The Vac PHI 300 could be run as monoblocks, if you choose to buy two of them. (However, it is also set up to be run as a stereo amp. As a stereo amp it runs at 150 wpc, and as monoblocks, they run at 300 wpc.) The cost of two of these amps is rather pricey though @ $15K each, (so $30K a pair). (Although I believe that a used one is for sale for $8K here on Audiogon, (and if you need another one to use as monoblocks, I can give you a lead, as I believe I know someone who will be selling one soon.) I will also state that I have only heard it run as a stereo amp though. (And, it very well might work just fine as a stereo amp for you, as my friend has speakers with very similar spec's to yours, although his speakers are probably slightly easier to run as the sensitivity is about 89 db. His speakers do have 12" woofers though, which do suck up the power!)
I will state that this amp was among the finest high powered amps I have ever heard. (The three best I have heard are the hybrid Lamm M2.2 monoblocks (220 wpc - $22K), the solid state DarTZeel NHB-108 (100 wpc - $16K), and now the tube VAC PHI 300).
My friend directly compared this amp to his Lamm M2.2s, and while it will not replace his Lamms, it was very impressive nonetheless. The Lamms have a somewhat deeper and quicker bass response, and they seem to have slightly better quickness, especially when it comes to that initial attack that percusive instruments have, (such as the piano). So, if you demand the very best in bass response, and relish that initial attack of percusive instruments, the Lamms will come out ahead. (At least they did in our auditioning, which admittedly was with only one VAC, rather than with two of them run as monoblocks. Running two of them together as monoblocks might boast the power enough to raise the bass response up to equal, or possibly exceed, the Lamms. But then again, maybe not, and maybe it might detract from the wonderful mid-range and treble response - see below.)
And, it was in the mid-range that the VAC is really something special. If female vocals are your passion, I recommend that you not hesiate to audtion the VAC, it is that good. (And yes, even slightly better than the Lamms! Maybe not quite as neutral, but this amp sounded incredibly sweet.) In addition, the treble response of the VAC is ever so slightly better than the Lamms. (They have an added sparkle to the sound that cymbals have, that makes for a truly amazing treble response.)
I will also point out that this amp run hot. (Hotter it seemed than both of the Lamms together, and the Lamms will warm up a room a few degrees.) I recommend that if you run two of them, that you have A/C, which my friend does not have. In addition, the cost to retube this amp would be somewhere between $500-2,000, (per amp), depending on the tubes you choose to use. (i.e. stock or NOS), so it will ultimately be more expensive to run than the Lamms.
Or, if you don't have to have true tubes amps, you can "settle" for the hybrid Lamm M2.2s, which only have one tube in each amp! (At 2/3's the cost!) And IMHO, are sonically the VAC's equal, as they each have their own strengths and weaknesses.
My two cents worth anyway.
I will state that this amp was among the finest high powered amps I have ever heard. (The three best I have heard are the hybrid Lamm M2.2 monoblocks (220 wpc - $22K), the solid state DarTZeel NHB-108 (100 wpc - $16K), and now the tube VAC PHI 300).
My friend directly compared this amp to his Lamm M2.2s, and while it will not replace his Lamms, it was very impressive nonetheless. The Lamms have a somewhat deeper and quicker bass response, and they seem to have slightly better quickness, especially when it comes to that initial attack that percusive instruments have, (such as the piano). So, if you demand the very best in bass response, and relish that initial attack of percusive instruments, the Lamms will come out ahead. (At least they did in our auditioning, which admittedly was with only one VAC, rather than with two of them run as monoblocks. Running two of them together as monoblocks might boast the power enough to raise the bass response up to equal, or possibly exceed, the Lamms. But then again, maybe not, and maybe it might detract from the wonderful mid-range and treble response - see below.)
And, it was in the mid-range that the VAC is really something special. If female vocals are your passion, I recommend that you not hesiate to audtion the VAC, it is that good. (And yes, even slightly better than the Lamms! Maybe not quite as neutral, but this amp sounded incredibly sweet.) In addition, the treble response of the VAC is ever so slightly better than the Lamms. (They have an added sparkle to the sound that cymbals have, that makes for a truly amazing treble response.)
I will also point out that this amp run hot. (Hotter it seemed than both of the Lamms together, and the Lamms will warm up a room a few degrees.) I recommend that if you run two of them, that you have A/C, which my friend does not have. In addition, the cost to retube this amp would be somewhere between $500-2,000, (per amp), depending on the tubes you choose to use. (i.e. stock or NOS), so it will ultimately be more expensive to run than the Lamms.
Or, if you don't have to have true tubes amps, you can "settle" for the hybrid Lamm M2.2s, which only have one tube in each amp! (At 2/3's the cost!) And IMHO, are sonically the VAC's equal, as they each have their own strengths and weaknesses.
My two cents worth anyway.