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VHex+ Build & Review
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Old 16th July 2018, 01:57 PM   #1
GumGum9000 is offline GumGum9000  Germany
diyAudio Member
Join Date: Dec 2015
Default VHex+ Build & Review


this is a small thread about the build of my VHex+ which I've hade in my mind for some time.

It consists of three parts, the electronics assembly, the chassis assembly and the final product + thoughts.

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The PSU Boards and some parts

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The amp Boards

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Amp Boards with Transistors mounted on the Heatsink

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populated Amp Boards

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wired up

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the protection boards

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The SMD componets weren't problematic at all for soldering and the boards are very high quality as one protection board still works flawlesly after soldering and resoldering (heating the whole thing with a normal heatgun and ripping off the ATmega by just pulling it. Turned out it wasn't the chips who were broken but the oscillator... at least I'm keen on soldering chips now.) The process to getting it sing was quick and painless but getting it sing right was a bit more difficult (more on that later)

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File Type: jpg IMG_20171222_135454.jpg (193.9 KB, 624 views)
File Type: jpg IMG_20171216_172605.jpg (199.5 KB, 619 views)
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Old 16th July 2018, 01:57 PM   #2
GumGum9000 is offline GumGum9000  Germany
diyAudio Member
Join Date: Dec 2015
Now for that case.

The idea for three separate block just came and I liked is, so I went for it. I decided to build this out of stone as I already got nice results from using it for my preamp build and for me stone is cheaper as I don't have to buy it in comparison to aluminium, my granddad has plenty of it and is very experienced. Also everyone has a metal case, this is something special and I quite like the raw look of this black stone. Yeah, and stone is different to work on and has its own special traits.

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This isn't the exact rock I used for this build (this is the preamp one) but you'll get the Idea.

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my granddad working on it

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split it
man 1 - stone 0

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sawing it
the wall consists of more dirt than wall

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finished L-pices sunbathing (for the amp modules)

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somewhat assembled case

This thing is empty already heavy ~40kg. I originally planed to do the PSU (lower block) case monolithic by just carwing out a stone... but that would have weight ... a lot. Maybe it's even nicer that way.

Attached Images
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File Type: jpg IMG_20180325_142256.jpg (251.9 KB, 617 views)
File Type: jpg IMG_20180329_181716.jpg (183.0 KB, 617 views)

Last edited by GumGum9000; 16th July 2018 at 02:21 PM.
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Old 16th July 2018, 01:58 PM   #3
GumGum9000 is offline GumGum9000  Germany
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Join Date: Dec 2015
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Old 16th July 2018, 03:05 PM   #4
GumGum9000 is offline GumGum9000  Germany
diyAudio Member
Join Date: Dec 2015
And now for the final part.

VHex+ Build & Review-img_2144-jpg

I finished it approx. quater a year ago and it's been running sans probleme since then. I really like it. It's great for rock music.
So how does it sound like? (Hmm, natural)
Other Setup:
O2DAC+DCB1+VSPS+Cabasse Antigua M170
Well the first words to come to my mind are precise, fast and clean. No, really it delivers the music as it is, no coloring or emphasis on anything. But it gladly doesn't get clinical (as maybe the HD800) so I can still enjoy music with average mastering (The Doors).
It sounds powerfull and direct, sometimes on the edge of slapping you in the face with the music. Even at lower volumes it doesn't drop any frequencies under the table (*ahem*lower bass *ahem*) like my old ROTEL did. It just plays the music, even where it shouldn't play it. Yeah, it leaks into other rooms even at moderate listening levels while the other amps in the house have to play at a higher volume for that (and also have much bigger speakers). You get the whole music at any volume also outside the sweet spot. Kinda it articulates everything so nothing is articulated. I've never heard it at a volume where you get the feeling that it's running out of power. And when you feed it with heavy bass tracks (ex. Trentemoller - The Last Resort) and turn the volume up a bit, lots of parts in my room start to sing along happily.
However my current setup sounds lifeless or cold now, as the amp just delivers with what's it's fed. Just sayin' if you're planing (you should) to build this amp maybe don't pair it with two other super neutral devices. (A new preamp is in the build (probably BA-3)). Really, it's awesome, it does everything what I expect from it exceptionally, I don't know what I could wish more from a Class-AB amp.

On this point I'd like to say a huge thank you to the guys from VZAudio for assisting me during this build. You rock!
They send me a modified/custom version of their amp control setup for my three cases. (Two amp protection boards and the central power supply control board which communicate with each other and shut down the whole thing at any error. Which I didn't end using in its configuration as I had no place for the PSU module left.) And also told me which parts I have to alter since my LEDs had a higher forward voltage and came up with a ground filter for the hum I was getting due to a ground loop somewhere. They only left when I assured that my amp was working as it should.

I hope you like my little project and it's thread


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my sweet little pyramid

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ignore the ugly part of the cable

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the innards

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part of my listening setup
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File Type: jpg IMG_2146.jpg (240.0 KB, 633 views)
File Type: jpg IMG_2182.jpg (204.5 KB, 619 views)

Last edited by GumGum9000; 16th July 2018 at 03:14 PM.
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Old 16th July 2018, 03:43 PM   #5
Project16 is offline Project16  France
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beautiful, wonderfull! It's a really special idea but what a job!
You are crazy gumgum!
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Old 16th July 2018, 04:25 PM   #6
prasi is offline prasi  India
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VHex+ Build & Review
Hats off GumGum9000!
what a unique build!.
Agree with Project16, you must be crazy to pull this one off.
My revamped site https://sites.google.com/site/analogdesign1234/
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Old 16th July 2018, 04:36 PM   #7
anti is offline anti  Slovakia
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Originally Posted by GumGum9000 View Post
It's great for rock music.
Haha it seems to go with the enclosure!
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Old 16th July 2018, 10:40 PM   #8
jwilhelm is offline jwilhelm  Canada
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Location: New Hamburg, Ontario
Great looking amp! It's nice to see you have it completed and running.
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Old 17th July 2018, 01:43 AM   #9
zman01 is online now zman01  Bangladesh
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Location: Dhaka
VHex+ Build & Review

Fine work there, congratulations - a pretty unique build! Rock out in style with the VHEX+!
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Old 17th July 2018, 05:59 AM   #10
vzaichenko is offline vzaichenko  Russian Federation
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Location: Moscow, Russia
VHex+ Build & Review
Arrow Great job!

Whoa! Fantastic build! Rock solid
Excellent from the idea to the final product (including the external PSU).

How do you like the sound, by the way?
If you can't explain it simply, you don't understand it well enough (c) Albert Einstein
http://vzaudio.com/ | http://airplay.zone/ - DIY goes wireless!
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