feesh 0 Report post Posted March 9, 2008 Hi, i'm very new to this audio diy and i'm building a cmoy amp hopefully by the end of this week. i have a few questions however that i hope more experienced people here can help answer. i recently ordered free samples of the National LM4562 and AD8599 to mod my x-fi extrememusic. i was just wondering if they'd also work in a cmoy circuit? also, i'm oping to get myself some new headphones. my current sennheiser px200 is on the verge of its death. i was planning on getting a grado sr60. is that advisable? or are there any other headphones that anyone would recommend? or should i save up more money and get better headphones? if so, any recommendations? thank you so much in advice your humble newbie, feesh. Share this post Link to post Share on other sites
heady 0 Report post Posted March 9, 2008 I am not electronic expert lah but seems to me the LM4562 is more suitable than the AD8599. This is because the AD8599 needs +/- 15V supply while the LM4562 can work at lower voltage. As for headphones, if you like the Grado sound, I understand the SR80 is a better buy than a SR60. Alternatively, looked at the Alessandro series which are modified Grados. Above all, for headphones, remember this, YMMV. Regards Share this post Link to post Share on other sites
alvin1118 0 Report post Posted March 10, 2008 Some said AD8599 is as good as OPA627 (from an experienced uncle). havent had chance to try it out yet Share this post Link to post Share on other sites
feesh 0 Report post Posted March 11, 2008 I am not electronic expert lah but seems to me the LM4562 is more suitable than the AD8599. This is because the AD8599 needs +/- 15V supply while the LM4562 can work at lower voltage. As for headphones, if you like the Grado sound, I understand the SR80 is a better buy than a SR60. Alternatively, looked at the Alessandro series which are modified Grados. Above all, for headphones, remember this, YMMV. Regards thanks heady. i will install the lm4562s when i have the time. they just came into the mail today. cant wait! =D Share this post Link to post Share on other sites
heady 0 Report post Posted March 11, 2008 thanks heady. i will install the lm4562s when i have the time. they just came into the mail today. cant wait! =D Hi, post your impressions of the LM4562 ok? Share this post Link to post Share on other sites
alvin1118 0 Report post Posted March 20, 2008 (edited) doing a A/B test of AD8599 and LM4562. Equipment: (1)USB DAC->RA1 Clone->Audio Technica A900 (2)USB DAC->ICUTE->Amp->JPW Bookshelf Speakers Revise Review: AD8599 favor for high and detailed sounding. While LM4562 is more dynamic. *review are based on personal listening through a very limited set of equipment, so, very subjective Edited March 29, 2008 by alvin1118 Share this post Link to post Share on other sites
alvin1118 0 Report post Posted March 29, 2008 review revised >< Share this post Link to post Share on other sites
Guest peranders Report post Posted May 13, 2008 (edited) Notice that national has renamed the LM4562 to LME49720 E stands for enhanced btw but they are identical. Edited May 18, 2008 by peranders Share this post Link to post Share on other sites
chesterqw 0 Report post Posted May 17, 2008 SOIC... you need an adaptor... and BTW, dun go to SLT looking for DIP-8 audiophile OPAMPs... out of my list of 4, i can't even get one Share this post Link to post Share on other sites
Guest peranders Report post Posted May 18, 2008 (edited) SOIC... you need an adaptor... .... which I happen to have They are best in the world http://sjostromaudio.com/pages/hifi-projec...to-dil-adapters http://www.sjostromaudio.com/pages/hifi-pr...to-dil-adapters Edited February 9, 2011 by peranders Share this post Link to post Share on other sites
alvin1118 0 Report post Posted May 18, 2008 yah you'll need adapter/converter for the SOIC opa.. i start loving AD8599, sound good with my ICUTE & RA1 Clone SOIC -> DIP8 Single -> Dual OPA Share this post Link to post Share on other sites
