Precision Audio and AV Interface Products

Radio Design Labs

ST-SH2 Stereo Headphone Amplifier - STICK-ON Series

  • Stereophonic Headphone Amplifier
  • Provision for External Stereo Level Control
  • Balanced or Unbalanced Input
  • Bridge a Line and Feed Headsets
  • Amplifier To Drive High or Low Impedance Headsets
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The ST-SH2 is used in applications requiring headphones of any impedance to be driven from consumer or professional audio sources. For fixed level installations not requiring user volume control, the ST-SH2 is wired to the audio source and to a headphone jack. Frequently, it is desirable to mount a volume knob by the headphone jack. The LEVEL ADJUST terminals (L) and (R) may be wired to the respective wipers of a stereo 10 kΩ potentiometer to provide volume adjustment. It is recommended that the ST-SH2 be located less than 39 in. (1 m) from the jack and volume control.

The exceptional low noise (better than 100 dB below operating level), low distortion, audio clarity and excellent crosstalk performance makes this module ideally suited to a wide variety of demanding audio applications. Use this module in conjunction with other RDL® modules as part of a high quality, flexible audio/ video system.

Applications

Inputs (2):
10 kΩ balanced or unbalanced, bridging
Input Signal:
-20 dBu (-22 dBV) to +6 dBu (for normal output level: +4 dBu, 100 Ω)
-10 dBu to +16 dBu (for 250 mW, 8 Ω output)
Output Load Impedance:
8 Ω to 5 kΩ (drives low or high impedance headphones)
Output Signal (normal rated):
+4 dBu into 100 Ω
Output Signal (maximum):
250 mW into 8 Ω, 20 Vp-p into 2 kΩ
THD+N:
< 0.005% (0.0015% typical @ 1 kHz)
Frequency Response:
20 Hz to 40 kHz (± 0.25 dB)
Noise:
< -100 dB below normal operating level
Dynamic Range:
> 115 dB
Gain:
Adjustable from -2 to 24 dB
CMRR:
> 50 dB at 100 Hz
Crosstalk:
< -65 dB (10 Hz to 20 kHz);
< -80 dB @ 1 kHz
Ambient Operating Environment:
0° C to 55° C
Power Requirement:
GROUND-REFERENCED, 24 Vdc @ 200 mA
Package Type:
Cardboard Box
Package Dimensions:
2 x 2 x 4 in.
Shipping Weight:
0.205 lbs.
WEEE weight:
0.15 lbs.
Tariff code:
8543.70.9860

Documents:
Format
PDF
CAD Files:
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High Res Images:
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Declaration of Conformity:
Format
PDF
A&E Specifications:
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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-SH2 ST-SH2