1. The problem statement, all variables and given/known data The question states that a 3 stage amplifier needs to be designed with a 2W rms to an 8ohm load. the amplifier must consist of a pre amp stage and a power stage. (using only bjt's) 2. Relevant equations Up till now we have learnt about small signal model, DC biasing, ac biasing. in terms of knowledge i am still in my early stages 3. The attempt at a solution well i started off using dc biasing in each stage whilst keeping in mind that a buffer stage had to have a high input but low output impeadance, the gain stage was the other way around. for now in the design i left out anything to remove the crossover distortion since i wanted to get it working before adding any further complications. despite this there is still something wrong with the gain stage, the simulation is showing a gain of 3 instead of the 50 aimed for and the signal is looking more like a squarewave than a sine wave. Any helpful points as to the approach one should take to designing this circuit is appreciated, since i'm still green when it comes to this i might have missed a crucial step. also the circuit presented is the last one i calculated, if someone can see what is wrong in it, please comment.