Integrated amp for my Sonus Faber Guarneri

Deaf_in_left_eye, I can't talk for the other posters, but when I talk about your front end, I am referring to your source components. The Toslink connection IMHO, needs to be tossed (pun intended). I'm not sure that the imac with flac files is the way to go either, others with more experience on this area might comment.
The itunes platform apparently isn't that great for downloading hi-rez files. ( I am presuming you are using itunes?) ( see MF's comments in the new Stereophile)
The iDecco DAC might be ok, but I suspect that there are probably significant losses there as well. I heard a Peachtree Nova a few months ago and frankly it did nothing for me. Albeit, I heard the Nova used as a integrated and not as a stand alone DAC; the Nova was ahead of a Mac Mini feeding WAV files. IMHO, the sound was very thin and unimpressive.
I think that a better solution would be in the way of a stand alone transport and DAC along with a different set of electronics...I would dump the Mac integrated and look into maybe the new ARC Vsi60 or if funds allow a good tube amp and separate tube preamp. The preamp section is a really important part of one's system, IMHO. Besides the front end, this is where I suspect you are also loosing a lot of information. The aspect of a flattened sound and a distant presentation most likely can be laid at the integrated's preamp section along with the cables that you are using.

Hi Daveyf I agree that the Nova and also iDecco amps sound thin and unimpressive, so that is why I only use the DAC direct output. My music collection is mainly in FLAC and WAV format, fed from an iMac. They are mostly high-rez (24/96) rips and not from iTunes. If not fed from the iMac to iDecco via Toslink, do you suggest USB? technically, the optical link should have the least loss.

I don't see an ARC Vsi60 available in Japan. The only amps from this thread I see here is the McIntosh, which is why I went for that. I would like to try something else, but fear a lot of hit-and-miss at great expense.

As for cables, again, could you recommend some common brands/models that I might be able to find here quickly? I mean something that would show me the difference from my low-end cables right away while I'm testing the Gs.

This is all very frustrating, as I feel I'll probably have to give the Gs up without first knowing how they can sound when matched properly.

Hi Deaf, I would suggest an S/Pdif on Coaxial if you have the ability to connect that way.A digital co-ax would be highly preferable to the Toslink. I use a Harmonic Tech Platinum digital cable that seems to be a good connection as an example of a co-ax connect. In regards to speaker/ic cables, I really like the Nordost line. As you can see, I am now using their Red Dawn Rev2 speaker cables and I am impressed by these.
I do think that the line below Red Dawn is too bright though, so you may want to start at Red Dawn or above. I'm not sure what is commonly available in Japan, if the Nordost is not, then I would suggest looking at the Furutech cables. BTW, I don't really understand why you cannot order gear off the web? Certainly cables are pretty easy to order online...I'm also fairly sure that ARC will be happy to sell you a piece if you don't have a local dealer, or at least refer you to a dealer in Japan. ( I would think there is one).

Hi D-I-L-Eye,

Been busy and am glad to see many AGoners have stepped in during the last couple of days.

- Glad to see the toe-in helps...i do not know your room, but suspected it might.
- If you slide the G's back towards the back wall about 1 foot, you might find greater bass authority...you will need to re-adjust the toe-in a bit so that you continue to avoid seeing the sides of the speakers...or because of the speaker being further away...you may prefer seeing just a small bit of the inside of each speaker.

- i generally prefer co-axial cable as well...if the MAC does not have it, then trying to adjust this part of your system may be too complicated in the short amount of time you have...dont worry. this is not the end of the world, and you are really looking for fullness and bass. (so see below)
- as for cables, ask your store if they've any old Transparent Ref cables. relative to the description of beldens, try even audioquest crystal cables. again, very helpful to give bigger sound...but see below for more thoughts...

SUBS
- As for sub...my own personal experience ranges back to 1995, and across multiple rooms, large and small. they will give you big bang for your buck for the fullness/bass it appears you are looking for, providing you pay attention to a few critical things:

in general, in smaller rooms, you will find the blend difficult to achieve perfectly...in my own experiences, i have always preferred to keep the sub in and live with the tradeoffs of an imperfect blend. this is because i often listen to hip hop, as well as classical/jazz.

as for blending, i think you if your sub can do a steep (18db-24db) crossover on the sub at 45hz or below (ie, shutting off the sub from producing sound at above this level of bass), and then turn the volume of the sub down to suit your ear, i think you may find your listening tastes may result in the pros outweighing the cons.

Finally, some thoughts on your dealer. clearly, he wants to make a sale...share with him your dilemma and ask that he give you a sub to try ASAP!!! Plus ask for an extra 1 week to trial the sub with the Gs.

As a final thought, swap the Gs for the Sonus Faber Cremonas (not the Elipsa which i believe costs more than the Gs)...the Cremonas look like the Amati Homage...but have a more straight forward sound...and being floorstanding will inherently deliver more bass than a G. And they retain much of the "family sound" of a G...please check but i think they cost in the same range as the G?

Good luck and feel free to continue ask any questions!!!

Deaf, just to follow up on the article in Stereophile about the idecco. Art Dudley, the reviewer, suggests and uses the USB input from his Mac to the idecco. He also has various other suggestions that you might want to review about the hookup of the idecco.