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Radio Design Labs ST-PA2
2-Watt Utility Power Amplifier

OUR PART #  STPA2

Our Price: $70.78
List Price: $94.67
You save 25%! (Low Price Guarantee)
Usually ships in 7-14 business days.
Need it sooner? Call us!

Recommended Accessories

Radio Design Labs' ST-PA2 is a utility power amplifier in the convenient line of STICK-ON products from Radio Design Labs. The durable bottom adhesive permits quick, permanent mounting nearly anywhere, or use it with RDL's racking accessories. The ST-PA2 gives you the advantages of a utility amplifier with the added convenience of STICK-ONs!

The ST-PA2 represents the second-generation in RDLs breakthrough in the traditional power vs. size ratio. Present technology permits features and performance at the most economical cost ever. The ST-PA2 offers 2 Watts of power...twice the power of most utility amplifiers...for a price you would expect to pay for 1 Watt.

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.

The ST-PA2 features a single, unbalanced audio input...a gain control...and two outputs. The first output is designed to deliver a clean 2 Watts RMS into an 8 ohm speaker. The second output is intended to drive 600 ohm transformers, typically on equipment inputs. This makes the ST-PA2 uniquely suited for applications such as music-on-hold inputs on telephone systems which may have either 8 ohm or 600 ohm inputs. If desired, both outputs may be used at the same time.

The convenience and low cost of the ST-PA2 make it the ultimate choice as a building block in many systems...from simple to complex. It may be used in combination with other STICK-ONs to form custom intercoms or talk-back systems...or can be used by itself to drive a single speaker with music or voice. For both straightforward or creative applications requiring a utility power amplifier, the ST-PA2 is the optimum choice!

NOTE: The ST-PA2 is not intended to drive long 600 ohm audio lines or multiple equipment inputs. For these applications, see STA-1 (stereo) STA-1M (mono), or ST-DA3 (distributed). If balanced audio input is required, see ST-PA6 audio power amplifier.

Rackmount System for 12 Stick-On Units
Radio 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.
In Stock
136.70 182.87 25
In Stock
Free Shipping Available
Stick-On Mounting Rack for 10 Units
Radio 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 ...
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65.41 87.48 25
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Free Shipping Available
24 VDC 500mA Switching Power Supply
Radio 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 ...
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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
19.40 22.89 15
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Rackmount Kit for 10 Stick-On Units
Radio 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!
162.53 217.40 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Free Shipping Available
Single RACK-UP Mounting Bay Utility Chassis
Radio 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!
85.69 114.62 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Frame for Stick/TX
Radio 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!
84.88 113.53 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
STICK-ON Series 19"W Mounting Rack for up to12 Modules
Radio 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!
65.41 87.48 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Strip for STICK-ON Units
Radio 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!
28.01 37.45 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Kit to Mount ST, TX Series Modules on FP Panel
Radio 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.
Usually ships in 7-14 business days.
Need it sooner? Call us!
5.11 6.83 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Kit for STICK-ON, TX, or Rack-Up module
Radio 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.
Usually ships in 7-14 business days.
Need it sooner? Call us!
3.46 4.08 15
Usually ships in 7-14 business days.
Need it sooner? Call us!

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Radio Design Labs ST-PA2
2-Watt Utility Power Amplifier

OUR PART #  STPA2

Product Videos:

Product Information:

Radio Design Labs' ST-PA2 is a utility power amplifier in the convenient line of STICK-ON products from Radio Design Labs. The durable bottom adhesive permits quick, permanent mounting nearly anywhere, or use it with RDL's racking accessories. The ST-PA2 gives you the advantages of a utility amplifier with the added convenience of STICK-ONs!

The ST-PA2 represents the second-generation in RDLs breakthrough in the traditional power vs. size ratio. Present technology permits features and performance at the most economical cost ever. The ST-PA2 offers 2 Watts of power...twice the power of most utility amplifiers...for a price you would expect to pay for 1 Watt.

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.

The ST-PA2 features a single, unbalanced audio input...a gain control...and two outputs. The first output is designed to deliver a clean 2 Watts RMS into an 8 ohm speaker. The second output is intended to drive 600 ohm transformers, typically on equipment inputs. This makes the ST-PA2 uniquely suited for applications such as music-on-hold inputs on telephone systems which may have either 8 ohm or 600 ohm inputs. If desired, both outputs may be used at the same time.

The convenience and low cost of the ST-PA2 make it the ultimate choice as a building block in many systems...from simple to complex. It may be used in combination with other STICK-ONs to form custom intercoms or talk-back systems...or can be used by itself to drive a single speaker with music or voice. For both straightforward or creative applications requiring a utility power amplifier, the ST-PA2 is the optimum choice!

NOTE: The ST-PA2 is not intended to drive long 600 ohm audio lines or multiple equipment inputs. For these applications, see STA-1 (stereo) STA-1M (mono), or ST-DA3 (distributed). If balanced audio input is required, see ST-PA6 audio power amplifier.

Rackmount System for 12 Stick-On Units
Radio 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.
In Stock
136.70 182.87 25
In Stock
Free Shipping Available
Stick-On Mounting Rack for 10 Units
Radio 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
65.41 87.48 25
In Stock
Free Shipping Available
24 VDC 500mA Switching Power Supply
Radio 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
23.40 31.28 25
In Stock
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
19.40 22.89 15
In Stock
Rackmount Kit for 10 Stick-On Units
Radio 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!
162.53 217.40 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Free Shipping Available
Single RACK-UP Mounting Bay Utility Chassis
Radio 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!
85.69 114.62 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Frame for Stick/TX
Radio 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!
84.88 113.53 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
STICK-ON Series 19"W Mounting Rack for up to12 Modules
Radio 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!
65.41 87.48 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Strip for STICK-ON Units
Radio 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!
28.01 37.45 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Kit to Mount ST, TX Series Modules on FP Panel
Radio 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.
Usually ships in 7-14 business days.
Need it sooner? Call us!
5.11 6.83 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Kit for STICK-ON, TX, or Rack-Up module
Radio 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.
Usually ships in 7-14 business days.
Need it sooner? Call us!
3.46 4.08 15
Usually ships in 7-14 business days.
Need it sooner? Call us!

Click to download

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