[limpidglitch]

Neato, Jason.
 
Care to share a scematic? Loooks like something fit for a novice.

 

[jasonRF]

Quote:

Neato, Jason.
 
Care to share a scematic? Loooks like something fit for a novice.

The schematic is basically the first post of
http://www.head-fi.org/forum/thread/521457/discrete-portable-toy-amp
with R2=10k (for gain of 2), R3=680, Cin=22u,  and T7 and T8 replaced by 1N914 diodes.
 
Yes, I am somewhat of a novice and could do this.  However, it does appear to be quite a bit more involved than a cmoy (I haven't built a cmoy ...).    Was a lot of fun on the breadboard and to solder up.  I did a back of the envelope calculation and see that the open loop gain depends upon the phone impedance, so effectively has less feedback for lower impedance phones than it does for higher impedance phones. 
 

 

[zlobby]

Bottlehead Crack.  While its not modded at all, im very happy with both the sound and the aesthetics.
 
 

 

[forsakenrider]

Why are you running your "Crack" mono?

 

[zlobby]

Im not running it mono, its very much in stereo.  What makes you say mono?

 

[bkmonkey]

B22/S22 build.  Pretty much followed the standard BOM and added an epsilon24 for a bulgin switch in the S22 case.  I also installed wiring to add a epsilon-12 in the B22 case.

 

[forsakenrider]

Quote:

Im not running it mono, its very much in stereo.  What makes you say mono?

The picture really makes it look like the L and R signal wires are connected at the pot. I guess Its a dual layer pot and you took the pictures too perfectly perpendicular to the board! ha, my bad.

 

[jantze]

I took couple of pics from my set while debuggin the amp. The power button is misplaced in the DAC, but I have a new panel ready soon.
 
Most of the parts are from Twisted Pear Audio and AMB Laboratories. Neutrik connectors, Hi-Fi 2000 knobs and slim line cases w/ custom covers, engaved at Schaeffer.

PS:
2 x σ22 (AMB)
ε24 (AMB)
σ24 (AMB)
LCDPS (TPA)
LCBPS (TPA)
Transformers + relay

 


AMP:
4 x β22 (balanced, AMB)
Joshua Tree Attenuator (TPA)
Volumite Controller (TPA)
OTTO 2:1 Switch (TPA)
DIY output board w/ relays + Zobel network
2 x DIY unbalanced-> balanced converter
DIY board for Neutrik connectors w/ XLR + plug combo

 


DAC:
Buffalo-II DAC (TPA)
IVY-III I/V Stage (TPA)
S/PDIF 4:1 MUX/Receiver (TPA)
2 x TOSLINK Module (TPA)
USB Receiver/DAC (TPA)
LCDPS (TPA)
LCBPS (TPA)
ε24 (AMB)
σ24 (AMB)
DIY board for transformers

 


Set:

 

 

 

 

 

[johnwmclean]

That’s going straight into my ultimate builds folder for inspiration. Well done jantze.

 

[MrClean]

Bottlehead Foreplay and Paramour that I've build years ago combined into one.Anyone knows place to order custom logo plate?

 

[Gotez]

Wow,these last two builds are really beautifull!! Its a pleasure to see the pictures!!

 
 
 

 

[munchzilla]

jantze: drool. that is amazing... I'm going to have to snap some pics of my CK2 III soon, don't expect anything beautiful though. first build

 

[Gotez]

@Jantze, How do you connect your  Denons to the balanced system? Did you make an adaptor? Or did you balance the denons?

 
 
 

 

[eertelppa]

jantze, your build is absolutely beautiful and wonderful. I would love to build something like that one day. I saved it in my folder with other photos of builds (most of which were ferrari's builds haha)
 
Am I correct that one is the amp, ps, and dac?
 
 
ps, MrClean your build just makes me go woooo bc of my love for tubes.
 
pps, jantze what wire do you use throughout your build? just curious some looks like jumpers and small rubber coated wired and others look like sleeved wires.

 

[FallenAngel]

2 AWESOME looking builds, love it!  Congrats!