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Review: Violectric HPA V200 amp - Page 178

post #2656 of 2660

To all Mac users with the internal USB-DAC card installed:


Starting with Yosemite (Mac OS X 10.10) Apple requires all kernel extensions (i.e. your DAC driver) to be signed. Unfortunately, Lake People / Violectric have not updated their driver with the right signature yet. As a consequence the driver will not be loaded by the OS and your music will sound funny to say the least. If you already updated to Yosemite and have no way to roll back to the old OS version you can circumvent the problem by disabling the signature check with the following procedure:


- Open a terminal (open Spotlight and type "terminal", a text console will appear)


- Type the following: sudo nvram boot-args="kext-dev-mode=1"


- Press enter


- Type in your admin/root password and press enter.


The next time you plug in your Vio the driver should be correctly loaded (maybe reboot if not). You have to repeat this procedure after resetting the PRAM of the Mac.





PS: When you look around the internet you will notice that Violectric isn't the only company without up to date drivers. Apparantly a lot of USB DACs suffer from the same problem since the drivers are usually supplied by the chip manufacturers (Tenor in this case) who can't be bothered to sign their drivers. If you haven't updated to Yosemite yet I suggest you hold off until the situation has cleared.

Edited by nicooo - 11/19/14 at 8:09am
post #2657 of 2660

Hello Everbody.


I like to inform you about our new (higher) prices for selected models valid from 1st of January 2015

The listed prices are the European prices without VAT.

Please aks Arthur Power from   www.violectric-usa.com  for detailed US prices.

New prices from beginning of 2015:

V200 = 756,30 Euro

V220 = 1176,47 Euro

V281 = 1596,64 Euro

All other Violectric products will have the current prices which are stable since 2010 !


So, if you want to save some money, dont hesitate to order THIS year.

We expect some delivery delays in the beginning of the new year ;-)
Please note that in case of an order you will not be charged with any (pre)payment until your unit is ready to be delivered !!

Also we grant your right of revocation which can be performed by simply not paying the pro-forma invoice which is send to you when your goods are ready to be delivered.

Of course (in case you changed your mind) it would be more polite to inform us in advance to ease things and not to produce office operations in vain ...


Best Regards


Fried Reim
(CEO of Lake People and Violectric)

post #2658 of 2660

I'm considering buying a V200 amp for my K501.. Yesterday I bought a Grado SR225e headphone.


Anyone heard the Grado 225 on the Violectric?


-edit-  just ordered me a V200 :D

Edited by Quinto - 12/15/14 at 9:58am
post #2659 of 2660
Originally Posted by Quinto View Post

I'm considering buying a V200 amp for my K501.. Yesterday I bought a Grado SR225e headphone.


Anyone heard the Grado 225 on the Violectric?


-edit-  just ordered me a V200 :D

When I bought my V220 the K501 were the first to get plugged in. It's jaw dropping how much those headphones scaled. Stayed with those cans for 4 days exclusively. No "need" to get more "music" out of that!


Listening to anything with horns on those babies is just pure magic. I'm now certain that those headphones need a special amp to show all they can give.


On Grados there really wasn't anything miraculous going on. They just sound great as always. 


Of course, there are a few differences between the V200 and a V220 but I don't really think sonically it will be a night and day difference.


Please share some feedback later. I'm curious :bigsmile_face:

post #2660 of 2660
FWIW, I've found the V200 to be an excellent match for K702 and K550. It's my go-to amp for the K702 ~90% of the time. With recordings that are almost flawless, I prefer the internal headamp in the Oppo105.
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