I have a few LPs made in the mid 70s by Japan Denon. Despite a slight coarsenes they have a more full bodied midrange and what I might term meatier sound than I hear with contemporaneous LPs derived from the Sony Philips PCM CD format that appeared in the early 80s. Denon developed several digital encoders in the 1970s, the DN-023R and DN-034. My question is whether the Denon PCM process had any significant differences from the later Sony Philips format? I understand that Denon had a slightly different sampling rate and bit rate ~47khz /14-15.5 bits. But were there other encoder differences which might account for my perception of Denon LPs as more realistic than early Sony/Philips digital LPs or is it just better/different mastering?