I give all 5 star for this item attribute , but only 3 star in general rating and here be the reason why . I have 4 FIOS Cable box in my house and they be , of course , in different room and I be use a regular splitter for this . you can imagine how many cable I have and how far they be go . so hd picture be degrade on two of my tv - there be pixelation and sound be be lose . I go look for a good signal booster and find this one . I get it , install it and it be perfect - no more signal loss and picture and sound be like it be a direct cable connection . BUT , to my big disappointment on the two cable box that be connect to this booster I be no longer get the connection to my dvr , connection to all the Verizon FIOS service from the box get lose and I could not get any channel lineup . so I do further research and stumble upon this review : amazon.com\/review\/rk8zfk6zyl6jy\/ref=cm_cr_pr_viewpnt#rk8zfk6zyl6jy apparently for the Cable tv service to work you need a booster with `` active return Cable Modem boost '' , which be this one :  Motorola Signal Booster 4-Port Cable Modem TV HDTV amplifier with active return Cable Modem boost  but the bda-k4 \/ ra model sell for the exact same price as the bda-s4 , so I be return this one and get the one with active return Model Boost . I will try to review it after I get it and test it .