Description
Andrea USB-SA Premium External USB Stereo Sound Card for Stenomask Voice Writers
A Martel-recommended USB audio adapter for court reporters and voice writers who want a cleaner, more reliable computer audio path when using a stenomask, microphone, headset, or speaker setup.
Why Court Reporters Use It
The Andrea USB-SA Premium External USB Stereo Sound Card is a professional external USB audio adapter that helps court reporters, voice writers, and stenomask users improve the computer audio path used for microphone input and speaker output.
For a court reporter using a stenomask, reliable audio matters. A cleaner microphone input can help support more consistent speech capture, transcription, remote proceedings, VoIP, and speech recognition workflows.
What Andrea Says It Does
Andrea Communications USB-SA eliminates the noise problems that are inherent in most standard, off-the-shelf computers. Often placed in close proximity to components such as the power supply and processors, internal sound cards or integrated audio systems can generate audible noise.
The USB-SA uses high quality digital circuitry to bypass the computer's internal sound system, converting the analog signal to digital. The result is increased clarity and performance of both the stereo microphone input and stereo speaker output for all digital audio applications including VoIP and speech recognition programs.
Simple Connection Guide
Microphone Input
Microphone Jack 3.5mm: Pink (PMS 701C)
Speaker Output
Speaker Jack 3.5mm: Green (PMS 365C)
External USB Sound Card
Plug the USB-SA into an available USB port on your desktop or laptop computer. MacBook computers with USB-C ports require a USB Type-C adapter for USB connectivity.
Overview
Andrea’s USB-SA external digital sound card eliminates computer noise floor problems as it utilizes high quality digital circuitry to bypass your desktop or laptop computer’s sound system.
This device provides increased fidelity and performance of stereo microphone input and stereo speaker output for all of your computer audio applications.
Features
Why Martel Recommends It for Voice Writing Setups
For stenomask voice writers, the computer’s built-in audio jack can be one of the weakest parts of the setup. The Andrea USB-SA gives the user an external USB audio path with stereo microphone input and stereo speaker output, making it a smart accessory for court reporting, speech recognition, VoIP, remote proceedings, and professional computer audio use.
Specifications
Connections
Microphone Jack 3.5mm: Pink (PMS 701C)
Speaker Jack 3.5mm: Green (PMS 365C)
Operation
Power: USB
Microphone Input: 2 Channel Stereo
Audio Output: 2 Channel Stereo
Sampling Rate: 48K / 44.1K Hz / 16K / 8K
Power Supply
Supply Voltage: 4.5 - 5.5 VDC
Total Power Consumption: 120 mA
Microphone Input
A/D Conversion Resolution: 16 bit
THD + N: -84 dB
Supply Bias Resistor: 2.2K Ohm @ 3.3VDC
Frequency Response: 20-20,000 Hz
Input Range: 0 - 1.25 Vrms
Dynamic Range: 95 dB
Record Gain Range: -6 to 33 dB
Stereo Speaker Output
D/A Conversion Resolution: 16 bit
THD + N: -91 dB
Frequency Response: 20-20,000 Hz
Output Load: 32 Ohm
Output Voltage: 1.27 Vrms
Frequently Asked Questions
Is the Andrea USB-SA made only for stenomasks?
No. The Andrea USB-SA is a premium external USB stereo sound card. Martel recommends it for many stenomask voice writing setups because it provides a clean external USB audio path with microphone input and speaker output.
Which jack is for the microphone or stenomask?
The pink 3.5mm jack is the microphone input.
Which jack is for speakers or headphones?
The green 3.5mm jack is the speaker output.
What computers is it compatible with?
Andrea lists compatibility with Windows 10, Windows 11, and Apple Mac OS X 10.5 and up. MacBook computers with USB-C ports require a USB Type-C adapter for USB connectivity.
Is it portable?
Yes. The small form factor is compact and portable, making it easy to keep with a stenomask, laptop bag, headset, microphone, or court reporting setup.
