1 x 1 Mic/Line Preamp

Ideal Use Cases

The AtlasIED TSD-ML11 is a 1 x 1 mic/line preamp designed for standalone microphone preamplification and applications requiring mute or push-to-talk microphone functions. Its 46dB mic gain and balanced 10mV (-40dBV) mic input rating support low-level microphone signals, while the supplied line-level specifications address line-oriented integration. Defeatable 24VDC phantom power can be enabled when required or disabled when it is not needed. These capabilities make the TSD-ML11 suitable for focused, single-channel systems that need microphone gain, line interfacing, or controlled microphone operation.

Why Choose This Model

High headroom and low noise are the central performance qualities identified for this preamp. The published specifications provide concrete references for evaluating it: frequency response extends from 20Hz to 20kHz, total harmonic distortion is rated at .06% at 1kHz, and the signal-to-noise ratio is listed as 85dBV for line-to-line operation and 70dBV for mic-to-line operation. The TSD-ML11 also supports balanced and unbalanced configurations, giving installers defined impedance values for either signal arrangement. Its focused 1 x 1 format keeps the model centered on a single audio path.

Installation and Integration

System matching begins with the published impedance ratings. Input impedance is 1.2KΩ balanced or 600Ω unbalanced, while output impedance is 300Ω balanced or 150Ω unbalanced. The mic input is specified at 10mV (-40dBV) balanced with 46dB gain. Supplied line-level data lists 1V (0dBV) balanced and 2V (+6dBV) balanced output. The unit requires 24VDC power at 100mA and has 24V voltage compatibility. Its compact enclosure measures 4 inches wide, 2.5 inches deep, and 1.5 inches high, equivalent to 10.16 x 6.35 x 3.81 cm. At 6 ounces or 0.165 kg, it adds minimal physical weight to an installation.

Performance Highlights

The 20Hz to 20kHz frequency response provides a clearly specified operating range for microphone and line signals. For level planning, the mic path combines a balanced 10mV (-40dBV) input rating with 46dB of gain. Line-to-line and mic-to-line signal-to-noise figures are independently documented, allowing the appropriate rating to be referenced for each application. The .06% THD specification at 1kHz supplies an additional measure of signal performance. Defeatable 24VDC phantom power provides control over whether phantom power is active for the connected microphone setup.

What Makes It Different

The TSD-ML11 combines preamplification with microphone-control functions rather than being described solely as a gain stage. It is specifically identified for applications needing mute and push-to-talk operation, as well as use as a standalone preamp. That combination is supported by balanced and unbalanced impedance specifications, selectable phantom-power use, and documented mic and line performance figures. The result is a specialized single-channel model whose purpose, gain, operating levels, power requirement, and physical dimensions are all defined for integration planning.

Final Assessment

The AtlasIED TSD-ML11 is best considered when a system requires one mic/line preamp channel with 46dB mic gain, mute and push-to-talk functionality, and defeatable 24VDC phantom power. Its 20Hz to 20kHz response, separate signal-to-noise ratings, balanced and unbalanced impedance values, and compact 4 x 2.5 x 1.5-inch dimensions provide the key information needed for system matching. Power requirements are 24VDC at 100mA, and the stated warranty period is 36 months from the date of purchase.