Speaker sets the tone and color of the sound, and it is limited by how low it can go usually. Good sources are to have a refined high, show off dynamic as much as possible, and give out good signal/noise ratio. Amplification is taking the signal from source and push speaker honestly to express its tone. Sources and amp can only tune the speaker a little but still the color of the sound is determined majorly by speakers. You can't push sonus faber to sound like Martin Logan no matter what sources or amp you use, IMO, speaker carry the "color" of the sound.
Depending on what is missing to your ear, you fix that part. Gargage can come in from source, or amp, or your speaker.
Depending on what is missing to your ear, you fix that part. Gargage can come in from source, or amp, or your speaker.