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New Xin Reference Amp by Dr. Xin !!! - Page 6

post #76 of 558
5/18/07 at 9:45pm
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Quote:
Originally Posted by nickknutson View Post
mrarroyo, do you have the amp in your possession?
No, it is on its way. Should arrive by next Tuesday, May 22.

Edit 1 at 9:30pm on Friday 5/18/2007.

Dr. Xin sent me an email the amp was resent so I should get it tomorrow. YEAH!!!
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post #77 of 558
5/18/07 at 9:48pm
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Quote:
Originally Posted by roastpuff View Post
We'll see.
Well with all due respect IMO the current Supermicro IV is the best period. This should blow everything and then some.

Ray's amp are fantastic, he is a great guy with great service and super fast shipment. His amps are built like a tank and sound great. I currently own an SR71 and a Tomahawk. However as I stated above the current Supermicro IV sounds better so there is no guessing since it has already happened.
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post #78 of 558
5/18/07 at 9:50pm
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Originally Posted by aluren View Post
wow, so that's what he's doing! and we all thought he was out sick!
For the record he was sick.
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post #79 of 558
5/18/07 at 9:52pm
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Quote:
Originally Posted by Filburt View Post
I see what looks like BKA on the TSOT package, which is what AD marks the AD8615 with. Supermicro uses the same chip. I see four of them, though, whereas on the Supermicro I only recall seeing three (which made me wonder where the fourth channel was). Other than that, this doesn't have a DC-DC converter (MAX1796 on the Supermicro), which the Supermicro/Mini use.

Did anyone actually compare the Supermini/Macro to the Supermicro using like op-amps? The only comparisons I'd seen were people comparing default configurations, which doesn't exactly provide much in the way of evidence for effective comparison.
I did with the Supermacro LE and the result is that the Supermicro IV still sounded better (pre 4/11/07 mods on both amps). Also the current Supermicro IV is closer to a 3.5 rather than the full 4 channel, that is what you are seeing.
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post #80 of 558
5/18/07 at 9:54pm
what the hell is 4 channel, answer me
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post #81 of 558
5/18/07 at 9:54pm
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Quote:
Originally Posted by kaushama View Post
The supermicro being best of the Xin line is bit of a misnomer! Before the last series of tweaks all of channel IV amps had problems in their power-supplies. Early version even had oscillation.
The defect was least manifested in Supermicro due to its inherent simplicity. That is why, it had best SQ! After correction of power supply problems, I think all Xin amps sound same.
But I think new layout may bring out more performance as it augments the simplicity of MICRO layout.
IMO even after the 4/11 mods the Supermicro IV was king. Dr. Xin prefers this new amp, I will try to see how it compares. May even send it out to a couple of guys I know to get their feedback.
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post #82 of 558
5/18/07 at 10:02pm
Quote:
Originally Posted by mrarroyo View Post
IMO even after the 4/11 mods the Supermicro IV was king. Dr. Xin prefers this new amp, I will try to see how it compares. May even send it out to a couple of guys I know to get their feedback.
Noo! You've sold your ER-4S! But you definitely can send it out to a few guys like Vorlon
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post #83 of 558
5/18/07 at 10:04pm
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Quote:
Originally Posted by cooperpwc View Post
Personally I couldn't be less interested in op amp rolling. If this Reference version is his best configuration, its simplicity is its great strength IMO.
But there is still the power issue for high ohm headphones. It might have enough gain for 600 ohms - my Bithead does - but that's not the same as providing enough power to drive the cans properly (which the Bithead does okay but not great).
Still this looks to really have potential. How many years will it take to get one?
This is a tough question to answer regardless of the amp. A lot has to do on what is loud for the individual listener.

For example many here have stated that their Tomahawk can not drive their HD600 with the gain set to high to satisfactory level. Notice they say satisfactory, let alone loud. I on the other hand can leave the Tomahawk on low gain and it drives my DT990 250 ohms to my listening volume using an iModde iPod with the volume pot at 10:00am.

So basically only you can answer that question.
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post #84 of 558
5/18/07 at 10:06pm
Quote:
Originally Posted by Thelonious Monk View Post
what the hell is 4 channel, answer me
If you do a little searching I think you'll find your answer. It certainly has nothing to do with being fully-balanced.
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post #85 of 558
5/18/07 at 10:08pm
mrarroyo, have you compared the Supermicro to the Supermini and Supermacro when each were using AD8615s in similar configuration? (you'd probably have to use TSOT-5 to DIP-8 adaptors; AD8616 might be able to sub in, though, but would need SOIC-8 to DIP-8 adaptors)

I ask because I'm not sure how one could objectively compare the Supermicro to the other amps without eliminating this variable from the comparison. I've asked some people about this and haven't yet found someone who has done such a comparison, so I thought I'd ask you.
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post #86 of 558
5/18/07 at 10:08pm
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Quote:
Originally Posted by oicdn View Post
Why does he cheap out on a case??? Any idea on price?
Hi Nate, this issue comes up all the time. Not only with amps but also with say Grado. Basically there are two camps, one that wants an expensive/nice storage box for their grados (more money) and others who want a functional box with the money saved or used for a better product. I am for the most part with the second group.

The case Dr. Xin is using here (same as on the Supermacro) is a very functional case and very sturdy. It is not as nice as the one used in the Hornet, but that case if you buy a second one goes for about $50. It is beautiful but some of us rather save the money. Just my opinion and of course many will take the other side of the fence. Which is with me.
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post #87 of 558
5/18/07 at 10:11pm
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Quote:
Originally Posted by ath View Post
...Like I said earlier, too many people are waiting for their amps patiently. I really wish Dr.Xin focus on the back orders for now.
And as I posted earlier:

Quote:
I have to say that if I had a back order of XYZ amps and I could manufacture 1 per hour I would be tempted to work 12 hours a day to ship as many as I can. However that still leaves a couple of hours a day to think/theorize/dream. So this is what Dr. Xin came up with!
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post #88 of 558
5/18/07 at 10:12pm
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Quote:
Originally Posted by kaushama View Post
To me it seems to be the same enclosure of SUPERMACRO!!
It is, just different openings/markings on the faceplate.
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post #89 of 558
5/18/07 at 10:13pm
I don't know how using the current case that is used for the Macro series is going cheap. Mine has been dropped, stepped, taken around the world and otherwise accidently abused and it is fine. No cracks, no real flaws and it still works so how is that going on the cheap? I guess the price could be bumped up to 350 with a really nice thick custom case but would that make it work, sound or last longer?
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post #90 of 558
5/18/07 at 10:15pm
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Quote:
Originally Posted by Kabeer View Post
Does anyone have a picture of a supermacro and supermicro side by side, so we can visually see the size difference?

Thanks
Click on the thumbnail below to view the full size pic.

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