STM-DA3 Microphone Level Distribution Amplifier - 1x3

• Feed 1 Microphone to 3 Microphone Inputs
• Electrical and Audio Isolation
• Studio Quality Low‑Noise, Low‑Distortion Performance
• Excellent Phase Response
• Versatility of STICK‑ON® Compactness

The STM‑DA3 is designed for use in quality commercial sound, broadcast and recording applications. The 1.2 kΩ balanced input accepts a wide variety of microphone input levels without loading professional low impedance microphones. A multi‑turn trimmer is user adjustable for either gain or loss in order to match the facility standard microphone levels. Three balanced outputs provide nearly total isolation between the output lines. Unlike mic‑splitting transformer systems, the STM‑DA3 also provides audio isolation. In fact, the audio isolation is so good that a +4 dBu signal fed into one output is still below the noise floor on the adjacent output. Loading of one output including a direct short, has no effect on the other outputs.

The STM‑DA3 is built on the electrical architecture of RDL's low‑noise studio quality mic preamplifiers. Dynamic or condenser microphones may be used with the STM‑DA3. Standard 24 V phantom is supplied to the input when the supply voltage is connected to the PHM terminal. Optimum operating level is set using RDL's unique Dual‑LED VU meter, located adjacent to the terminal block. A green LED illuminates at 15 dB below optimum level. The intensity of the green LED progresses from minimum to full intensity over a 15 dB range. The adjacent red LED illuminates when the operating level exceeds the optimum level. This makes the STM‑DA3 easy to set up without any external test equipment, and operating levels may be monitored at the module

For Mic to Line level distribution, use the RDL STM‑LDA3.

Mounting Accessories:

MB-1
Mounting Kit - RU, ST and TX Series

MB-3
Kit to Mount ST, TX Series Modules on FP Panel

MSR-1
Snap Rail Adapter - STICK-ON Series

RC-1U
19" Universal Rack Chassis - RU, ST and TX Series

RU-RA3A
19" Rack Mount for 3 RACK-UP Series Products

SMK-12
STICK-ON Mounting Plate

SR-10
STICK-ON Series 19" Mounting Rack - 10 modules

SR-12A
STICK-ON Series 19" Mounting Rack - 12 modules

SR-4
STICK-ON Series Mounting Rack - 7 modules

STR-19A
STICK-ON Series 19" Racking System - 12 modules

STR-19B
STICK-ON Series 19" Racking System - 10 modules

UC-1
Single Wide Enclosure - RACK-UP Mounts

UC-2
Double Wide Enclosure - RACK-UP Mounts

WDG1
Table Top Chassis for RU, ST and TX Series

DRA-35S
STICK-ON DIN Rail Adapter - 1 module

DRA-35S6
STICK-ON DIN Rail Adapter - 6 modules

ST-RRB1
Rear rack rail mounting kit for any STICK-ON module

General Accessories:

DTB
STICK-ON® Series Detachable Terminal Block

AMS
Accessory Mounting System

Related Products:

RU-MLD4
Microphone / Line Distribution Amplifier - 1x4

STM-LDA3
Studio Quality Microphone Preamplifier with phantom - 3 line outputs