I haven't tried my RB sa HT. Ginagamit ko lang sya sa stereo apps. Pero i have already tried the rf10 and the B2 (ata), there is a big difference for me especially sa mids & lows. Napayatan ako and lacks detail ang rf10 & B2 (compared to RB81) due to limitations in driver sizes. Plus IFAIK, mas-sensitive ang mga reference series.