[andrzejpw]

Anyone build this amp? How's it sound? Compared to a cmoy? With hd580s/600s?

 

[andrzejpw]

No one has built this amp!???

 

[ringtheorist]

It is on my agenda. However, I have many other projects in progress and my tube amp is doing me plenty fine for the moment.

Ask aos. I know he made a layout and prototype but I don't know if he finished it. You could also ask the author

b

 

[Nezer]

Asking the author is a great way to get an unbiased opinion.

This is on my to-do list too. As for the sound, there is really one way to find out for sure--sample it! Not always feasible though. Maybe JMT can build you one inside a stuffed-animal.

 

[aos]

I have finished more or less one channel of the amp. I have pictures somewhere on Headwize. I designed PCB for it as well.

Lack of readily available +-24V power supply is the reason that I
haven't even tried it yet. I have other project going on now (portable DAC, less than a week away from 2nd prototype) and I am not listening to headphones at all since I bought good speakers so this project is on backburner.

I do plan to finish it, definitely. I may need it as a line amp on another project if it sounds good.

 

[andrzejpw]

24 volt ps is needed???? How would I find one of those?????

Is this a good amp for my second(first is a cmoy)?

 

[ringtheorist]

It's certainly a bunch more difficult than a cmoy, and with as many components, an etched board would come in handy.

I did, however, finally decide to start building it. I have the transistors and the toroid, and the caps, resistors, etc are in the mail. I'm contemplating creating a new layout. aos sent me his, but we have conflicting versions of Eagle so I can't open it up

If you want to build one and don't want to deal with etching, you could build it on vectorboard. That might be a big pain in the butt though.

If the layout works well, I may order some professionally printed boards from a place in town. I'll start a new thread if I plan on it

b

 

[andrzejpw]

For now, I'll stick to the cmoy. I'll build the kumisa in a few months. If you get those boards, I'll take 2 please!!!!

 

[kumisa]

Hello all.

Interesting reading. I’m the original designer, thou i have changed email some times since I made the amplifier. Please tell me how it went?

Did you build it?

 

[Nisbeth]

Quote:

Originally Posted by kumisa Hello all. Interesting reading. I’m the original designer, thou i have changed email some times since I made the amplifier. Please tell me how it went? Did you build it?

Hi Benny, welcome to head-fi

If you do a few searches, you'll see that some have indeed built you amps, but as you haven't really been available to answer questions about the design, most of the attempts that I can remember hearing of were never completed

/U.

 

[Voodoochile]

Nice to see you here, Benny!

 

[erix]

Wow!

Names from the past!

ok,
erix

 

[awpagan]

so benny have you disappeared again?

I'm in the process of making one.

any advise?

allan

 

[looser101]

Sijosae has some info on the Kumisa III. I did a search on his pages and found this:

http://translate.google.com/translat...language_tools

-R-

Edit: Can't link to the search results. Search for Kumisa at the bottom of the linked page.