The $27,900 disappointment? Wilson Audio Watt Puppy 8 issues.

I do believe two Mc275s in mono are enough to drive the W/P 8s. However, I do waffle between the 8 ohm tap and 4 ohm tap. These taps are halved when in mono mode, so, in mono mode they are supposed to be 4 ohm and 2 ohm. The 4 ohm tap produces more current and less voltage than the 8 ohm tap, and I believe you can hear and feel that in the bass. For excellent high res (SACD) recordings with good bass, the 8 ohm tap is hard to beat. For older, thin sounding CDs like Punk Rock, he 4 ohm tap sounds better fills the room much better and fixes thin sounding CDs. Also, on the 4 ohm tap, my furniture and bar vibrate more from the bass.

@hjdca Beautiful system! You know what sounds good - ignore the noise floor from YouTube hucksters. That's a different hobby than what you (and me) are doing. 

It is a very nice system, but if it were me I would pair the Wilsons with a really good S.S. (high $) amp to see what you get and what you give away. There is no way that a speaker that dips like the Wilsons can work ideally with tube amps. To me a glaring problem in a good speaker line.

Thanks for the kind words. It is much appreciated. From what I have seen, most Wilsons have that almost 2 ohm dip at around 25 hz and 80 hz or 90 hz.... It is not something particular to the W/P 8..... but, Ok, good idea to test with a SS amp.... I do not have any high dollar SS amps, but, I do have an Adcom GFA-585 LE in my home theater that I am currently having refurbished due to cap leakage. I also have a Sony STR-GX9ES receiver in another room - which I think does not qualify... The Adcom GFA-585 is hardly high $$, but, it does put out lots of current - 250 watts at 8 ohm, 400 watts at 4 ohm.. When it is done being fixed, and I am satisfied that it is again working to spec., I will try the 585 on the W/P 8s. Attached below are the specs of the Adcom 585... Do you think it is a good enough amp to make the test between two MC275s tube amps and a decent SS amp on the W/P 8s ?

Some additional quotes I found regarding this Adcom GFA-585LE amp. I am not sure if it is competitive to today’s amp technology.....:

"this is the Crown Jewel of Adcom amplifiers.It is regarded as the best Adcom has ever made. There were only 3000 of these made. This is an extremely powerful amplifier. It puts out a real 250wpc into 8 ohms and 450wpc into 4 ohms. To give you an idea of the power of this amp,you would have to put two 565 Adcom monoblocks in the same chassis to equal it.The 585 will drive any speaker. Not even the 5802 Adcom can go there with this amp.It uses Bipolar technology along with being a dual mono design. The transformer (70,000 uf storage)in this amplifier is at least half the weight of the entire amplifier. For the money this monster's hard to beat. It is perfect for electrostats, or hard to drive speakers, or if you just want a lot of headroom".

I’m not so sure I’d jump on tube amps as problematic for Wilsons because of a 2-ohm dip. Especially with mono 275’s - those 4 ohm taps actually become 2 ohm taps in mono mode (check the manual). Try those 4 / 2 ohm taps versus the 8 ohm (4 ohm mono) taps, and choose whichever sounds best. I suspect one or both of them will sound great, and you won’t hurt anything. In fact Solid State amps are the ones that you have to worry about, if they’re not truly "2-ohms stable"! Look for a solid state amp that spec’s its power ratings down to 2 ohms - otherwise, cross your fingers and good luck! And if you are bridging a SS to mono, you are REALLY playing with fire putting that on a 2-ohm dip (don’t do that unless you have something like a Krell spec’d down to 1 ohm). The way that tube amps "switch to mono" is by paralleling the OPT’s, which should actually work nicely for scenarios like this. By comparison, SS bridging is bad news here.

Some of you guys will move mountains to solve problems that don’t exist
Anyways - why not ask Wilson what they think / suggest?