Best Review Yamaha Aventage RX-A810 7.2 Network AV Receiver (Black). 2 year Guarantee + Free next working day delivery (most mainland UK addresses)!With so many on offer today, it is great to have a brand you can recognise. The Yamaha Aventage RX-A810 7.2 Network AV Receiver (Black). 2 year Guarantee + Free next working day delivery (most mainland UK addresses)! is certainly that and will be a great buy. For this price, the Yamaha Aventage RX-A810 7.2 Network AV Receiver (Black). 2 year Guarantee + Free next working day delivery (most mainland UK addresses)! comes highly respected and is a popular choice amongst many people.