Purchased PHILIPS 55OLED803/12 55" Smart 4K Ultra HD HDR OLED TV for £1500. 8 weeks old and been in constant contact with Philips regarding constant reverberation on bass sounds. After numerous updates and reinstalls they give in and sent 2 engineers. Set was taken apart and found to be missing 2 screws from subwoofer mount, put back together and problem still evident (whether these 2 screws needed to be there I do not know). Taken apart again and anything that was lose was taped down. Put back together and still on demo mode the problem persisted. Excuse being the demo was producing too much base. Engineers left. Richer sounds display tv on demo mode is perfect at full volume, Currys unfortunately had none on display so had to travel 12 miles to find one to look at. I now have all wiring inside with extra tape around them (is this now a fire hazard, as it wasn't needed at manufacturing stage). Had to watch tv over the weekend with problem still there so contacted Philips again who told me to contact Currys. Currys now want to take the set for a week to inspect it, which means a 2nd repair, under the consumer rights act this should not be allowed and tv should just be replaced. The tv is excellent barring this awful noise it makes. I have the repair notes from Philips engineers who state there is a problem. Yet Currys says they should have done the repair. AAAARGH. Pushed from one to the other, and still no joy. Will never use either company again due to this mess. How Currys get away with this I will never know. Will in future stick to John Lewis who in the past I have had zero problems dealing with. I do hope Philips and Currys read these reviews and act upon them as it is their reputation that is being muddied.