Hello Alexc, I hope I got this right. The Vk75 stereo is $6ooo: the mono-VK150 $12,ooo: VK75se stereo $8500: mono-VK150se $17,000: To upgrade a VK60 to a VK60se is $2500 per-amp. I own the mono-VK60's. I have to decide what upgrade path to take. If the VK150se sounds as good as I've been told I know that's where I'll want to be. Two months ago I bought a pair of Eidolons so I have to wait and save. I already feel that in many aspects that the mono-VK60's is one of the best sounding amps at any price. So I'm really looking foward to hearing the new BAT amps. The se-version of the amps is supposed to be every bit as profound in performance as the 50se was over the 5i. Happy listening Alexc! Tom
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