went to richer sounds for a hi fi system : explained that we play 80,s music and want a system that can play at a high level; Purchased a set B&W 603 speakers -a cambridge 851 w - a cambridge 851n and a cambridge 851c and a dahli 15 sub- amplifier has blown up had this repaired richer sounds charged for this as i took the lid off to see if there was a fuse inside whilst the shop was in lockdown number months- informed i blew up as turning up volume past setting 25 - not advisable now informed not turn volume dial up past 25 i had on volume 26 / 27 and and was not clipping out at 30 - explained i wanted a second set speakers in another room and was sold a set of focal 948 - but these required a set of tibo pa150 (1 amp per speaker)- came home plugged them in - and drivers on speakers connected to the tibo's cut out constantly when turned up - any set of speakers connected to the tibos could not handle being turned up. disconnected tibos tried connecting two sets speakers to one cambridge amp - cambridge amp just overheats in under half hour - now got two sets speakers - only one set can be used at a time and have keep volume down - returned tibos and gonna to seek advice from another company and start again - if you want to listen to classical music great kit but nothing 80