MCM Electronics

RDL Two-Watt Utility AmplifierMCM Part #: 555-ST-PA2  |  Radio Design Labs Part #: ST-PA2

RDL Two-Watt Utility Amplifier 4.5 stars from 1 review.
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Utility Power Amplifier

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 to 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.

Product Description

  • 2 Watts RMS into 8 ohm
  • +12 dBu into 600 ohm
  • Quality Utility Amplifier
  • Intercom Driver
  • Music-On-Hold Driver

Input: Unbalanced 10 Kohm
Input Level: -15 dBV minimum (for rated power output)
-20 dBV minimum (for 1 watt RMS into 8 ohm
Frequency Response: 35 Hz to 30 kHz (8 ohm ± 1.5 dB)
20 Hz to 30 kHz (600 ohm ± 0.5 dB)
THD+N: < 0.75%; 0.5% typical
Noise: < -80 dB (8 ohm @ 2 W RMS)
< -70 dB (600 ohm, referred to +4 dBu)
Outputs (2): 1 @ 8 ohm, 2 watts RMS maximum
1 @ 600 ohm, +12 dBu maximum
Ambient Operating Environment: 0° C to 40° C
Power Requirement: GROUND-REFERENCED, 24 VDC @ 250 mA
Package Dimensions: 2" x 2" x 4"
Shipping Weight: 0.18 lbs.

Product Reviews

  • "Very Happy!" by deltacom on 2/12/2010
    Overall: 4.5 out of 5

    This is the third time I have used this product in a Music-on-Hold application. Works great!

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Package Specifications & Dimensions
Weight:0.23 lbs.
Warranty:1095 days
Need to Return?
Length:4.25 in.
Width:2.25 in.
Height:2 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages

MCM Cat 57, Page 150

MCM Cat 56, Page 165

PDF Reference

Requires Adobe Acrobat Reader.

Mfr. Info

Radio Design Labs Logo
Mfr. Name:Radio Design Labs
Mfr. Part Number:ST-PA2
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