Radio Design Labs ST-DA3
1x3 Line Level Distribution Amplifier

OUR PART #  STDA3

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The RDL ST-DA3 gives you the advantages of an audio distribution amplifier PLUS you can put it where you need it. The ST-DA3 allows bridging of any audio line, adjusting the gain, and driving either high or low impedance, balanced or unbalanced loads. The ST-DA3's wideband circuitry produces the unsurpassed pure clarity, ultra-low distortion and low noise for which RDL products are known.

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.

Radio Design Labs ST-DA3 Features:

  • Functions as an electronic transformer
  • Provides isolation, gain, and three outputs
  • Wideband amplifiers produce impeccable audio
  • Operates from ground-referenced, floating or bipolar power supply
  • Ultra-low distortion
  • Ultra-low noise
  • Excellent phase response
  • Gain adjustment 17 dB above or below unity
  • Ample headroom at operating level
  • Recessed multi-turn audio taper gain trimmer for precise control
  • Input and outputs are RF protected
  • Full operation in either high or low impedance circuits
  • Outputs are short circuit protected
  • Positive connections via barrier block

Radio Design Labs ST-DA3 Specifications:

  • Input: 20 kohm balanced or unbalanced
  • Input Signal: -15 dBV to +21 dBu (for +4 dBu output)
  • Maximum Input Level: +24 dBu
  • Outputs (3): 150 ohm balanced or 75 ohm unbalanced
  • Output Signal:
        * Balanced: +4 dBu nominalbalanced
        * Unbalanced: 6 dB below balanced line level
  • Maximum Output Level: +25 dBu
  • Frequency Response: 10 Hz to 100 kHz (+/- 0.05 dB)
  • THD+N:< 0.002% (unity gain)
  • IMD:< 0.003% (unity gain)
  • Noise below +4 dBu:< -98 dB (unity gain)
  • Headroom:> 20 dB (above +4 dBu)
  • Gain: Unity +/- 17 dB (adjustable)
  • CMRR:> 60 dB (50 Hz to 120 Hz)
  • Power Requirement: Ground-Referenced or Floating 24 to 33 Vdc @ 70 mA
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.
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 ...
24 VDC 500mA Switching Power Supply, North American Model
Radio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply, North American Model
Radio Design Labs' PS-24AS is a 24 VDC/500 mA switching power supply with a North American AC plug. Compatible with various RDL products.Radio Design Labs PS-24AS Specifications: Input: 100 to 240 VAC Output: 24 Vdc, 500 mA (UL, ...
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 ...
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.
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!
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!
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!
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!
Mounting Bracket for STICK-ON Modules
Radio Design Labs ST-RRB1 Mounting Bracket for STICK-ON Modules
Radio Design Labs' ST-RRB1 mounting kit contains a bracket to attach a STICK-ON module to a rear rack rail or to any flat surface. The module slides into the holder and snaps into position. The module may easily be removed.
Usually ships in 7-14 business days.
Need it sooner? Call us!
Detachable Terminal Block
Radio 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!

Click to download

Radio Design Labs ST-DA3
1x3 Line Level Distribution Amplifier

OUR PART #  STDA3

Product Information:

The RDL ST-DA3 gives you the advantages of an audio distribution amplifier PLUS you can put it where you need it. The ST-DA3 allows bridging of any audio line, adjusting the gain, and driving either high or low impedance, balanced or unbalanced loads. The ST-DA3's wideband circuitry produces the unsurpassed pure clarity, ultra-low distortion and low noise for which RDL products are known.

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.

Radio Design Labs ST-DA3 Features:

  • Functions as an electronic transformer
  • Provides isolation, gain, and three outputs
  • Wideband amplifiers produce impeccable audio
  • Operates from ground-referenced, floating or bipolar power supply
  • Ultra-low distortion
  • Ultra-low noise
  • Excellent phase response
  • Gain adjustment 17 dB above or below unity
  • Ample headroom at operating level
  • Recessed multi-turn audio taper gain trimmer for precise control
  • Input and outputs are RF protected
  • Full operation in either high or low impedance circuits
  • Outputs are short circuit protected
  • Positive connections via barrier block

Radio Design Labs ST-DA3 Specifications:

  • Input: 20 kohm balanced or unbalanced
  • Input Signal: -15 dBV to +21 dBu (for +4 dBu output)
  • Maximum Input Level: +24 dBu
  • Outputs (3): 150 ohm balanced or 75 ohm unbalanced
  • Output Signal:
        * Balanced: +4 dBu nominalbalanced
        * Unbalanced: 6 dB below balanced line level
  • Maximum Output Level: +25 dBu
  • Frequency Response: 10 Hz to 100 kHz (+/- 0.05 dB)
  • THD+N:< 0.002% (unity gain)
  • IMD:< 0.003% (unity gain)
  • Noise below +4 dBu:< -98 dB (unity gain)
  • Headroom:> 20 dB (above +4 dBu)
  • Gain: Unity +/- 17 dB (adjustable)
  • CMRR:> 60 dB (50 Hz to 120 Hz)
  • Power Requirement: Ground-Referenced or Floating 24 to 33 Vdc @ 70 mA
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.
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 ...
24 VDC 500mA Switching Power Supply, North American Model
Radio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply, North American Model
Radio Design Labs' PS-24AS is a 24 VDC/500 mA switching power supply with a North American AC plug. Compatible with various RDL products.Radio Design Labs PS-24AS Specifications: Input: 100 to 240 VAC Output: 24 Vdc, 500 mA (UL, ...
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 ...
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.
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!
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!
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!
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!
Mounting Bracket for STICK-ON Modules
Radio Design Labs ST-RRB1 Mounting Bracket for STICK-ON Modules
Radio Design Labs' ST-RRB1 mounting kit contains a bracket to attach a STICK-ON module to a rear rack rail or to any flat surface. The module slides into the holder and snaps into position. The module may easily be removed.
Usually ships in 7-14 business days.
Need it sooner? Call us!
Detachable Terminal Block
Radio 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!

Click to download

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