

what kind of headphone do you use in pair with pico power ?

i saw you use low gain  

thank you 

post #43 of 353
Quote:
Originally Posted by purk View Post

Question.  Is the Power LED supposed to stay light at all time?  I fed the amp new batteries and the light shut off after couple of hours.  Thanks.

If the light is off, batteries are below the specified limit that Justin mentioned in the earlier part of the preorder thread.

post #44 of 353
Quote:
Originally Posted by MilesDavis2 View Post

If the light is off, batteries are below the specified limit that Justin mentioned in the earlier part of the preorder thread.

That's what I thought.  However, I'm already using two set new 9 volts batteries.  Maybe those batteries are defective.  Will use my 9.6V NiMH and report back.

post #45 of 353
Quote:
Originally Posted by purk View Post

That's what I thought.  However, I'm already using two set new 9 volts batteries.  Maybe those batteries are defective.  Will use my 9.6V NiMH and report back.

In addition, even if the light is off at it's early stages, music is still happening but volume is diminished, distorted, and it finally...silence. Yesterday, I used a pair of freshly charged Powerex NIHM and at 14 hours straight,  light is sill on. i haven't pushed it yet to drain the battery. 14  and beyond...not bad

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