Your experience as Yamamoto owner?

Hi Lewinskih01,
This may not be terribly helpful as I don't own one of their amps but I'm a more than pleased owner of the YDA-1 DAC a gorgeous and fantastic sounding piece of equipment. Regarding the amps sorry to hear that your inquiries were not answered but a few thoughts.

Of the 2 amps you mentioned the A-08S puts out 2 watts and the A-011 4 watts so regardless of what the intended impedance is you're pretty limited to high impedance high sensitivity speakers from the get go. The writeup for the specifically mentions Altecs and Lowthers.

I found an image of the manual for building the A-08S kit here:
http://www.jacmusic.com/Yamamoto/images/amps/A08/A08-Manual.jpg

That shows the schematic for the amp. All in all it's such a simple design I can't imagine needing much in the way of post sales service. Either way I hope it works out for you and eager to hear what you think of a Yammie amp if you do end up picking one up.
Cheers,
Jon

The 6moons review is here very extensive with great pics:

http://www.6moons.com/audioreviews/yamamoto2/45_2.html

And the link I sent you earlier was from the German importers website which is quite good. The previous US importer was I believe Venus Hifi and I think they are now out of business.

And the 6moons link I gave you starts on the second page sorry here it is from the beginning.

http://www.6moons.com/audioreviews/yamamoto2/45.html

I would second the Deja Vu rec from Gsm18439, I live near Deja Vu and have an amp and preamp of theirs, sound quality and customer service are both tremendous. In addition to building great amps they build custom crossovers as well, which it sounds like you may need.

Lewinskih01 I've never heard a Yamamoto amp sorry but I've heard many of Vu's amps, if you're looking for the 45 tube with more power I know that he makes a pushpull 45 amp, I had one on loaner a few months ago it was pretty amazing perhaps the most detail and transparency I've heard in my system. Their website does leave a lot to be desired sadly but give them a call (703) 734-9391 or email them [email protected] I'm sure they will give you any into that you need. And the combo of YDA-1 and Deja Vu amps to me is pretty spectacular at least in my system. Cheers!

They absolutely build their own gear take a look at my system here if you care to see their handiwork, and as I advised the OP just give them a call or drop them an email.

So this just popped up in the classifieds:

https://app.audiogon.com/listings/tube-deja-vu-audio-45-set-with-tango-western-electric-parts-like-2a3-300b-etc-2015-11-23-amplifiers-53185-wind-lake-wi

I have no affiliation with the seller but for $1600 that is a steal for a Deja Vu 45 amp, if you are still looking Lewinskih01.