An Inside Look at the Classic Tones of the Ampeg Heritage B-15   Ampeg GVT Series Guitar Amps - Tone Sample - Rock Ampeg PF-500 Bass Head - Tone Settings - Rock   Ampeg GVT Series Guitar Amps - Tone Sample - Clean Ampeg PF-500 Bass Head - Tone Settings - Fretless   Ampeg GVT Series Guitar Amplifiers Demo Ampeg PF-500 Bass Head - Tone Settings - Slap