This is not a review as I don't take perfectly good working equipment apart, I just really wanted to let others know how pleased I am with my first DSO, it does everything I need and many things I just don't understand yet , such as FFT, I was hoping that let me see the response of some of my RF filters, I do enjoy been able to capture a wave form then look back at it later in more depth, I'm not sure how other fairly cheap DSO's compare to this, I like what I have and confidence knowing Siglent make DSO's for other companines such as Le Croy.