Heed CanAmp
May 17, 2007 at 8:47 AM Post #2,101 of 2,784
Quote:

Originally Posted by Blackbird Audio /img/forum/go_quote.gif
I like what Mr. Arroyo pointed out, as it was elegant in its simplicity about not everyone liking chocolate. I can't imagine for the life of me anyone who wouldn't literally like chocolate... one of the world's little wonders... but I get his point when applied to tastes and preferences.


Well said Dan.
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I'm enjoying my CanAmp very much, and at the same time waiting for my modding parts to arrive from Farnell.
 
May 17, 2007 at 3:07 PM Post #2,102 of 2,784
I have a pair of HD650 with the Equinox cable. My first headphone amplifier was a CIA VHP-1/VAC-1 combo. It worked very good with the HD650. The sound was clean defined with good soundstaging and bass.
I sold the CIA combo upgrading to a Headamp GS-1 with stepped attenuator. The sound with this amp was a lot cleaner with lots of detail, great separation and huge soundstage. All these came with a trade off. The overall presentation was more relaxed, very musical but the fun was not the same. Don’t get me wrong the GS-1 is great and there to stay. I just think the relax nature of the HD-650 combine to the one from the GS-1 is a little too much. So I am waiting for a pair of Denon AH-D5000 to give them a try with the GS-1.

Now to the real subject. Two days ago I received a Heed CanAmp from Profundo (Bob Clarke is a great guy!). I installed it in my bedroom system to start burning it in. Yesterday, after 24 of burning I couldn’t resist the temptation and gave it a little listening with the HD-650. The best word I can use is WOW! I have never have heard the HD-650 so alive! Yes the sound might not be so clean and refine as the one from the GS-1 and the soundstage not as big either but it was a lot of fun to listen to the music with this combo.
I was pleasantly surprised and very happy. The HD-650 will stay in my bedroom for good with the CanAmp.

I am expecting the sound to get better as the hours of burn-in keep going (Bob recommended 200 hours). Now my questions to this forum are: Should I upgrade some of the components inside the CanAmp? Which ones and with what? Should I try to put in an IEC for a detachable power cord so it can be upgraded?

Thanks.
 
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May 17, 2007 at 3:37 PM Post #2,104 of 2,784
Quote:

Originally Posted by musicman59 /img/forum/go_quote.gif
Now my questions to this forum are: Should I upgrade some of the components inside the CanAmp? Which ones and with what? Should I try to put in an IEC for a detachable power cord so it can be upgraded?


Some of the easier mods:
- remove the NE5532 opamp and solder a dip8 socket for ease of opamp rolling
- swap the power caps with larger value ones
- swap the 4 diodes to ultrafast
- swap the remaining 4 caps to audiophile-rated caps
- swap all 7 film caps with polyprops

(the above mentioned mods are called: the infamous PinkFloyd CanAmp mods LOL!)

Installing an IEC inlet is possible, but that involves drilling and hacking the backplate and installing a new psu to replace the stock snubber psu.

p/s: thanks for your review on comparing GS-1 and the CanAmp. So basically the CanAmp is more musical than the GS-1?
 
May 17, 2007 at 3:53 PM Post #2,105 of 2,784
Quote:

Originally Posted by yrh0413 /img/forum/go_quote.gif
Some of the easier mods:
- remove the NE5532 opamp and solder a dip8 socket for ease of opamp rolling
...
- swap all 7 film caps with polyprops



i would not consider these 2 easy mods, the space is tight around the opamps and the tracks are delicate. once the socket is in though opamp rolling is a breeze.

just about any polyprop that's suitably rated will be too physically large and require tricky mounting

Quote:

Originally Posted by yrh0413 /img/forum/go_quote.gif
Installing an IEC inlet is possible, but that involves drilling and hacking the backplate and installing a new psu to replace the stock snubber psu.


there's no need for a new PSU, where'd you get that idea?

you just re-wire an IEC plug into the existing PSU rather than wiring it straight in

imho the easiest mods are replacing the electrolytic caps, diodes and big power resistors
 
May 17, 2007 at 4:15 PM Post #2,106 of 2,784
Quote:

Originally Posted by d-cee /img/forum/go_quote.gif
there's no need for a new PSU, where'd you get that idea?

you just re-wire an IEC plug into the existing PSU rather than wiring it straight in



Haha i thought IEC inlets have special psu to pair with.
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My mistake
 
May 17, 2007 at 4:32 PM Post #2,107 of 2,784
I've just received the following e-mail from Alpar to pass along here:

Quote:

Greetings from Munich!

First of all thanks to all the interested members of Head-Fi for your patience with us once again. We appreciate the opportunity to address some of the issues and concerns that have been raised recently on the CanAmp thread.

Next we wish to extend our admiration to Mr. Asr for his beautifully written (and hopefully ongoing?) impressions on our humble little CanAmp. We feel honored that he is interested enough to invest his time and money in order to add to the wealth of other impressions already available here. He has certainly placed it among some most impressive company for his comparisons, some of which we have heard about from reputation but have not been able to experience for ourselves. While the CanAmp has been in production for more than 3 years by now, we are absolutely new to the idea of of the headphone world as a specialty market so we have much to learn still!

Notheless we can’t help but notice that nowhere in his postings does Asr address how the amplifiers under his review perform with entire pieces of music considered in whole, as opposed to component aspects such as “soundstage depth”, “low bass emphasis”, “articulation”, “attack”, “transparency”, etc, etc. These are all handy “audiophile” terms and while they certainly are useful to some degree we think they can only tell part of the story.

In fact, we have never conceived Heed Audio as an “audiophile” company. While we welcome such close scrutiny we still consider musical involvement and value for money to be our chief prioritys. My brother Zsolt considers himself to first and formost be a loudspeaker designer and so tries to apply that sensibility to every product we manufacture. And this past Feburary at the Bristol Show our UK distributor, Rob devised a 4-word slogan that perfectly captures our philosophy:

forget hifi
remember music

We note farther that Asr maintains an ambitious review schedule for publication, in addition to his writings for Head-Fi and also the very innovative “loaner program” he has arranged for other members , but we hope that once the CanAmp has run in to his satisfaction that he can take time out from equipmemt comparisons “in the moment”, pour himself a lovely glass of wine relax, and see where the music leads him!

And if he cares to e-mail me his address personally at: a.huszti@heedaudio.hu we will be happy to send him a bottle of one of our favorite Hungarian wines! But we understand of course, that in the end our wine might not be entirely to his taste or the CanAmp either. That’s how it should be. After all if there was universal agreement on products, most of us in this business would be looking for other jobs!

Which brings me to the matter that has caused us the most concern: the idea that CanAmps delivered today are somehow fundamentally different (or lesser even) than those that had been shipped nearly one year ago when Mike (better known as PinkFloyd) first contacted me and requested a review sample. One member here has gone so far as to speak about the need for an “investigation”.

I have discussed this at great length with Zsolt and he assures me that the design remains absolutely unchanged for better than the 3 years we have been producing the CanAmp. This of course extends to the components and their respective values and specifications. Zsolt continued to explain that there is always the possibility that may be slight cosmetic differences when parts are obtained from different suppliers and even these parts are subject to change in appearance without notice.

As a small manufacturer, these are simply the realities we have to live with. If a supplier delivers a transformer in black with wires protruding one time but in blue without the next, we are hardly in a position to argue with him about it so long as he can assure us that their values are exactly the same. We have never claimed to use exotic or “audiophile-grade” components, but the ones we do use are thouroughly tested for consistancy, both on the bench and in the finished product.

Naturally having read of the experiences of Mike and other adventurous CanAmp modders, we won’t rule out the prospect of introducing higher-grade components at some point in the future but this of course would make for a different product all together in regards to the pricing structure. The CanAmp was designed and delivered for an introductory price-point. While its wonderful that some here have determined that it might perform well above those modest intentions, we remain focused on maintaining its integrity as such.

I’d also like to discuss the idea presented recently that we have somehow been careless of quality control in our efforts to get CanAmps “out the door”. For anyone who has followed this thread from the beginning, it is well documented about our “growing pains” to meet the unexpected demand for this product. Since a big percentage of the orders have come from the U.S. we needed to source a reliable supply of appropriate transformers for North American voltage. Next, a few months ago a quality control issue arose when a capacitor was discovered to be reverse mounted. In the mean time we have made every effort to insure quality control. Our assembly is entirely in-house with Zsolt on the floor every single day. So if there is a problem, we have no one to blame but ourselves. Which is why we can confidently offer a 3-year world wide guarantee on every Heed Audio product. Obviously, we would much rather keep assembling CanAmps than having to fix them!

We are very excited to be at the High End Show this week, as we continue to introduce our new Obelisk range, which we believe will change peoples belief about what is possible from an affordable, yet entirely upgradeable, integrated amplifier (and whos unique non-DC coupled topology just might trickle down into an exciting new breed of headphone amplifier).

We can’t help but see this thread and the overwelming interest of Head-Fi members as an unexpected gift that has provided us with the opportunity to introduce ourselves in places we hardly could have dreamed about 20 years ago, when I first left Budapest (just as things were beginning to open up a bit) for Frankfurt and began distributing the likes of Rega, Roksan, Ion Systems, Spendor, Exposure, Royd, and Creek into Hungary under rather extreme circumstances. So we can only wish to build upon the confidence placed in us by all our new friends here.

Once again, I’d like to express our thanks to all the members here for their time and enthusiasm and all our dealers and distributors, especially Bob and Dan for representing us so very well in the States. As always I look forward to continuing our discussions with many of you by e-mail and telephone.

Yours Sincerely, Alpar Huszti


 
May 17, 2007 at 11:40 PM Post #2,110 of 2,784
Or Chocolate Chip Cookies and Heed
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May 17, 2007 at 11:40 PM Post #2,111 of 2,784
Thanks for posting that Dexdexter, a very enlightening e-mail. It's refreshing to see such an honest and earnest vendor, and I appreciate the feedback concerning the mini-reviews I've written. To Heed's credit, I agree I don't usually take the angle of reviewing components specifying the music being used, and that is something I will soon be changing, as I presently feel that not doing so is a discredit to the quality of amps in this range and above.

Concerning QA on the amp, it's also good to know that Heed hasn't changed anything, so any issues that I have with my unit are most likely due to personal bias and other relative references.

There has been much praise of the amp on this forum and I'm sure it's well-deserved, and I'll be doing my best shortly to find its virtues. There may have been a degree of being overcritical on it earlier, and that was partially due to the state of the other amps I have on hand at the moment. But of course that's not fair to the amp, and I will be "scaling back down" to ensure that future mini-reviews take that into account, rather than trying to compare to amps that are beyond its range.
 

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