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Sterling Audio ST44 Tube

Detachable-Capsule Tube Condenser Microphone

The ST44 is a small-diaphragm tube condenser. It appears to be identical to the Groove Tubes GT-44, with the exception that the GT-44 had interchangeable capsules, whereas the ST44 is a fixed Cardioid microphone.

Both microphones use 6-micron, 19mm capsules, subminiature GT6205 pentode tubes, and nickel-plated brass bodies. Both incorporate a switchable high-pass filter and a -15dB pad.

The ST44 employs a hybrid impedance circuit, with a FET front end followed by the pentode tube. The microphone uses an output transformer.

The ST44 ships with its power supply, both power and audio cables, the SM3 shockmount, and a compact aluminum case for the microphone.

According to Sterling Audio, the ST44 was discontinued in 2012.

Permalink: Sterling Audio ST44

Specifications

Compatible Capsules

Groove Tubes C1 Cardioid 19mm Cardioid capsule Sensitivity: 28 mV/Pa CHARTFreq. Resp.: 20 - 20,000 Hz MSRP: $99 | discontinued Groove Tubes C2 Hyper 19mm Hypercardioid capsule Sensitivity: 28 mV/Pa CHARTFreq. Resp.: 20 - 20,000 Hz MSRP: $99 | discontinued Groove Tubes C3 Omni 19mm Omnidirectional capsule Sensitivity: 28 mV/Pa CHARTFreq. Resp.: 20 - 20,000 Hz MSRP: $99 | discontinued Sterling Audio ST44 Cardioid 19mm Omnidirectional capsule Sensitivity: 28 mV/Pa CHARTFreq. Resp.: 20 - 20,000 Hz MSRP: n/a | Still In Production

Pads & Filters	Impedance	SPL/Noise
Diaphragm diameter: 19mm Capsule diameter: 21mm Diaphragm gauge: 6 microns	200 Ohms (Low)	Max SPL: 145 dB Self-noise: 20.0 dB(A)

Weight	Length	Max Diameter	Interface(s)
n/a	187mm (7.36'')	28mm (1.10'')	3-pin XLR male (1)

Power Specifications
Includes tube power supply

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