(0)

Questions? Call Us:
866-334-8859

Radio Design Labs STM-2X
Switchable Low-Noise Microphone Preamplifier

OUR PART #  STM2X

Our Price: $164.29
List Price: $219.77
You save 25%! (Low Price Guarantee)
Usually ships in 7-14 business days.
Need it sooner? Call us!

Recommended Accessories

Radio Design Labs' STM-2X is the ideal choice in many installations where a microphone preamplifier is required, and is the ideal choice where either a toggle-type switch or push-to-talk switch is to be provided for microphone control, particularly if condenser microphones are used.

The STM-2X features a balanced mic-level input, and both a line-level and mic-level output. The input and each output may be wired balanced or unbalanced. A 25-turn trimming potentiometer is provided for precise level adjustment whether the module is being used as a mic-level switch, or as a switched mic-to-line preamplifier. A phantom voltage input is provided for use with condenser mics. The 24 Vdc power source is typically used as the phantom supply, requiring no other external phantom supply. These features permit the STM-2X to be used as a manually switched mic preamp, or as a mic-level remote switch for dynamic or condenser microphones. The mic-level output from the STM-2X may be safely connected to other equipment mic inputs which produce phantom voltage.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

It is frequently necessary to provide user accessible switching for condenser microphones. This may include a simple mic on/off switch, push-to-talk or a ‘cough’ button switch. Conventional methods of either shorting or opening the microphone line results in loud audible ‘pops’ due to the phantom voltage on the mic line. For these applications, the STM-2X provides quiet, solid state ‘soft-switching’ with no disruption to the phantom voltage. The output of the STM-2X is turned ‘on’ by grounding the control terminal, either by a switch or by any of the SLAVE terminals from other RDL products.

Stick-On Mounting Rack for 10 UnitsRadio Design Labs SR-10 Stick-On Mounting Rack for 10 Units

Radio Design Labs' STR-10 Racking System holds up to 10 STICK-ON units.  It holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or the top (depending on where the adjustment is located on ...

In Stock

Free Shipping Available

Our Price:$64.12List Price: $85.76You save 25%!

24 VDC 500mA Switching Power SupplyRadio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply

Radio Design Labs' PS-24AS is a 24 Vdc switching power supply with a North American AC plug.  500 mA, dc plug.Specifications: Input: 100 to 240 VACOutput: 24 Vdc, 500 mA (UL, CSA)Dimensions: 1.65" x 2.75" x 1.45" (4.2 x 7 x 3.7 ...

In Stock

Our Price:$22.93List Price: $30.67You save 25%!

Din Rail Adaptor for STICK-ON Radio Design Labs DRA-35S Din Rail Adaptor for STICK-ON

The DRA-35S is a 35 mm DIN rail mounting bracket that provides positive mounting for any RDL STICK-ON® module. The oblique mounting angle of the DRA-35S allows an installer to mount several STICK-ON modules to a single DIN rail. Access to ...

In Stock

Our Price:$19.02List Price: $22.44You save 15%!

Kit to Mount ST, TX Series Modules on FP PanelRadio Design Labs MB3-RDL Kit to Mount ST, TX Series Modules on FP Panel

TX or STICK-ON Module fastens to MB-3 which slides into FP-RRA/H track.

In Stock

Our Price:$5.01List Price: $6.70You save 25%!

Mounting Kit for STICK-ON, TX, or Rack-Up moduleRadio Design Labs MB1-RDL Mounting Kit for STICK-ON, TX, or Rack-Up module

Two mounting brackets mounts a STICK-ON, TX, or Rack-Up module to a flat surface.

In Stock

Our Price:$3.39List Price: $4.00You save 15%!

Rackmount Kit for 10 Stick-On UnitsRadio Design Labs STR-19B Rackmount Kit for 10 Stick-On Units

Radio Design Labs' STR-19B Racking System holds up to 10 STICK-ON unitss in a 19 inch rack and only occupies two rack spaces. The STR-19B holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Free Shipping Available

Our Price:$159.34List Price: $213.14You save 25%!

Rackmount System for 12 Stick-On UnitsRadio Design Labs STR-19A Rackmount System for 12 Stick-On Units

Radio Design Labs' STR-19A Racking System holds up to 12 STICK-ONs in a 19" rack and only occupies two rack spaces.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Free Shipping Available

Our Price:$134.02List Price: $179.28You save 25%!

Single RACK-UP Mounting Bay Utility ChassisRadio Design Labs UC-1 Single RACK-UP Mounting Bay Utility Chassis

Radio Design Labs' UC-1 is an ULTRASTYLE design tabletop chassis for mounting RDL modules and accessories. The front panel features a single RACK-UP mounting bay. The rear panel has an identical mounting bay and is supplied with matching ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$84.01List Price: $112.37You save 25%!

Mounting Frame for Stick/TXRadio Design Labs SR-4 Mounting Frame for Stick/TX

Radio Design Labs' SR-4 is a universal module chassis that can mount to a backboard, wall or nearly any other support. It provides mounting for 4 STICK-ON power amplifiers or 7 standard STICK-ON modules. TX ™ modules may also be mounted. ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$83.21List Price: $111.30You save 25%!

STICK-ON Series 19"W Mounting Rack for up to12 ModulesRadio Design Labs SR-12A STICK-ON Series 19"W Mounting Rack for up to12 Modules

Radio Design Labs' SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$64.12List Price: $85.76You save 25%!

Mounting Strip for STICK-ON UnitsRadio Design Labs Smk 12 Mounting Strip for STICK-ON Units

The SMK-12 allows removable surface (up to 6 units) or edge (typically 12, max. 16) mounting of STICK-ON units. They can be fastened to its surface using screws or adhesive foam pads.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$27.45List Price: $36.72You save 25%!

Detachable Terminal BlockRadio Design Labs Dtb Rdl Detachable Terminal Block

Use DTB's to quickly detach and reattach wiring harness to STICK-ON units.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$6.77List Price: $8.00You save 15%!

Radio Design Labs STM-2X
Switchable Low-Noise Microphone Preamplifier

OUR PART #  STM2X

Product Information:

Radio Design Labs' STM-2X is the ideal choice in many installations where a microphone preamplifier is required, and is the ideal choice where either a toggle-type switch or push-to-talk switch is to be provided for microphone control, particularly if condenser microphones are used.

The STM-2X features a balanced mic-level input, and both a line-level and mic-level output. The input and each output may be wired balanced or unbalanced. A 25-turn trimming potentiometer is provided for precise level adjustment whether the module is being used as a mic-level switch, or as a switched mic-to-line preamplifier. A phantom voltage input is provided for use with condenser mics. The 24 Vdc power source is typically used as the phantom supply, requiring no other external phantom supply. These features permit the STM-2X to be used as a manually switched mic preamp, or as a mic-level remote switch for dynamic or condenser microphones. The mic-level output from the STM-2X may be safely connected to other equipment mic inputs which produce phantom voltage.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

It is frequently necessary to provide user accessible switching for condenser microphones. This may include a simple mic on/off switch, push-to-talk or a ‘cough’ button switch. Conventional methods of either shorting or opening the microphone line results in loud audible ‘pops’ due to the phantom voltage on the mic line. For these applications, the STM-2X provides quiet, solid state ‘soft-switching’ with no disruption to the phantom voltage. The output of the STM-2X is turned ‘on’ by grounding the control terminal, either by a switch or by any of the SLAVE terminals from other RDL products.

Stick-On Mounting Rack for 10 UnitsRadio Design Labs SR-10 Stick-On Mounting Rack for 10 Units

Radio Design Labs' STR-10 Racking System holds up to 10 STICK-ON units.  It holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or the top (depending on where the adjustment is located on ...

In Stock

Free Shipping Available

Our Price:$64.12List Price: $85.76You save 25%!

24 VDC 500mA Switching Power SupplyRadio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply

Radio Design Labs' PS-24AS is a 24 Vdc switching power supply with a North American AC plug.  500 mA, dc plug.Specifications: Input: 100 to 240 VACOutput: 24 Vdc, 500 mA (UL, CSA)Dimensions: 1.65" x 2.75" x 1.45" (4.2 x 7 x 3.7 ...

In Stock

Our Price:$22.93List Price: $30.67You save 25%!

Din Rail Adaptor for STICK-ON Radio Design Labs DRA-35S Din Rail Adaptor for STICK-ON

The DRA-35S is a 35 mm DIN rail mounting bracket that provides positive mounting for any RDL STICK-ON® module. The oblique mounting angle of the DRA-35S allows an installer to mount several STICK-ON modules to a single DIN rail. Access to ...

In Stock

Our Price:$19.02List Price: $22.44You save 15%!

Kit to Mount ST, TX Series Modules on FP PanelRadio Design Labs MB3-RDL Kit to Mount ST, TX Series Modules on FP Panel

TX or STICK-ON Module fastens to MB-3 which slides into FP-RRA/H track.

In Stock

Our Price:$5.01List Price: $6.70You save 25%!

Mounting Kit for STICK-ON, TX, or Rack-Up moduleRadio Design Labs MB1-RDL Mounting Kit for STICK-ON, TX, or Rack-Up module

Two mounting brackets mounts a STICK-ON, TX, or Rack-Up module to a flat surface.

In Stock

Our Price:$3.39List Price: $4.00You save 15%!

Rackmount Kit for 10 Stick-On UnitsRadio Design Labs STR-19B Rackmount Kit for 10 Stick-On Units

Radio Design Labs' STR-19B Racking System holds up to 10 STICK-ON unitss in a 19 inch rack and only occupies two rack spaces. The STR-19B holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Free Shipping Available

Our Price:$159.34List Price: $213.14You save 25%!

Rackmount System for 12 Stick-On UnitsRadio Design Labs STR-19A Rackmount System for 12 Stick-On Units

Radio Design Labs' STR-19A Racking System holds up to 12 STICK-ONs in a 19" rack and only occupies two rack spaces.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Free Shipping Available

Our Price:$134.02List Price: $179.28You save 25%!

Single RACK-UP Mounting Bay Utility ChassisRadio Design Labs UC-1 Single RACK-UP Mounting Bay Utility Chassis

Radio Design Labs' UC-1 is an ULTRASTYLE design tabletop chassis for mounting RDL modules and accessories. The front panel features a single RACK-UP mounting bay. The rear panel has an identical mounting bay and is supplied with matching ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$84.01List Price: $112.37You save 25%!

Mounting Frame for Stick/TXRadio Design Labs SR-4 Mounting Frame for Stick/TX

Radio Design Labs' SR-4 is a universal module chassis that can mount to a backboard, wall or nearly any other support. It provides mounting for 4 STICK-ON power amplifiers or 7 standard STICK-ON modules. TX ™ modules may also be mounted. ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$83.21List Price: $111.30You save 25%!

STICK-ON Series 19"W Mounting Rack for up to12 ModulesRadio Design Labs SR-12A STICK-ON Series 19"W Mounting Rack for up to12 Modules

Radio Design Labs' SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$64.12List Price: $85.76You save 25%!

Mounting Strip for STICK-ON UnitsRadio Design Labs Smk 12 Mounting Strip for STICK-ON Units

The SMK-12 allows removable surface (up to 6 units) or edge (typically 12, max. 16) mounting of STICK-ON units. They can be fastened to its surface using screws or adhesive foam pads.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$27.45List Price: $36.72You save 25%!

Detachable Terminal BlockRadio Design Labs Dtb Rdl Detachable Terminal Block

Use DTB's to quickly detach and reattach wiring harness to STICK-ON units.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$6.77List Price: $8.00You save 15%!

Add to Cart

We're sorry, only of this item available



Call a Sales Pro at 800-356-5844 for more information

© 2016 Full Compass Systems, LTD  9770 Silicon Prairie Parkway, Madison, WI 53593  All rights reserved.

We are not responsible for typographical errors in pricing or product specification
inaccuracies in our catalog or web site. Prices are subject to change without notice.