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Old 12th March 2010, 02:51 PM   #191
zlati84 is offline zlati84  Bulgaria
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Hi, tortello, could you please send me pdf version ?
zlatan_mitev@abv.bg
Thank you!
Zlatan
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Old 9th April 2011, 01:48 PM   #192
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Tortello, could you please send me pdf version ?
iwan010180@yahoo.com
thank you !
iwan
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Old 10th April 2011, 11:35 PM   #193
Vladco is offline Vladco  United States
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Check HeadWize - Project: The Zen Headphone Amplifier by Marcello Pellerano for more detail. O headfi.org diy sectuion for advice.
Vlad
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Old 11th April 2011, 03:49 AM   #194
zlati84 is offline zlati84  Bulgaria
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Thanks!
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Old 12th April 2011, 05:32 AM   #195
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thanks a lot
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Old 28th January 2012, 06:58 PM   #196
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Hi, tortello, could you please send me pdf version ?
wwwssswww@abv.bg
Thank you!
Nikola
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Old 14th October 2012, 06:42 PM   #197
44250 is offline 44250  Serbia
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Default TODAY

Here is my ZEN like headphone amplifier. I have finished it today after reading this tread. Since a few of you here have had some humm troubles,i have used two 4700uF per chanel at PSU board and one 3300uF at each amp-board. I have redrawn PCB so it fits with my heatsink,the PSU board and Timer-Eq. boards are as the author suggested. I have wired it just as it is in "Power connections" pdf and there is no audio humm at all. IŽd say it has a lack of hi-frequencies but it still sound wery wery pleasant. Thanks for this project mr. Marcello Pellerano!
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Old 14th October 2012, 07:08 PM   #198
Manu is offline Manu  Europe
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Old 16th October 2012, 09:26 AM   #199
44250 is offline 44250  Serbia
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It may be that my ears got used to listen to this amp or it may be something else,but iŽd say that now there is no previous lack of hi-frequencies. It sounds really good!

Here is my version of PCB (100x67mm) ,if someone needs it:
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Old 23rd October 2013, 02:19 PM   #200
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Hi all I made the amplifier but I discovered that the sound I get is rly rly low...or how to put it quiet! I have to put to max everything to can hear normally the sound! Is there possibility that I did something wrong? I measured the Transfo that gives me 25V instead of the 18 that I ordered it . ______ . could that be the case? Sorry for the question but I am not really into electronic just like to make things and soldering (and few things that I have read)... and that is as far my knowledge goes. The Headphones I use are Superlux HD 668B which are 2x56 Ohms. Ideas?
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