He was instrumental in developing the previously undesirable technique of guitar amplifier feedback , and helped to popularize use of the wah - wah pedal in mainstream rock .
Hendrix favored overdriven amplifiers with high volume and gain .
Hendrix was instrumental in developing the previously undesirable technique of guitar amplifier feedback , and helped to popularize use of the wah - wah pedal in mainstream rock .
Hendrix favored overdriven amplifiers with high volume and gain .