Do I want to much? Somebody help me!

mertol · 7th May 2004, 01:31 PM

Hi all ;

I need an amplifier a close as possible to specs below.

1) Battery powered (1.2V per channel only, but I am ready to use DC-DC converters)
2) 2 Watt Peak out put
3) Class A if possible (I know it will eat the battery)
4) Simple and Small (will fit in a very small case)
5) It must accapt both lin out & headphone out.

I will be very please if some one can point me the right direction.

best regards
Mertol

djk · 8th May 2004, 09:33 AM

It is possible to build a headphone amp with 2.5V~3V

http://www.national.com/parametric/0,,4347,00.html

To get 2W at 4 ohms you will need more like 5V

http://www.national.com/parametric/0,,799,00.html

Most headphones these days seem to be about 32 ohms, so you will need more like 3 cells to get 50mW output.

7th May 2004, 01:31 PM	#1
mertol diyAudio Member Join Date: May 2004 Location: Istanbul	Do I want to much? Somebody help me! Hi all ; I need an amplifier a close as possible to specs below. 1) Battery powered (1.2V per channel only, but I am ready to use DC-DC converters) 2) 2 Watt Peak out put 3) Class A if possible (I know it will eat the battery) 4) Simple and Small (will fit in a very small case) 5) It must accapt both lin out & headphone out. I will be very please if some one can point me the right direction. best regards Mertol

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8th May 2004, 09:33 AM	#2
djk diyAudio Member Join Date: Feb 2001 Location: USA	It is possible to build a headphone amp with 2.5V~3V http://www.national.com/parametric/0,,4347,00.html To get 2W at 4 ohms you will need more like 5V http://www.national.com/parametric/0,,799,00.html Most headphones these days seem to be about 32 ohms, so you will need more like 3 cells to get 50mW output.