plus than a necessitiy..u havent heard a proper amp then..

renovatio..u really havent heard a good amp yet, thats why u said its a plus than a neccessity..a chain is only as strong as its weakest link, but i guess ur gonna flame me back on this statement.

i also dun haf any warranty card...this one i need to clarify with DAvIS! And im sure all the other fella who got theirs from davis has no warranty card..

hint hint...hint hint..lookie at theDocs siggie..hint hint..

Akabane got urself a HD555 edi ka? U wont go to Philips ever again if u hear em..ehem ehem..hint also to sumone

aik, sold xd cos u replied me late..and in ur reply also u said ull think about it neways.

aik dodo..wat ever got u to get a HD555 again? saja2 boring or interested..haha, do tell!

ya ya...you spewed the truth out so loudly making me more..eager to change my gear again..sabar sabar..haha! 595 is better than 555, but nothing to shout about punya difference..aiyo..

yeah, i know, thats why la..hehe! if the difference is rm200, its worth it, if its more than rm300, scrap it..i got my upgrade for less than rm100 so no prob i see

The difference is actually quite significant, but u would be hard-pressed to decide which is better, i wont miss the 595 that much if i had to use a 555.

This post has been edited by ijan: Aug 24 2006, 11:08 PM

This is where ur wrong, even a basic CMOY does something, but minimalist style, u get higher the amp chain u get exponential upgrade to the 595 SQ. test n tried with various amps, and un-amped with various sources.

IMHO, better amp first, then get a new headphone, cos witout an amp (note to oneself, not all headfons or all sources need an amp) u wont see exactly how ur headphone performs. U might get a better sound from ur amp+hedfon compared to say upgrading to a hd650 without an amp <-- tis u can ask around, but most lurkers here in lowyat jus dun care to comment, but they know.

However, HD595, get a high current amp. u wont benefit na~da from unbuffered opamp to make u say ooooh-aaahhh.

I haf other opinion, but i wont voice them out over my humility:D

It is commonly accepted that high impedance or hiZ phone need higher voltage to werk, ohms power law, P=VI, I=V/R, thus P=V^2/R and in current form P=R*I^2. For the same amount of power (as defined by system synergy of amp+headphone), hiZ would require more voltage than current. EG, two headphone, 1=200ohm, 2=50ohm. For an input power of 1W, headphone 1 would require 10V and 50mA while headphone 2 would require 5v and 100mA to produce the same output power, well, technically. So theres the reason for a high current amp. But this is a generalization and shoud not account any headphones, but a rough idea.

Extra useless info if u guys are more technical..


So, u are asking improvement with the HD555. It can be easily driven, no fuss there, 50ohm is not much (but SHP895 32ohm acts like a 500ohm megaphones, hard as hell to drive, so no generalization). I dun want to explain more than i should, so make a long long time ago past experience as a point, i had a HD555 before and tested them from my unamped emu 1212m output (this card was never designed to drive anything directly, thus the extremely low level of volume n clarity). Paired it with a CMOY and the volume gets ramped and all the details are there, visible since before, the small detail variations in the signal was not enough to move the transducers. There was major improvement, but maybe its because the original output is just weak. After a while, i procured sum ic discreet current buffer and paired it up. i laughed my heads off due to the VAST difference. The bass is very impactful and everything else has just gone three nothces up!



About my humiliation, not that i am a solid state guy, i love tubes, but honestly i have never tested them, but warnings were thrown at me not to waste my time on them..hehe! This i hope is no offence but to me, a pure solid state amplifier with a highly bias output stage is the BANG! for example the PPA-V2 and M3. Actually a PIMETA works quite well. A short circuited LDM+ or PA2v2 over HD555 can only give a 60mA current (if the battery can supply tat and thus as explained, these are only super low voltage opamp based amplifiers, thus wat u get are low voltage and lower current.

Aiyo..wat a long post..i blabber to much, sorry yea! Im sure sumone would come n flame me, but feel free to do so, i wont fight back

P/S, yeahs 4.1, hows ur first experience with the HD555? it aint comfortable but its tat musical for that price range

This im not that knowledgeable, its related to audio engineering which is way different than electronics. But from an electronic POV, the frequency response of the LD2+ is respectable, power handling capacity is quite high, meaning the main purpose of the LD2+ aint only for headphones and seems to be focused more on HiFi setup either as a pre-amp or small power power amp.

HOWEVER, look at the THD, its quite bad with high impedance phone when higher current is needed (translates to higher volume, dynamics bla bla bla). Seeing it from a HD555 50ohm impedance, its impossible to say the THD the 555 is seeing deue to THD unlinearity, needs a plot of the THD in order to know, but in no way is it going to be less than 0.1%. 0.1% THD is still not that bad, audio opamps usually haf their THD in the 0.00001% or smaller region, this might give sum echo of unwanted signal in the output, but maybe thats how tubes are. If im no mistaken, tubes haf THD in the even number while ss has them in odds, and tubes are naturally more distorted (higher THD) than its SS brethren.

So in any other way, LD2+ seems to be good for a tube, cos i dun really know how tube response, u haf tow ait for TUBE guys to come in. For a SS to haf that specification, that SS amps would not be the better of anything. But in the end, its a mtter of preperences, sum high end amps distorts the signal n ppl like it more. the 1212m almost pure, no coloration and distortation, yet ppl find it bland and boring.

the former.

U haf a HD650 already, wow anyways, if u haf one, why set ur max at rm200, thats bull! U shud get an 0404 at least. Unamped HD650 is badddd.

My point exactly, try it amped (i mean amped properly, no micro mini or pocket stuff amp here!) and u would take back that statement.

Tell ur boss la, got sum big bux on a high end headphone, need to get an almost same big bux to get a source and also roughly the same big bux to get an amp, its normal lerr. RM200 for a source, then ur boss shud haf stucked with HD555 and lower.

come on, a helping hand is like RM10-15 only lerr, unless ur talking bout real helping hand by rental u scrape ur solder by using the fin, ur tip wont last long la kawan.

U really need to know the whole fundamental of a source, amplifier, output thingie. Wonder why are u so affixed to a HD650 when u dont know wat a DAC is and ur asking weird question. My advice to you, take turn in life slower man, no need to rush. Look up ur information up first slowly, test them out then decide, unless ur filthy rich then why bother wasting money on low end cans as starters when u can own all the flagship models of all house sound.

Regarding ur question, a DAC supplies the analog signal (the audio) that u listen to. It converts digital data, such as read from CDs into the original analogue data that we listen too. the DarkVoice is an amplifier, it amplifies or boosts the strength of the signal to power up cans effectively (its more complicated than that). A cd player for example has a built in DAC, a soundcards does too. u really need to understand the concept.

here come the party popper, haha~ 20 years investment man!

everyone is predictiing everyone to get K701 nowadays...overhyped by the seller...hahahaha! but its good hype, well, its good fact, not hype