i'm currently slumming it with a B1 and F5 (currently being re-chassied) and a pair of Fonkens. the ATCs need moar power and are sitting idly by. i'm digging FR drivers these days.
holy shit!!! that's a lot welly on tap to drive the K1000. i owned that steaming heap of Krell for 2 years to drive my piggy 83dB ATC SCM12. i miss the 400xi from time to time - a lovely sounding amp.
i don't mean to turn this into an op-amp rolling dork-fest, but if you're concerned about the M3 being too warm with the LCD-2, the OPA627 are supposedly warmer sounding than the default AD8610. i've only tried the AD8610 and AD8065, with a preference for the AD8610.
a CK2III can be biased deeper into Class A, but offboard heatsinks would be a must. the fact that the BJT output transistors have a positive temp coefficient would make this a little more tricky (thermal runaway) than compared to the negative temp coefficient of the output MOSFET transistors in the M3. if you wanted a little more headroom than the bog standard M3, just get taller on-board heatsinks and bias deeper into Class A. the M3 is an excellent and economical amp to drive piggy loads.
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