Some impression on Zu Omen Definition

I love mine with an Emotiva XPA-2. Have not tried any
other amps, but feel no need!

I'm listening to a pair of Superflys with an F3 clone as I type this and its damn good. You should be able to pick one up between $500 and $600 here when they come up and I strongly suggest you do to assess it for yourself. They re-sell easily if you don't like it and you've got nothing to lose.

This F3 along with a Redgum RGi120 (integrated) are the two solid state standouts I've found for Zu speakers. I'm driving my F3 clone with a Shindo pre and the presentation is very similar to my 845 SET monos. Not sure I'd know which was playing if blindfolded--it really is SS that sounds like SET.

The Redgum makes for an exceptional, energetic synergy as well. Not quite the level of refinement of the Shindo/845 or F3 combos, but dripping wet, nicely textured and with awesome bass and drive.

I've got a Redgum RGi35 sitting on my dining table that I've been meaning to compare to my buddy's RGi120 (also on my table) and contrast the 2 against the F3 for my summer amp duties (845s too hot), but since the F3 has gotten here I haven't had much interest in pulling it out to A/B.

Someone on AC said that Mini-Torii was highly recommended by one of the Zu boys and has an exceptional synergy with the Omens. I haven't heard it, but my interest is piqued in that amp. I was strongly tempted to buy the used one on AC to demo for myself, but I've got four amps on hand at the moment and there has to be SOME end to my wife's patience with me, lol.

I am very interested in the Mini Torii too. I think it looks very good, better than a F3 clone. And I am using a SS now, so, I am tempted to try a tube SET even though the F3 sound very close to a tube SET. One thing is, the Mini Torii is much more expensive than a F3 clone ... and I can't find any review or comments with someone directly comparing the two.

BTW, is the mini Torii an integrated or a power amplifier? It has a volume knob, and it seems it has a preamp section, and it stated on the web site that a preamp is not needed. But what if I already have a preamp? Would it alter the sound in a negative way if the signal is preamp twice?

And it has 3.5 watt into 4 ohm, not sure how much watt will be there for Omen Def which is 6 ohm .. like 4.5 watt?

The Mini torii has a volume control, but many amps come like this in the SET world. So you can use a pre amp or not, and it will not harm the quality of your sound if you do. Either the F3 or the Decware will be a winner for you, though I am betting the Decware would be much less similar to your current amp than the F3. BTW you will have to be very patient, and move quickly to get a used DIY F3. I bought the one Gopher had within an hour or so of it posting and Gopher snagged mine in about 15 minutes. That was the only one I have seen for sale in two months. If I were you, based on what I know about myself and Gopher, I would grab the Decware before we jump on it. If I were not breaking in a brand new fabulous amp with two other fantastic amps sitting next to it, I would go for it myself:). But I am spontaneous and may change my mind at any second:).

Oh ... I just found out that the F3 has an input impedance of 10k Ohm, which is too low for my PrimaLuna Preamp with output impedance of 2800 ohm!!! I almost overlook this part. Gee ...

So, the F3 is not good for me then? Would other First Watt product good for me? I think I read someone post the preference for Zu is

F3 -> M2 -> XA 30.5

I don't know the difference between F3 and M2 by reading the web site. Does anyone has any experience with M2 and Zu Omen Definition?