philips amplifier 550 and speakers 22rh457 .1977 - YouTube
Amazon.com: 60W 12V 5A AC/DC Adapter Replacement for Philips Respironics Pro M Series 1015642 CPAP Machine 50 Series System One REMstar Auto A-Flex 550 REF 550P 1051158 1024563 AA24750L 001 1058190 PSU : Health & Household
Amplificador Philips 550 años 70 de segunda mano por 145 EUR en Granada en WALLAPOP