Comparison of CAD Audio GXL3000 and Sterling Audio ST51 FET

Attribute	CAD Audio GXL3000 ×	Sterling Audio ST51 FET ×
Self-Noise (dB)	20	22
Impedance (Ohm)	200	200
Sound Pressure Level (SPL) (dB)	135	134
Length (mm)	194	190
Diaphragm Gauge (micron)	6	6
Interfaces	3-pin XLR male	3-pin XLR male
Diaphragm Diameter (mm)	28	25
Range (Hz)	35 - 20,000	20 - 18,000
Pads	-10dB	-
Pickup Pattern	Bidirectional Cardioid Omnidirectional	Cardioid
Sensitivity (mV/Pa)	13	30
Brand	CAD Audio	Sterling Audio
Name	CAD Audio GXL3000	Sterling Audio ST51 FET
Weight (g)	550	499
SPL/Self-Noise Ratio	6.75	6.09
Filters	HPF: -6dB/octave @ 100Hz	-
Max Diameter (mm)	45	45
Capsule Diameter (mm)	35	33
Requires Phantom Power	+	+
Phantom Voltage (V)	48.00	48.00