Sony has announced two brand new AV receivers for 2013. Both the Sony
STR-DN840 and Sony STR-DN1040 feature a new design, uprgaded internal
components and a raft of connectivity features.

The STR-DN840, yours for $449 (or around £400 in the UK), is a seven-channel amp, with power weighing in at 95W per channel.

Decoding for high-def audio movie formats Dolby TrueHD and DTS HD
Master Audio is included, as is built-in Wi-Fi, Bluetooth and AirPlay
for wireless music streaming. File compatibility includes WAV, FLAC
while both amps can also handle high-res 24bit/192kHz content.

The STR-DN1040 at $599 (around £550) ups the ante with more power,
eight HDMI inputs, and 4K upscaling for feeding 4K pictures to a
compatible television such as Sony's 84in KD-84X9005 and upcoming 55in and 65in 4K sets, the XBR-55X900A and XBR-65X900A.

Both the Sony STR-DN840 and Sony STR-DN1040 go on sale in June.

http://www.whathifi.com/news/sony-launches-str-dn840-and-str-dn1040-av-receivers?utm_source=Silverpop&utm_medium=EMAIL&utm_campaign=WHFI%20ENews%20Bulletin%20%2830.05.2013%29&utm_content=article5_headline

where to buy it in Thailand?

where to buy it in Thailand?

Depends what you're talking about... The 55/65/84" 4K TV's are available (for order at least) from most Thai Sony retailers already, but you'd probably need to go to Singapore or Hong Kong for the Sony AVR's.