So, I finally setup the new decoder.
--> It is giving the same Picture Quality via its HDMI output.
--> Audio clarify of stereo type audio is very good comparing the previous decoder.
--> For Dolby 2.1 audio input, it is adding the base (sub woofer) audio to the stereo output which was not available in previous decoder (it was given only L & R output)
--> Has an option to pass the output as received/by converting into 5.1/by converting into 2.1.
--> No 5.1 simulation available as it was there in previous decoder but still the audio is good.
--> Previous decoder was having 5.1 analog output alone. This one is having 5.1 analog, VGA, optical SPDIF with HDMI output to connect to the TV again.
--> This is even having an headphone output (3.5 mm stereo)
--> Unlike previous decoder, all the connectors are at the backside of the hardware which makes its look better and also the wiring.
--> Along with this decoder, I bought one HDMI switcher that can take 3 HDMI input and one HDMI output.
--> The output of this switch is been connected to the newly bought decoder.
--> The HDMI switch is having a remote and a manual switch to switch between the HDMI inputs.
Some pics.
The Decoder:
The HDMI Switcher with IR sensor and Remote
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