Philips AG-9014 and AD-5046 a 1959 Tube set with 800ohm speakers - YouTube
PHILIPS AG9014 2X10W HIFI STEREO AMPLIFIER WITH 2XEF86,4XECC83,4XEL86 1959 SM Service Manual download, schematics, eeprom, repair info for electronics experts
Philips AG 9014 Stereo tube amplifier test OTL 800 Ohm - YouTube