Instruct: Classify the given customer review as either counterfactual or not counterfactual.
Query: I added these Polk R150 bookshelf speakers to my living room, powered them with an inexpensive miniature T-amp ([[ASIN:B0049P6OTI Lepai Tripath TA2020 Class-T Hi-Fi Audio Amplifier]]), and added an old powered subwoofer to complete a basic stereo system for watching TV, movies, and listening to music.