Difference between HDA-18A and HDA-15A 5.1 channel audio gear decoder

[pondpaka]

As I am looking for good quality 5.1 channel Audio gear decoder, I found in the website digitalbay.in two decoders namely 1) HDCVT Audio Decoder (HDA-18A) and 2) HDCVT Audio Decoder (HDA-15A).
I will be very happy if any learned member of this forum enlighten/elaborate the difference between the aforesaid audio decoders, and which will be good enough before purchasing the device from their site.

 

[baijuxavior]

Both are same in functioning. I contacted the seller once and if I remember it right, he said the higher model has a remote control. If you look at the pictures, the higher model uses 5.1 RCA output where as the lower one uses 3 3.5mm output.

 

[pondpaka]

Both are same in functioning. I contacted the seller once and if I remember it right, he said the higher model has a remote control. If you look at the pictures, the higher model uses 5.1 RCA output where as the lower one uses 3 3.5mm output.

Many thanks dear for your valuable comments.