sadly nope....u will need at least cdp source or u.s.d.2k dac pair with laptop
for amp, most recommend amp is SPL phonitor/auditor or tube amps like 2 x6SN7 or 4x 12ax7 at least to make the hd800 truly spectular

hm..for the price. you should buy that HD600.
it's cheap for that price provided the condition is ok.

it's true that before this. the version with cooper rings sounds the best, compare to newer version (during 2002-2008) which removed the cooper rings while still mantain black silk screen.

according to my experience. it is still true for HD650.
however. before launching of HD800.
i personally tested a unit of HD650 with silver colour of acoustic silk. and that's the best sounding HD650 imho. and i personally bought a pair of it.

so .. imho. i will personally rate
Silver silk HD650 > Copper ring Black Silk HD650 >>>>>>>>> Black silk HD650 without copper ring.

newest HD650. with silver silk. doesn't suffer any viel problems, less boomy compared to black silk HD650. faster sound signature. and imho more neutral.
and direct drive of this version of HD650 is possible even though connect it to a notebook soundcard.
while previous version HD650. without proper amping. is very very muddy and slow.

and i personally very salute to sennheiser company. that they continue to upgrade the HD650.. even though their new flagship is going to release. and imho. those who wanna keep a HD650. now is the time. because this newest version sound the best across 4/5 types of variation HD650 i ever heard.
some even with paper like acoustic silk which is slightly brown in colour..

Someone from another forum I talked to had a HD580 and a HD600 - the original version with black silk screen and a brass ring around the inner coil. offer to sell at RM620 and RM700. Sounds like a good deal. Should I get hold either of this? I remember PcWork commented this being the best sounding of all??

These are pictures he sent of the HD600.

u cannot only cincai go for hd800
+ u wont know the pairing well 1st even u go for just the cables upgrade...matching is a b!t@^ with it
u will get headache/a lot of holes in wallet just to pair this monster with source and amp....
later u will blame that yur source and amp not up to task....that is the problem with high end headphones
unless u r keen into focus yur heart and attention into playing headphones and have deep wallet then it will reward u in near future....but not all ppl r keen into playing ...they rather go for hifi and it is about the same price as amp/dac/ hd800 setup....think carefully whether u wan to jump into it 1st or not....

u just need a recable hd800 ...trust me ....when u listen back to low models...then u will know wat is missing with it
in my case, hd600 doesnt have the grand imagining as hd800 bass very lembik and missing body...
my favourite hd650 after didint listen for quite a while, listen back and found too much mids colorations and lower register not as tight as flagship
but that is driven by balanced setup and recabled .....maybe some time passed, i grew accoustomed to my hd800

i was quite suprised at 1st when i played my cds through it as well but i can agree it gave the details and sonics wise as good as balanced setup itself
maybe the balanced r 20% r improved on the noise level,body and timing as well...but somehow it is quite a revealing experience for me since it has almost benefit as the balanced itself....bass and imagining wise the balanced setup excel at and the symphony signature (pcwork's own hd650) i tested just using his puny Govibe amp almost cover the major faults for hd650.....maybe that why it doesnt have bass layering as refined and impact as good as my balanced setup...doesnt rolled off when bass hit and shook my cheek effortlessly but there is a room for improvement if pcwork wan to come out with V2  hahaha
anyhow do try it out at Jaben and frankly it is no brainer for it's price and performance ratio...maybe i down to honest fella when it comes to reviews but i dun favor anyone when giving reviews...somehow pcwork and i able to share common idea and sound signature wise 

anyhow back to hd800, treble is associated the upper frequency...u r saying the the hd800 is not detail enough or bright enough? ><
timbre is mostly refer to body or upper mid to lower frequency itself....i think u mixed both up....
most hd800 has crazy amounts of details even omega Stax bow to it...lol it doesnt have the body, lower smooth range as good as omega but 3d holographic and soundstage hd800 r on par with Omegas....
but i still finding a suitable suitor for my hd800...the silver/gold is good but it's lack body and ahem ( i am too fussy most probably) very damm thin mids which go haywire when i played vocals but great for everything i throw at it
plan yur budget wisely 1st, get something that maximized everything in 1 shot....
sieveking aledi usd100 ++ or more, try to get something will benefit rest of chain from downward to upwards