I have a pair of Martin Logan Sequel II speakers with Sonic Frontiers Line 1 and Power 1 amplification. I auditioned the BAT VK 3i and the Sonic Frontiers Line 1. Both units offer excellant quality, good value, and similiar prices and sound quality. After all of my searching for a tube preamp, my choices were between the BAT and the SF. I was in a quandry when it came time to purchase. Ultimately, my decision was made when I purchased a dealer's demo unit at an excellant price. I think you'll be happy with either one. Good luck!
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