Jump to content


O2 Headphone Amp (teaser)


19 replies to this topic

#16 kwhv

    Junior Member

  • Senior Member
  • 57 posts

Posted 11 February 2012 - 12:38 PM

Anyone getting distortions at high gain?
Modded Pioneer DV-380 --> Schiit Lyr --> Audeze LCD2r1/r2/3 (VDH D501 hybrid cables)
iBasso DX100 --> Audeze LCD2r1/r2/3 (VDH D501 hybrid cables)

#17 nekatrall

    Junkie

  • Senior Member
  • 426 posts

Posted 11 February 2012 - 11:21 PM

hehe mine finally can post some pics

IPB Image

special back panel
IPB Image
IPB Image
current rig
(portable rig) cowon s9 + tf10, monoprice 8320
(portable amps) 18v cmoy, O2 amp

(home rig) thinkpad w520 > ssmh > headphones
custom mod headphones in beats body, pioneer se305, goldring dr150 (all 3 with interchangeable wires)
ath-es7 modded 18awg spc, skull candy aviators, creative aurvana live(denon ahd1001 modded), DT48A
with loads of diy wires

(clip on)
Ksc 75, em7, dunu cx 60-II

past love
d2 modded to d2+
fiio e11, a47 amp, creative usb x-fi 5.1
sf5p, tf10p + hand made mil-spec spc,meelec m9, ba200, CIEM (tf10+sf5p)(missing)

#18 jmwreck

    Junior Member

  • Member
  • 35 posts

Posted 06 April 2012 - 06:44 PM

QUOTE(nekatrall @ 11 Feb 2012, 11:21 PM) View Post

hehe mine finally can post some pics

IPB Image

special back panel
IPB Image
IPB Image


I only see this now, very nice bro laugh.gif
view my webpage
IPB Image

Sansa Clip+ rockbox, Fiio E5, Cmoy Hybrid, O2 Amp, Koss Portapro "kramer & quarter mod", Superlux 668B, ATH FC-707, Meelec M6 with Comply T500, SPC cables with neutrik and amphenol plugs, Canare cables with Palics plugs

#19 ElephantAudio

    Junior Member

  • Member
  • 22 posts

Posted 16 June 2012 - 01:43 AM

Just got mine and great, I'm only wondering if I should upgrade NJM2068D amp chip for NE5532AP, been told at standard gains it has lower distortion but since I'm not at all an electro technician, need feed back. I'm basically using the amp with Ultrazone Pro 900. Since I also have two cMoy v2.03, I'm thinking of upgrading actual chip on one with NE5532AP if it fits and sound...better?

Edited by ElephantAudio, 16 June 2012 - 01:45 AM.


#20 nekatrall

    Junkie

  • Senior Member
  • 426 posts

Posted 18 June 2012 - 02:44 AM

according to the BOM of nWavguy, NE5532AP is noisier as tested by him

but im unable to testify
im currently using mine with low power opamps as stated by nWavguy bom
OPA2277PA, TLE2062CP
said to have more noise and distortion

it is slightly more noisier but almost inaudible when in use,
distortion is also not noticeable

i can only suggest that u try
current rig
(portable rig) cowon s9 + tf10, monoprice 8320
(portable amps) 18v cmoy, O2 amp

(home rig) thinkpad w520 > ssmh > headphones
custom mod headphones in beats body, pioneer se305, goldring dr150 (all 3 with interchangeable wires)
ath-es7 modded 18awg spc, skull candy aviators, creative aurvana live(denon ahd1001 modded), DT48A
with loads of diy wires

(clip on)
Ksc 75, em7, dunu cx 60-II

past love
d2 modded to d2+
fiio e11, a47 amp, creative usb x-fi 5.1
sf5p, tf10p + hand made mil-spec spc,meelec m9, ba200, CIEM (tf10+sf5p)(missing)