IMHO, eokboy or thedoctor amp will sound better. according to what i heard lah. =)
how ever, if battery is an issue, PA2V2 is not bad as it run on AA battery rather than 9V.
and it can last really long time.

never test before...still got ah?

Do you own or listen to these amps you mentioned? Just want to know.

^ yeah, you guys should stop spreading false rumours. let's not turn this place into Head-Fi.
maybe someone needs to write some kind of comparo against those two non-branded headamp mentioned up there. but wait, someone already does that, a while back.

PcWork, have you ever heard of them personally? i mean, they're not hard to build, and you should be experienced enough to build them and test the sound. them class ABs i mean.

cham ler....
i tested my HP1000 with various settings

1. onboard lappy soundcard.
2. PSC805 Philip ext soundcard.
3. onboard wif mini-eph
4. PSC805 Philip with mini-eph

All oso sounds the same to me, xcept its louder wif amp.

then i tried my bro's RM 45 no-brand headphone
it sounds the same oso!!!

looks like i got stone ears

haha
same setup with me
minieph do improve a bit in bass
for me it is jz act as the volume booster

1. onboard lappy soundcard.
2. PSC805 Philip ext soundcard.

hw can no diff?

I prefer listening to mini-EPH wif Adapter powered. Yes, i can feel the soundstage details is much clearer & bass is more tight.
I am still fixing the batteries issue. My bro will bring back enegizer batt within this week.

As for Pa2v2, it does wonderful job wif 2 AA batteries.
I had been using two AA batteries which cannot drive my Hi-MD player anymore. It pumps up Pa2v2 closer to 10 hours before Flat.
Imagine how long it can last wif full battery charge? Cheap batt cost is wat i concern most of the time.

Aichiban,
perhaps u should try sentimental or country folk song wif featherly light vocals. Try audiophile albums. Tos are recommend to test ur sound system.

I spent roughly two hours to test One song on both of the amps i got here.
Alison Krauss - When you say nothing at all.

So far, i found it comfortable to test my setup than others music i tested b4.

Maybe he dunno how to explain gua.. sure at least bit better.

Mini-eph is quite ok. Pa2v2 is that so good?

never tried.

Although I know batteries are much more stable DC source to power the amp, but I still like DC adaptor, because I am lazy to change batteries when they go flat I don't really need real portability because the minijack to minijack interconnect itself already damn long, it's not even near portable

Charging while using your electronic device will introduce kind of humming at the background. The best is just using battery juice purely.

well it's not really noticable to me. At least at 3 o'clock, it's still very stable on thedoctor's DIY headamp, but normally there's some slight pop for around 10~20sec after startup after that it's stable , warm sound. 2107PA really sounds very nice especially on bass and sound stage

You are not an audiophile yet or particular on clean sounding yet, that's why you have this statement.
There is a local DIY DAC which using UPS battery (not the UPS itself) to powering the DAC to get the best juice out of it.

ah.. yes, I am not really sensitive to sound, maybe not exposed to too many high end stuff yet. It's clearly a noob statement to you and it's just my own humble opinion But one thing I am glad is, I don't have to spend much coz not even audiophile yet

All hail Master Davis

Every one have to going throgh certain learning path to know more what is great music. Like myself will try my best time going to live concert and also listening more to audiophile music to learn more.

May be you can start hunting those weird title available in the market

ya ya. i'm sure it takes quite a long while to get one's ears used to the audiophile sound (or the audiophile world for that matter).
so for the rest of us that haven't gotten the golden ears yet, or not yet got the audiophile ceritificate, we could only base our opinions on something like this :

^ that shows the noise floor of batteries when driving a load.

or this particular graph, shown in tnt-audio :

that shows the noise floor of batteries (unloaded) VS batteries (loaded) VS regulators.
which clearly shows that batteries have higher noise floor/transient response/frequency response (when loaded) than the all time ever sucky regulators + AC power implementation. but then again, whoever listens to test results, right? people listens to audio signal, rather than test equipment.

but still, saying that batteries are the cleanest source of power or that it has the cleanest sound (which i'm sure meaning low noise floor/pink noise/freq response/transient response) is kindda a hoax. or a statement that has no scientific support or yet-to-be-tested-and-supported.

but then again, i'm sure it's just me, who's not an audiophile. and that i'm wrong to trust test results and test equipment rather than subjective audiophile rave comments.

It a good to know it....

^ and trust me, there's a whole lot more where that came from. results i mean. both supported by pictorial graph and colourful lines/bars that have a meaning to it. supported by schematics, engineering facts, scientific theories/theorems and a whole lot of reading.
and i doubt anyone would even be interested to read the hundreds of technical posts regarding the audiophile VS technical geek arguments regarding whichever is the cleanest source of power.

yeah sure, attend the next AV Fest and meet with some audiophile and talk to them. or listen to equipments powered by both AC plug and batteries and judge by that. but then again, i doubt the upcoming AV Fest will have anything even close to the ALW's improved Jung's Super Regulator implementation mainly for the fact that them ALW's circuits sells for more than USD300 (for something that could only output 200-300mA of power).
so that will be biased, no? because one would be comparing a high end battery, to a simple low end regulator implementation.

and wondering, why not ask them all hailed audiophiles attend something like a research conference or research seminars instead?
maybe some of the worlds greatest audiophiles should attend the upcoming LAC2007 - the 5th International Linux Audio Conference which will be held in Technical University Berlin and tell the world of their subjective rave comments.

i'm sure they will be hundreds of Professors, Associate Professors, PhD holders and experienced Engineers attending his time-slot. and that it will be bombarded with all sorts of questions by briliant minds that WILL see even the slightest of weak-point and attack on that, until you're speechless.

First of all what kind of battery pattern that we are talking about?

AC > DC > AC or *DC directly powering the device?

*This is the one I am talking about.

PS: Octave Electronics and DIY paradise done that similiar setup before. May be somebody can go up their door step and shout "Batteries have cleaner floor noise are haoxes!"

This post has been edited by DAViS: Jun 13 2006, 02:01 PM

Did you mean AC adaptor instead ?
I thought DC = Battery ?

This post has been edited by Andy0625: Jun 13 2006, 03:00 PM