[alota]

Hello head-fiers, i opened this thread to present an amplifier designed by an italian person, Alessandro Fiori, that really like electronic stuffs and headphones.
I don´t understand nothing of electronic and i asked to alex if it was possible to share this project on head-fi
alex say yes. this project is free of course.
i will post link of the schematic diagram and phots of mine(my friend, the same that have built my b22, is building one balanced vhf-1 to me)
 
electric diagram:
http://farm5.static.flickr.com/4152/5210445322_3f5725e726_o_d.jpg
stereo with one board:
http://farm6.static.flickr.com/5163/5210445118_ab00560b30_o_d.jpg
bridged with rca input:
http://farm5.static.flickr.com/4154/5210444844_0fc54439a1_o_d.jpg
bridged with xlr input:
http://farm6.static.flickr.com/5161/5210444992_d42d72d354_o_d.jpg
assembly plan:
http://farm5.static.flickr.com/4122/5222165694_2bf8a4f9ef_o_d.jpg
gerber file:
http://aviostar.net/vhf11e/gerber
part list(in italian, sorry):
http://aviostar.net/vhf11e/partlist
some photos of mine(in assembly)

enjoy
aldo
p.s.:sorry for my poor english

 

[alota]

 

[bcg27]

How does it compare to your B22?

 

[alota]

Quote:

How does it compare to your B22?

hi, i  have not listen yet.
soon i will post my impressions and the differences with hte beta
in the vhf-1, the power increases with the impedance.
i think that with the impedance of 32 ohm the power output is 200 mW, with senn akg etc around 800mW-1W

 

[alota]

hello, yesterday i have listened the vhf-1(unbalanced mode) with the edition 10.
the amp is very musical, with a natural reproduction of the instruments and a good headstage.
from this point of view, i don´t regret much the beta.
otherwise, this amplifier don´t have the body and the huge power of my beta.
i think that the vhf-1 is not good with headphone like the nw´s orthodynamics or the akg k-1000, but with normal headphones has no problem.
i still have not heard in balanced mode but for now with the ultrasone i liked
aldo