@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?

Great! I'll test it. Cheers   Toni

Hello mates. It is a technical question, about Dsavitsk 12au7 additions highlighted. If I install a toggle switch (two ways) in the input signal, switching R16 & R17 with values 10K and 50k (using 50k potentiometer) Does this would work as high and low gain? Or signal become unstable? :O  ...

Thanks mate. The next step will be this one, but now my budget... I need a little time. I'm really happy with it. Cheers   Toni

Sorry mates for the delay Few weeks ago I got my Lyr 2. These days I'm enjoying so much (cos I'm convalescent of work accident) After more then fifty hours burning , my definition: Amazing (my opinion) Good materials, stronger, design, powerfull (low & high gain), clarity, good soundstage...

He helped me also in my beginnings, great guy! Thanks MalVeauX    Toni

Is what KimLaroux say. Always do that.   Cheers

Hello again!     See the datasheet, should be the HD280s drivers most difficult to EQ, or some reaction between amp and headphones (power matter)  HD650  300ohm HD280s  64ohm   http://en-us.sennheiser.com/high-quality-headphones-around-ear-audio-surround-hd-650...

Hello TLoFP I'm really happy to read this lines. Finally the line becomes a circle.  From what I've read, if well amplified, these have good bass (controlled) and are versatile in different genres. Good headphones are good headphones, it doesn't matter the genre, if the sound from the...

the thread is getting very interesting... :D