[neutralos]

Like an old german wisdom says: "the better one is the enemy of the good"
And this should not mean, that the V2 was an amp of average quality  -

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Edit: 07. January 2011

My views about Nuforce overall sound performance changed meanwhile. The IA-7 V3 is not so good as I described it in the past. It was clear beaten by an stronger Tripath regarding tonality and details. The bass performance maybe just plays only a rule in case of very hard to drive speakers.

Don't know how the performance of the ref. series is.

[Welborne]

guess what my friend, i just sent my ia-7 v2 to the agent here in Hong Kong for upgrade and they will return it to me next week. I can't to wait to hear the new version. i will report more here.

[beachbum]

neutralos thanks for your comments on what your are hearing with V 3. The price for V 3 is very reasonable and i m ready to get it on my SE V2s. Let us know as you get more hrs on your amps any new impressions.

[neutralos]

... of course there are also some critics even though they are less and to handle good with
corresponding equipment.

Valid for both - V1 and V2:
- depending on the recording quality of some CD?s I can listen out a microfon sibilance.
But this can be depended on my audio configuration consisting of a Meridian CD Player and a pair of very dynamic 20 yrs old Focal Expression speakers. The kevlar tweeter is well known for it?s great dynamic and resolution.
I haven?t tested much cables or an AC filter yet. These are the ways to go for fine-tuning next time.

[Welborne]

One question. I think this is the Ia-7 fitted with V3 board, but it occurs to me too that the power supply and preamp section boards are also layed out differently. The output inductors are now located on the board instead of near the speake socket ends etc.



So when IA--7 v2 is taken in to upgrade to V3, is it the case that the power supply board/preamp boards are to be changed too?

This is V2 internal

[nuforce-casey]

Hi,
No this is a IA7V2, the preamp board has been changed so the assembly is more logical and to accommodate new 1-piece chassis.  It's a layout/format change but the circuit remains the same.

V3 is hard to tell from a picture like this, the most important difference is that there is a 'sense wire' on each of the speaker cable, so you'll see a thick speaker cable and a thin 'sense wire' both connected to the binding post.

[Welborne]

hi casey,

thanks for the input. so you mean the image on the top and bottom are BOTH V2?

[neutralos]

hi casey,

thanks for the input. so you mean the image on the top and bottom are BOTH V2?

Hi Welborne,

don?t ask too much !!! Let the cooks do their job and enjoy the meal 

[Dapo]

hi casey,

thanks for the input. so you mean the image on the top and bottom are BOTH V2?

I think the picture on the top is V3. Where did you find this picture?

[Welborne]

hi casey,

thanks for the input. so you mean the image on the top and bottom are BOTH V2?

I think the picture on the top is V3. Where did you find this picture?

i got it form some chinese review website. It was talking about V2 IA-7 but I thought it looks different from what is installed in my own IA-7 v2

[Dapo]

This is the picture of new V3 board from Nuforce site. Very, very similar, but this is not the same board like one from the top. When you look further there is some modification on V3 board.


Borad from chinese review website is some kind of hibrid V2 and V3!!??

[rustydoglim]

Both the IA-7 images are showing V2 boards.

All the V3 boards should have the model # "Nuforce R5".
IA-7 use a shorter version of this board (since input section parts were moved to the preamp board).

In future production, we will change the board color to black.
Valid V3 boards:
Red color board with "Nuforce R5" label
Black color board (next production run) - hey just applying the black dye to the PCB, don't freak out, no change in the design.

[Mass. Wine Guy]

Pardon my fuzziness, but do you mean v2 is better than v3 or the other way around?

[rustydoglim]

V3 is our 3rd generation amp and it is better in every way than V2. There are many reviews on our website and also measurement on the upgrade/technology section.

[Mass. Wine Guy]

V3 is our 3rd generation amp and it is better in every way than V2.

Looks like there is a decided difference of opinion on this point. How large is the power supply and what's the damping factor?

[neutralos]

Pardon my fuzziness, but do you mean v2 is better than v3 or the other way around?

Hi,
as I said before: I just only can talk about the I-A7 V3 and I owned it with the I-A7 V2 together at same time.
I am just sure that I was more influenced by expectations about the V3.

Jason & Team offer a very professional support. No doubt. How the Ref. Monoblocks do sound combined with different Pre Amps I cannot tell.

[Tubo]

Clear as mud. Reminds me of ancient Greek oracles whose forecasts were so  ambiguous people would hear what they wanted to hear.