Hi together, I haven’t had a real sound in the car until recently. Then I got a small blue point power amplifier (with ridiculous 4x 30 watts) and 2 loudspeakers (helix hxs 169, 100 watts) for the rear shelf “collected together” in the basement etc.. Must say that the speakers release quite a lot of pressure, at least much better than just the original sound.. But now I want to start investing a little (I’m a poor high school graduate) and thought of a power amplifier for max. 150 € .. What can you recommend to me? Since I want to connect a bass box later it should already be 4 channels .. What can you recommend to me? I know that the 150€ are quite little, but I can’t spare any more at the moment..