Cheaper amps are really weak when it comes to very high and very low end frequencies. The pickups also need to be good to transmit the signal. You can try upgrading your equipment or maybe getting an effects box like an RP200, or something else with good equilization. The more bass, the fatter the sound. Too much bass can be muddy, though, so for the fattest yet cleanest sound boost your Low Mids. Also boost your Highs, but not as much as your mids. Something like Bass 5, Low Mid 6.5, High Mids 8.5, High 5.5. Mixed with smooth distortion and some chorus this will give a smooth, fat, nearly violin like tone throughout the tonal range of your guitar.