Comparison of AKG Acoustics P420 and Sterling Audio ST51 FET

Attribute	AKG Acoustics P420 ×	Sterling Audio ST51 FET ×
SPL/Self-Noise Ratio	10.33	6.09
Sound Pressure Level (SPL) (dB)	155	134
Self-Noise (dB)	15	22
Diaphragm Diameter (mm)	26.7	25
Impedance (Ohm)	200	200
Requires Phantom Power	+	+
Capsule Diameter (mm)	34	33
Range (Hz)	35 - 18,000	20 - 18,000
Pads	-20dB	-
Pickup Pattern	Bidirectional Cardioid Omnidirectional	Cardioid
Sensitivity (mV/Pa)	28	30
Brand	AKG Acoustics	Sterling Audio
Name	AKG Acoustics P420	Sterling Audio ST51 FET
Weight (g)	530	499
Max Diameter (mm)	53	45
Filters	HPF: -12dB/octave @ 300Hz	-
Interfaces	3-pin XLR male	3-pin XLR male
Length (mm)	165	190
Diaphragm Gauge (micron)	-	6
Phantom Voltage (V)	48.00	48.00