Help Owner Of An Onkyo 505 Needs An Advise

[Octavio]

Hi there, first of all excuseme for my poor english.

The question is this:

I own a Onkyo 505 receiver.

I own a Sony BDP-S300.

Thru analogs outputs I can enjoy PCM and Dolby TrueHD, (although not DTS MA) and only in 5.1

I am planning to buy a Playstation 3 but I've heard that PS3 when connected with an old-fashioned AV receiver as mine the audio comes only as "normal" DD or DTS, no hi-def sound, even if the audio is sent by HDMI

PS3 doen's have multichannel outputs so I can't use that. But lately I've been reading that PS3 indeed decodes Dolby TruHD and DTS MA and sends the audio as LPCM thru HDMI.

Is that true? If so, my old onkyo could do the work or I still would need to upgrade my AV receiver in order to get real Hi-def sound.

Thank you in advance for your kind replies.