This test was done using 1/4 jack, which i think is more like 15 mOhm (I can try to locate its datasheet).   btw this unit also has 1/8 jack wired in parallel, I can try to rerun these tests in a different configuration..   As for the crosstalk being better for 330 Ohm vs no load at...

  Speaking of those observing much worse RMAA results/crosstalk ..   These are all DIY builds, and there is no quality control in a normal sense. Parts could be different, build quality can suffer, test setup itself could create additional crosstalk.. I'm not saying this was the case, but...

  Quote:     Ok, let me share mine..   Just not to get into this 2ch vs 3ch debate let's take a passive-ground amp: CK2III (I have one in my headamp collection). Test setup should be straightforward in this case.   My CKK is a pretty standard (and economical) build, with a...

  Is it A/B testing circuit?   Just in case you plan to test 3-channel beta vs 2 channel O2, you might need 3 pole switch (to switch between real and virtual ground).  

      I can second that. Volume-matching is absolutely necessary in any A/B test. Louder amp will is more likely to be perceived as sounding better. When levels are carefully matched, you might be surprised how close they all sound.   Don't get me wrong - the difference is still...

      In my experience: Cost of parts (including shipping) is just way below that. However, if it is someone's first build - it might get expensive considering cost of necessary tools, lack of experience, parts that were missed (not ordered) initially..   Plus casing this thing up...

Thank you very much Ham Sandwich,   I did check resistance - seems perfectly fine for both - 296 Ohm   I'll try to open them up and inspect carefully.    

Hi ImitationOfLife,   It's an old thread, but I wonder how it worked out for you.. Did you manage to test/replace the driver?   It looks like I have the same problem which I just noticed yesterday. There is annoying buzz in the right driver which is noticeable when playing low tones...

#109 paid

Count me in. m3, mini3, ckIII, jisbos, y1, beta22 etc.. Thank you, Ti

I have my 1212m modded this way (four coupling caps are bypassed). The card has stock opamps in it. I measure a very modest DC offset at the unbalanced outputs: 7.6mV and 1.9 mV for the left and right channel respectively. At the output of my headphone amp (M-cube) connected to the EMU at the...

Quote: Originally Posted by MrSlacker If anyone needs a ride from Brooklyn, let me know. MrSlacker, you've got a PM. Thanks

Quote: Originally Posted by erikzen My CD player has both optical and coaxial out and I'll be using the optical. You're welcome to park next to me and grab a feed from it. Of course, I've never tried to use both outputs at once. I assume it should work. erikzen, thank you very...

I’m lucky to notice this event BEFORE it actually happened :-) I can bring Sennheiser HD-650, Audio Technica ATH-M50s, DIY CK2III headphone amp, and a DIY AYA DAC (rev 2.0b). AYA is a nice sounding piece of equipment but unfortunately I do not have a decent digital transport to match its...