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OPA Moon HDAM revelations Pt 1-first impressions, plus updates - Page 2

post #16 of 48
Thread Starter 
Quote:
Originally Posted by mrarroyo View Post
I have the Jaycar Headphone Amp w/ matching power supply. My unit was built for me as a gift from an Aussie DIYer who highly modified the unit inclusive of a JLH additional board for the power supply.

It is a superb unit, does who wish to follow over 6 months of tweaks and improvements to the Jaycar Headphone Amp send me a PM. I will provide a link to the forum w/ the mods/improvements.
Hiya, mararrayo, that's great that you had one given to you like that, it IS a terrific little device isn't it!
I have since make some more mods to mine, which has basically become KHA I.5 now, it's been Franked in parts and become even more stunning, both in sound and in value. With the FrankenZero plus KHA I.5 together, it's got to be one of the greatest bang-for-buck combos out there! Not an expression I like that much, though really, value for money is something else. The FrankenZero goes way beyond such a concept and has become something else entirely!
I would love to know what mods you have made to your 'KHA', do you have that link there?
KHA I.5 has all the electrolytic caps replaced now with Nichicon Muse FA and Elna Silmic II versions, the greencaps near the inductors are now Russian PIOs of the same value and those nasty little ceramics have been vanquished and 47pF MKP WIMAs are in there instead. To say what was already a great little amp has been transformed, is almost understatement.
It's still burning in, both Frankie and KHA I.5 are at the 130 hour mark today.
My KHA II board is still waiting for Black Gates to arrive, mostly those fabulous .1uF NX series bypass caps that were brought to world attention by Matin Colloms a few years ago. And then there's the audio-gd power supply here, which I am in the middle of making the heatsink for now. I'll test it on KHA I.5, though it is destined for KHA II.
Look forward to seeing what you have done with your amp, mate!
S-Man

P.S. OPA Moon is still the greatest gift one can give to this amp, IMHO!
post #17 of 48
Thread Starter 
Quote:
Originally Posted by Rico67 View Post
i'll order 2 opa.
Could you help me to make a choice ?
I need one (2 singles) to put it in my XP 7 RSA amp and the other in my dac witch drive an tube preamp.
I was thinking about the Moon for the XP7 and about the Hearth for the dac.
Is it a good choice ?
moon 'll be instead of my 797 in the XP7 and Hearth instead of the 637 AP in the dac.

Thank you.
Well Rico67, I am not familiar at all with the gear you have there, so you need to ask yourself a couple of questions; is your system neutral in tone and if so, do you want to keep it that way? Or would you like to inject some sheer joy of life with a slightly warmer tone into your music? Both OPAs are awesome! OPA Earth in the DAC is fantastic and OPA Moon in KHA removes a slight touch of clinical-ness and adds sheer joi de vivre in an entirely natural and utterly addictive way. I find it superbly balanced in there. If you think that suits what you'd like to hear in your system, I can't imagine a better choice.
That's not to say OPA Earth wouldn't be fabulous in your amp too!
Buy both, if you can afford it, I did!

S-Man

P.S. I think your choice is good though, OPA Earth in the DAC seems to blend magnificently with OPA Moon in an amp.
post #18 of 48
Hmm
this thread has got my hands itchy to build the head amp kit
can probably get the kit from jaycar pretty easily, me being in melbourne

was thinking of buying an amp however the current exchange rates are hurting bad
this kit will probably be more fun to build anyway

however, where does one get the exotic upgrade replacement parts eg. nichicon muse and the like
post #19 of 48
I don't want to write too much about each of them until I've given them a few more days cooking, in case the the caps on them haven't settled. I'm also waiting on some better cables, as I only have one good pair here at the moment which I don't want to be continually moving around.

I'm going to gut my MKV temporarily so I can quickly switch HDAMs, as it's a basically ok test bed for them. With more cables, I'll be able to double-amp as well, which should get around some of the limitations of the MKV's lesser ability at driving my headphones.
post #20 of 48
sensay,
i 'll pass my order today for one dual hearth (dac) and 2 singles moon (amp ).

thank you for your advise.
I'm hezitating for one more "the Sun".
I don't know if it sound "too much" dynamique, because i have a sad experience with 737 BP witch were great for short listen session, but to much dynamique for long listening.
Some advise about the Sun ?

Just another question :
could you indicate me the standard time of burning for this type of Dac ?
does they need more than 150 hours to sound at there best ?
Cheers.
post #21 of 48
Thread Starter 
Quote:
Originally Posted by Hottuna_ View Post
Hmm
this thread has got my hands itchy to build the head amp kit
can probably get the kit from jaycar pretty easily, me being in melbourne

was thinking of buying an amp however the current exchange rates are hurting bad
this kit will probably be more fun to build anyway

however, where does one get the exotic upgrade replacement parts eg. nichicon muse and the like
Hi Hottuna, I can send you as many links as you'd like and PP is a great mine of information as well! I have built 2 of these amps and am in the middle of an even higher upgraded third (KHA II). They are well designed in the first place and can be taken to SQ far beyond the original 'sound'. Like Frankie, this amp is stunning value for money. It may take a little while to accumulate all the parts, but it is SO worth it!
Even with the standard 1% metal film resistors that come with it, she sounds magic, but you must replace every single one of those cheap caps. Power supply too, VERY important! Put the good op-amp that comes with it away and put OPA Moon in there instead and you have a superb amp for not a lot of $$$.
Hmm, if anyone wants pics I may have to start a new thread for KHA, if there's enough interest..
S-Man
post #22 of 48
Thread Starter 
Quote:
Originally Posted by Currawong View Post
I don't want to write too much about each of them until I've given them a few more days cooking, in case the the caps on them haven't settled. I'm also waiting on some better cables, as I only have one good pair here at the moment which I don't want to be continually moving around.

I'm going to gut my MKV temporarily so I can quickly switch HDAMs, as it's a basically ok test bed for them. With more cables, I'll be able to double-amp as well, which should get around some of the limitations of the MKV's lesser ability at driving my headphones.
Hi C, I am a little surprised by the MKV not driving the Senns, does it not do 300 ohms very well?
Um, wait til your Frankie hits the 140-150 hour mark! Streuth, mine took a dive for a day then just simply took off the next, into something a world apart from anything previously heard, tremendously exciting!
According to PP, there's another quantum shift to come yet. Gulp!
S-Man
post #23 of 48
sennsay: Audio-gd's C2C is far better than the MKV and about the same price, even if I replace the opamps with HDAMs in it.
post #24 of 48
Thread Starter 
Quote:
Originally Posted by Currawong View Post
sennsay: Audio-gd's C2C is far better than the MKV and about the same price, even if I replace the opamps with HDAMs in it.
Ok, I'm curious now, what do you like so much more about the C-2C? I really love the build quality of the audio-gd gear. I have one of their power supplies for KHA II and it really is the finest made circuit board I've seen; gold-plated through-soldering with excellent joins, thick copper tracks, quality parts, just terrific.
S-Man
post #25 of 48
sennsay, have you had a chance to visit the site for which I provided the link?
post #26 of 48
heads up for sennsay, sent you a couple of PMs
post #27 of 48
Thread Starter 
Quote:
Originally Posted by Hottuna_ View Post
heads up for sennsay, sent you a couple of PMs
Got'em, buddy. Replies in the mail. S-Man
post #28 of 48
Quote:
Originally Posted by sennsay View Post
Ok, I'm curious now, what do you like so much more about the C-2C? I really love the build quality of the audio-gd gear. I have one of their power supplies for KHA II and it really is the finest made circuit board I've seen; gold-plated through-soldering with excellent joins, thick copper tracks, quality parts, just terrific.
S-Man
The C2C has more grunt than the MKV, and more detail. The MKV is no real improvement over the HP amp built into my Lavry. The C2C is a considerable improvement.
post #29 of 48
An update: I've done a few more days cooking of the HDAMs. The Earth is, well, neutral, a little unremarkable. The Sun is more "in your face" with electric guitars and bass having considerable punch. The Moon, however has a wider and deeper soundstage, as if one had moved a few rows back. The presentation is more relaxed than the Sun. Going back to the Earth again, it seems to be somewhere in the middle, a little less forward than the Sun, but more forward than the Moon with a soundstage somewhere closer to the Sun.

Overall, I reckon the Moon is an improvement over the original Earth (Burson HDAM). Now to persuade someone to stick a set of singles in their M^3 so we can get an idea what they are like in higher-end gear.
post #30 of 48
Hi,
just to say you that i have implant 2 singles Moon in the RSA XP7.
(Fit like a charm thanks to the leads )
Result Is GREAT.
Detail, warm and a great improvement in term of homogeneity compare to all other ic dac than i have used.
it's a high end product for sure.
i try too the hearth in a usb dac, but as it's link to an amp tube i find sound isn't enough dynamique.
So i'll order the sun to try it.

Concerning a test with the M^3, i have all at home to do it, but it's an Alo doube mini M 3 ( i don't know if we speak about the same mini amp) and there is not a lot of place to implant it.
some advises ?
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