Yes - but with the bryston 4b-st and the avi preamp in an all naim top of the range system at two seperate dealers (one of which used atc speakers and not naim). The 4b sounds identical to the 3b just with double the power and would cost about £300 more second hand bringing the price to £1500. The naim pre / power was blown away, using naim cdp and speakers and swapping out the 552 / 500. The naim dealer had the bryston provided along with the pmcs he was stocking - unsurprisingly he chose not to stock the bryston after that dem!