Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buyer Beware: Humax lowers your picture quality

What a wonderful idea this is - DVD recorder with TiVo. Unfortunately, there are a few things they don't tell you. If you have an older television, you may not have the necessary inputs/outputs to make the unit and/or all of the features work. My set was nine years old - I ended up buying a new one.However, the most upsetting part of this experience was the terrible graininess that showed up in the picture (on my new set!). I thought I had hooked the cables up incorrectly. I purchased the recommeded component cables for the "best video picture" and it was still dreadful. After talking to several technicians, I spoke with a supervisor who confirmed that, if you do not have a cable box, the unit significantly decreases the quality of the picture. The bigger your set, the more noticeable this change in quality is. I have a 27" which they characterized as "big".I returned the unit. Bless Sam's Club and their "satisfaction guaranteed" return policy!