Hi, I can get this Chatham 6080 for about 40$, is that good? Thanks!

@Jason Stoddard hi, i see a lot of big Wima caps in Folkvangr , isn't it used for coupling signal?

can you repost it, i can't see the schematic :triportsad:

Does anyone have the schematic for CTH? I can no longer find it.

Hi everyone Just got alerted to this program by my friend. I too would like to register for a turn to review the unit in Hanoi. My equipment at the moment include: AKG Q701, Grado RS2e and H6. My amp/DAC is just the very basic LH Labs v6, so I'm really looking forwards to trying the PLAY before...

Hi Pete, since this amp use both the nutube for gain and opa551 for output buffer like the sankanagu, do they share any similarity in sound signature?

  Lol, which "very high-end tube amp" did the designer use to make this statement?

Thanks Sodacose, That explains a lot. And some other things i don't understand: 1. The Edcor WSM is 0.5W, does that mean it can only transfer 0.5W of power e.g given secondary tap drving 32ohm load then the transformer can only  pass as much as sqrt(0.5/32) = 125ma, is that right? 2. What do...

Hi Sodacose, That's really nice design and your blog is very helpful for me as well as others who are starting to learn about tube. I have read throughly your Papa Russia headphone amplifier design and i'm confused at this: Assume that you use the 75 ohm secondary tap for 32ohm headphone...

Thanks all for your suggestion, i'm thinking about making a mouting for driver by using acrylic, a local shop do cnc acrylic real cheap. But have you guy ever heard the magnum with just the driver alone? I tried listening to it this way and it sound somewhat better, more air, cleaner but still...

  Anyone have an idea?

I have a Sr325is and i like it a lot so i decided to make my own a magnum hoping that it will be an improvement over the sr325is so i bought v6 driver and a custom wood cup for 40-44mm without knowing it will fit or not. So finally i received the cup, it was made both from aluminum and wood, the...

Does your Pico Power has scratching noise when adjusting the volume?

The 8820 soundstage is wider but the 8920 ss is deeper, the 8820 sounds a bit more clear and balance, 8920 sounds darker, and smoother, more analog like. I prefer the 8920 to the 8820. Btw, i'm from Vn to :)))

Does anyone know the diameter of V6 driver?

Thanks, is 99$ price per 1 or pairs?

I see in the turbulentlabs site the magnum driver is discontinued, does this mean the v6 driver or no more magnum driver?

  Do you mean ADA4610 is better then 4556 as a current buffer or voltage gain stage?

  So you mean if two amp have the same frequency respond, they will sound the same? According to measurement of Tyll http://www.innerfidelity.com/images/AllAmpGraphs.pdf every amp have identical frequency respond, except some have minor roll off at 20hz cause by the input capacitor, which is...

Flat frequency respond doens't mean neutral sound, most of the portable amp will measure as flat but each one has it own sound signature.

Because the EVO has too much bass so you can stuff cotton into the cup to make it less boomby.

  This is how my EVO sound, i even prefer it to the DT990 pre 600ohm and He-400

  I mainly listen to the 681 EVO because the red 681 was broken, i clearly prefer the red 681 to the 681 EVO (both modded) the EVO sound more refined, has more 3d soundstage, a little bit more detail but it sound more close in, the red 681 sound more open, has smoother mid, better bass slam, it...

  http://www.mediafire.com/view/av6k1rhkv5lwol6/Superlux_HD681_EVO.pdf

  I'm a big fan of superlux headphones, I love the red 681 the most then the 681 EVO. I always want to find a headphone with similar sound signature to the 681 then i buy the DT990 pre 600 ohm and He-400 and now both are collecting dust, i only use the 681 EVO to listen to music everyday...