- For 4-string bass guitar - Calibrated Set - Passive operation - 1/4 " Alnico V magnets - High output - DC resistance neck: 12.5 kOhm - DC resistance bridge: 14.61 kOhm - Resonant frequency neck: 10.2 kHz - Bridge resonant frequency: 3.9 kHz - Made in USA EUR 255.00 - See more - Buy online