Here are the specs I only see one diffrence between the two. The A51 seems to have an interal low freq. switch and the A51s has an external? Anyone use the A51s. Is the sound quailty similar to the A51?
Thanks
A-51 SPECIFICATIONS
TYPE: True Condenser Pressure Gradient Microphone
CAPSULE: 1" Diameter, Low Micron, Gold Vapor-Deposited Gradient Design
ELECTRONICS: Low Noise Discrete FET
FREQUENCY RANGE: 20 Hz to 20 kHz
SENSITIVITY: 15 mV/pA 9-36.5 = 1 V/pA
EQUIVALENT NOISE LEVEL: (A-Weighted per IEC 286-4) < 17db Typical
MAXIMUM SPL FOR THD: <1% (1 kHz) 130 dB
SWITCHABLE LOW FREQUENCY CUT-OFF: 100 Hz (Internal Switch) CONSTRUCTION: Heavy Duty Aircraft Grade Machined Brass; Durable Scratch Resistant Anodized Finish
WEIGHT: 470 grams / 1.03 lbs.
DIMENSIONS: 50 x 190 mm / 2" x 7.5"
OPERATING VOLTAGE: 48V Phantom Power
A-51s SPECIFICATIONS
TYPE: True Condenser Pressure Gradient Microphone
CAPSULE: 1" Diameter, Low Micron, Gold Vapor-Deposited Gradient Design
ELECTRONICS: Low Noise Discrete FET
FREQUENCY RANGE: 20 Hz to 20 kHz
SENSITIVITY: 15 mV/pA 9-36.5 = 1 V/pA
EQUIVALENT NOISE LEVEL: (A-Weighted per IEC 286-4) < 17db Typical
MAXIMUM SPL FOR THD: <0.5% (1 kHz) 140 dB
SWITCHABLE LOW FREQUENCY CUT-OFF: 100 Hz
SWITCHABLE PAD: - 10dB CONSTRUCTION: Heavy Duty Aircraft Grade Machined Brass with Durable Scratch Resistant Anodized Finish
WEIGHT: 470 grams / 1.03 lbs.
DIMENSIONS: 50 x 190 mm / 2 x 7.5
OPERATING VOLTAGE: 48 V Phantom Power