jtfoo 0 Report post Posted April 26, 2004 It is based on the Zen Headphone amplifier from headwize. http://headwize2.powerpill.org/projects/sh...llerano_prj.htm Had been listening to it for about a week. This amp drives my GradoSR125 very well. Much better than the PPA driving the Grado,but doesn't sound too exciting on the Beyer DT880. So for Grado, this is my fave amp yet. Share this post Link to post Share on other sites
jtfoo 0 Report post Posted April 26, 2004 This the overall.. Share this post Link to post Share on other sites
jtfoo 0 Report post Posted April 26, 2004 (edited) The porn. Very messy cabling.. I did made an effort to shield the transfomer from the amp PCB. Those heatshinks get very hot to touch after 20mins.. Some details on the components, PCB : From forumer Digi01 whom can be found at headfi, headwize or diyaudio forum Caps : PSU - nichicon generic . PCB - Panny FC, Elna Silmic, and Solen for input coupling. Cable : Power and grounding(green cable) - Generic copper wire stripped from computer power cord. Input cable: Cat 5 cable from Belden ???? Output cable : Stripped from Kimber 4tc speaker cable. Volume : 10K Alps Blue Others: Ferrite sleeves on all power cable, Filtered IEC socket Edited April 26, 2004 by jtfoo Share this post Link to post Share on other sites
Blues 0 Report post Posted April 26, 2004 Looks menacing!!! I love the industrial and yet 'don't come near me, I will bite' look well done! Share this post Link to post Share on other sites
av98m 0 Report post Posted April 27, 2004 Yeah, love the rack-mount chassis! Share this post Link to post Share on other sites
hacknet 0 Report post Posted April 27, 2004 wow! just a points.. haha... the sinks are a little small... try using the chassis to dissipate some of the heat. looks cool, how does it sound? Share this post Link to post Share on other sites
jtfoo 0 Report post Posted April 27, 2004 (edited) I did had the idea of using the chassis for heat dissipation at 1st, but the chassis I got has rough surfaces. rough surface doesn't give full contact area for adequate heat transfer. Those heat sink I got are the largest I can find that is able to fit into my casing. Not an audiophile, so I can't describe the sound in any audiophile terms. When I listen to rock music, this amp is very exciting with the Grados. I guess it drives low impedance headphone well. High impedance like my Beyer DT880 sound rather dull. Does my Grado sounds better on the Zen than PPA? A definite yes. Edited April 28, 2004 by jtfoo Share this post Link to post Share on other sites
