@DrivenKeys Hello mate. I recommend as drawings said R16 and R17 50k (47k resistor) and pot 50KAx2 dual 50K Log. I builded three and are exellents. Move perfectlly my beyers 250ohm and Hifiman HE-500 The only upgrade I made was increasse to 1000uF C3 and C5 (nichicon muse fg 1000uf 63v) but...

Thinking to buy...

Here goes another one!    Thanks to Pete Millet, Dsavitsk & specialy to Fred_fred ;-) Also all Head-fi'ers (with his comments) who make it possible.   Enjoy your projects!      

This knot make the headphone unique.  Cheers.

Hello again :) I tried with an 2x18v 80va, but the maximum dc voltage was around 40v. I don't know why (the theory and the practical was not the same) Waiting news about your lineal psu. Best regards Toni

Hello mate. You are right, I'm using a tl783 voltage regulator (see this item http://www.ebay.com/itm/High-Voltage-Adjustable-Regulator-Module-Based-TL783-/130669696724?hash=item1e6c8556d4 ) About the transformer I'm using RS part no. 223-8049 (it's too big but it's what I found) I will use a...

Hello Vapman. The AC switch and socket is : Panel Mount Fuse Holder IEC320 C14 Inlet Red Lamp SPST The audio sockets are: Neutrik NJ3FP6C-BAG 1/4" 6.35mm Jack Chassis Panel Mount, Neutrik NF2D-B-9 Phono RCA Chassis/Panel Female Socket RD and Neutrik NF2D-B-9 Phono RCA Chassis/Panel Female...

Here another amp Thanks Fred!!!! :-D      

Here another amp :) Best regards mates!   Toni    

Hello mate. Yes, this PCB uses this schematic. Have fun and enjoy it!   Toni

  Hello Akemi. I have Shiit Lyr 2 and is a good combo with my Hifiman HE-500. In others forums  I read Vallhalas is not good enought for Hifiman. Schiit Lyr 2 very recomendable Enjoy it.   Cheers   Toni

I appreciate your advices. I finally shall begin in orthodynamics with HE 400 (looks exciting headphones) I'll consider LCD-X for the future but I need to save money, now is out of my budget (900€) Thanks so much. Best regards   Toni

Hello mates. I got a Schiit Lyr 2 and I want make a good combo. Which do you recommend for electronic music? HE400, HE500 or HE560 That I read HE400 is v shape, HE500 is neutral and HE560 have a good bass and basicly good in all frequences. Is it right? I'm not a basshead but I like feel a...

Now, I have not on my home my Starving Student. Is in my work. (I'm convalescent of work accident) With a low impedance 32ohm (I remember) I have a little hum.

Hello Slimzim The matter is adjust the gain for high an low impedance headphones. What kind of headphones do you use?