Tuner, all speaker channels, sub channel, HDMI, optical, and RCA functioning perfectly. I do not have the remote for this receiver.
PIONEER VSX-521-K AV Receiver 5.1 Ch HDMI RECEIVER - TESTED WORKING!
Pioneer Vsx-521 Black, 015000200868
Tested and works great. Bluetooth ready.
Pioneer VSX-521 5.1 Ch HDMI Home Theater Surround Sound Receiver
Pioneer Vsx-521 Black, 015000200868
pioneer vsx 521
Pioneer 5.1 Channel Home Theater Systems
Pioneer VSX-521 review: Pioneer VSX-521 - CNET
Pioneer Elite VSX 521 5.1 Channel 110 Watt Receiver for sale online
Pioneer Vsx-521 Black, 015000200868
Pioneer VSX-521 Receiver. Bluetooth integration (requires optional optional Pioneer adapter). 1080p-compatible HDMI digital audio/video switching (4
Pioneer VSX-521 5.1-Ch 550 Watts Amplifier HDMI AV Home Theater Receiver 3D
Pioneer VSX-521-K 5.1 Home Theater Receiver, Glossy Black (Discontinued by Manufacturer) : Electronics