Unity gain buffer for Sennheiser HD600

[mlackey]

http://nwavguy.blogspot.com/2011/02/headphone-amp-impedance.html

http://www.waltjung.org/PDFs/Composite_Line_Driver_with_Low_Distortion.pdf

In the Walt Jung article, note series resistor in parallel with choke. See last page, second paragraph, for details
.

 

[tubemax]

Hi Pilau,

I just want to add another possibility for your quest regarding headphone amp for sennheiser HD600. I built for myself one simple portable buffer amp for my old HD535 ( 150 Ohm ) headphones from the ESP website ( Project 109 ).
I did not build crossing filter ( not needed ) - in total it works rather well with plenty of power and punch to any headphones I connect to it. Total cost is about 25.- Euro incl. casing and all of the components.

 

[xrk971]

Here is another option:

Not until gain but about 3x. Can work off mains SMPS or battery.

http://www.diyaudio.com/forums/head...f862-based-se-class-headamp-without-heat.html

And if you really want some nice ability to drive 300ohm headphones - this is really nice sounding too:

http://www.diyaudio.com/forums/solid-state/301164-mosfet-source-follower-headamp-18.html

This is the core "engine" of the above amp:

I am driving 250ohm DT880's with it and sounds fantastic.

 

[hpeter]

Bf862 gets lots of attention in audio, i do not understand why. Just basic jfet - like curves. Lu 1014 looks better.
Otherwise thumbs up.

 

[xrk971]

I think the BF862 is the new SK170BL without fear of getting fakes.