I have not heard BAT VK-600MSE and want to hear them. I have heard Halcro DM-88 compared to VTL Siegfried and thought Halcro sounded dry, analytical and totally unmusical. VTL Siegfried stomped all over Halcro. I own MBL9007 and this is the best solid state amp I've ever owned. It has much of the very best tube amplfier characteristics with warm, open and musical sound while having best of solid state fast, tight and controlled bass with weight. I used to own Theta Digital Citadel amplifiers as well and in comparison MBL9007 is night and day better. It would be interesting to compare MBL9007 with BAT VK600 MSE.