Precision Audio and AV Interface Products

Radio Design Labs

ST-DA3 Line Level Distribution Amplifier - 1x3

  • Audio Distribution with up to 3 Outputs
  • Balanced or Unbalanced Input and Outputs
  • Bridge an Audio Line for Local Distribution
  • Distribution with Impedance Conversion
  • Distribution with Gain or Loss
  • Inputs and Outputs RF-Protected
  • 1x3 Mono or Use Two Units for Stereo
  • RDL® SupplyFlex™ Power Input Configuration
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The 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 up to three high or low impedance, balanced or unbalanced loads. The ST-DA3's wideband circuitry produces the unsurpassed pure clarity, low-distortion and low-noise for which RDL products are known.

The ST-DA3 features RDL's SupplyFlex power input configuration. The module will operate directly from floating 24 Vdc or bipolar dc power. If a jumper is connected between the PWR minus terminal and any module ground, the module power becomes ground-referenced.

Videos

Applications

Input:
20 kΩ balanced or unbalanced
Input Signal:
-15 dBV to +21 dBu (for +4 dBu output)
Maximum Input Level:
+24 dBu
Outputs (3):
150 Ω balanced or 75 Ω unbalanced

Output Signal:
Balanced:
+4 dBu nominal balanced;
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 Vdc @ 70 mA
Package Type:
Cardboard Box
Package Dimensions:
2 x 2 x 4 in.
Shipping Weight:
0.2 lbs.
WEEE weight:
0.145 lbs.
Tariff code:
8543.70.9860

Documents:
Format
PDF
CAD Files:
Format
High Res Images:
Format
Declaration of Conformity:
Format
PDF
A&E Specifications:
Format

Direct Dealer Program


Becoming an RDL direct dealer is quick and easy. To become a direct dealer, your company must meet the following requirements:

  • Must be an A/V contractor, sound contractor or system integrator

  • Must possess a current resale certificate for your state

Click here to submit a new direct dealer account inquiry.


Buy Online

STICK-ON SERIES

STICK-ONs are the original application-specific modules for the A/V, recording and broadcast industries. Module functions include signal detection, switching, pre-amplification, format conversion, line driving, power amplification, mixing, distribution, gain control, equalization, routing and more. Each STICK-ON is an ultra-compact module engineered to provide higher performance and longer life than other industry products. STICK-ON modules are solid encapsulated hybrid circuits in durable industrial black plastic enclosures (1.55", 3.94 cm x 3", 7.62 cm x 0.65", 1.65 cm) with clear bold white lettering for the terminal block connections, recessed trimming controls and switches.

Since RDL first originated application-specific modules, STICK-ONs have led the industry in economical, high-performance and cost-effective long life solutions in system designs. Multiple STICK-ON modules can be interconnected to form all or part of an A/V system. A single STICK-ON module may be mounted right where its function is needed, often to add an input, output, or gain adjustment to existing equipment. STICK-ON modules allow customizing an A/V system to precisely match users’ needs. Adding STICK-ONs to an existing system can extend system life by adding updated features, resulting in considerable cost savings. A complete range of backboard and rack mounting options is available for systems comprised of multiple STICK-ON modules.

The technology used in STICK-ON modules has been regularly updated over the years to insure industry-leading performance. Functions and features provided by STICK-ONs, since their introduction, are still available today. This continuity in product offering and support makes STICK-ON modules the preferred long-term resource for system design solutions. STICK-ON SERIES modules are designed and manufactured in the U.S.A.

ST-DA3 ST-DA3