Several years back, when BA wanted to step up their game a few notches, they came up with their flagship M-Series. They had them available for a complete 7.1 surround sound HT system. These were beautifully made, WAF, very high, gloss piano black, compact, and expensive. Not so much for audio speakers, but by the time you figured in the center channel, the surround's and sub, you were north of six grand. To help the HT system sell, they cut the prices of the three different front speaker's in half. I bought one pair of their M-350's for $1,250 instead of $2,500. Later, I purchased a pair of the M340's and I managed to find an open box M-Center. This still did not fly and BA quit the line and went back to less expensive speaker's. That was before completely going away altogether. But, I considered their M-Series to like a little brother to Polk's LSiM series. I ended up using their M-350's are rear's for the LSiM707's front mains. That turned out to be a beautiful match.