Which Super Integrated Amp to drive planars?


So, i've narrowed down my shortlist to the below amplifiers to drive my LFT 8B Planar speakers. These are all big powerful integrated amps - having a preference of integrateds at this pricepoint. My source is an Esoteric SA60. I play nearly all music genre.

Can any forum members share their views / experience with any of the below mentioned amps - preferably where driving difficult / low sensitivity (84dB or less) full range speakers? Comments on the synergy between the above and below mentioned products also deeply appreciated.

Super Integrateds (High Power products only)

BAT VK-300X SE -------------------[150w 8ohm, 300w 4 ohm]
Coda Continuum CSI ltd edition --[220w 8ohm, 440w 4 ohm]
Krell 400xi --------------------------[200w 8ohm, 400w 4 ohm]
Pass Labs INT-150 ----------------[150w 8ohm, 300w 4 ohm]
Unison Research Unico 200 -------[200w 8ohm, 350w 4 ohm]
Boulder 865 Integrated -----------[150w 8ohm, 300w 4 ohm]
Sim Audio Moon i-7 ---------------[150w 8ohm, 250w 4 ohm]

Thanks
kiwi_1282001

I had the Krell 300iL driving my Maggies 3.6. I'm know driving the Maggies with a Spectron Musician III Signature Edition and the difference is night and day. There is nothing like a powerful and refined amp to drive speakers with low sensitivities. I thought 400w into 4 ohms were ok to drive the Maggies until I tried 800w into 4 ohms. There is a lot more control over the decay and solidity of the musical notes that weren't simply there with the Krell.

I've used this amp via the volume control on the Benchmark DAC1 and using Promitheus Audio C-core Reference TVC. The best sound comes with the TVC. The sound is taut, well controlled and very articulate. Imaging is simply world class. This amp is extremely transparent and will expose the strength of your system, but will also display the iniquity of any component in your system.

BTW, this combination is about the same price as the up-marked components in the list.

iSanchez

Rtilden,

Thanks for your detailed response.

Its deeply disappointing to hear (again) about the poor ethics demonstrated by some reviewing magazines. As any marketer will tell you word of mouth is the frequently the best form of promotion, albeit one that's effectiveness can be constrained with limited circulation.

That Coda were willing to modify product is remarkable.

If Coda is coming out with a new integrated i'd be surprised they would call it the CSX - since a CSX product already exists in the form of a stereo power amp?

A number of the products on my shortlist (i.e. BAT, Unico, Pathos) are in fact a marriage between valves and SS. Its clear to me that after trying a number of valve power amps (including some big VTL's) whilst the sing in the mid-range they can't, at least to my satisfaction, control the bass. So SS is required for the PA stage to control the LFT-8's.

I have no doubt that the CSi will exercise full authority over the planars and so the only question that now remains is how well the inter-product synergy works and whether the character of the CSi's sound meets my personal taste. For that i need an audition and i'll be doing that soon.
Kiwi:

Please keep us posted as to how your system sounds with the CSi. As I recall, CODA determined that the higher wattage taps on the transformer (same as used in the CX amp) were not advisable for the integrated; thus they used the lower taps and kept the wattage at 220 (into 8 ohms). One benefit of the 220W version is that it goes higher in Class A (up to about 50W), whereas the higher taps yield about 25W Class A before switching seamlessly to Class AB.

If this is important to you technically, I suggest that you ask CODA directly, as both my recollection and technical knowledge are less than perfect.
03-14-08: Sugarbrie
Blue Circle BmPH (160w - 8 ohm)(260w - 4 ohm).

Do you own one? Do you know how big (VA) the terriod is?