RDL STA1 Data Sheet

STICK-ON® SERIES

Model STA-1
Electronic Transformer /
Line Amplifier Pair

ANYWHERE YOU NEED...

• Up to 20 dB Gain In an Audio Line

•

Conversion from Balanced to Unbalanced

•

Conversion from Unbalanced to Balanced

• Conversion from High to Low Impedance

• Conversion from Low to High Impedance

• To Bridge an Audio Line Feed

• To Precisely Match Audio Levels

You Need The STA-1!

APPLICATION: The STA-1 is part of a group of products in the STICK-ON series, designed by Radio
Design Labs, the STA-1 contains two identical circuits. Each is both an electronic line transformer, and an
amplifier. The durable adhesives provided with the STA-1 permit permanent or removable mounting. The
STA-1 can be treated just like a pair of audio transformers with gain making it ideal for most any audio line
application requiring amplification and/or conversion between balanced or unbalanced operation! Some
features of the STA-1 are:

• No capacitors or transformers in the audio circuits

• Two identical amplifier circuits in each STA-1

• True DC amplifiers provide impeccable audio quality

• Ultra-low distortion

• Ultra-low noise

• 18 dB of headroom at operating level

• Output level adjustable from off to 20 dB gain

• Provides -10 dBV unbalanced to +4 dBu balanced conversion

• Multi-turn trimmers for precise level adjustment

• Recessed adjustments discourage tampering

• All inputs and outputs are RF bypassed

• Full operation in either high or low impedance circuits

• Operation unaffected by unbalancing of inputs or outputs

• Outputs short-circuit protected

• Very high common-mode rejection when bridging balanced lines

• Positive connections via barrier block. No audio connectors to wire

RDL •• P.O. Box 1286 •• Carpinteria, CA., USA 93014 •• [phone] •• FAX [phone] •• http://www.rdlnet.com

STICK-ON® SERIES

Model STA-1
Electronic Transformer /
Line Amplifier Pair

Installation/Operation

EN55103-1 E1-E5; EN55103-2 E1-E4

Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.

TYPICAL PERFORMANCE

Amps per STA-1: 2 identical circuits (stereo or dual mono operation)
Gain: 20 dB adjustable (separate controls for each channel)
Input impedance: 10 kΩ bridging
Input configuration Balanced or unbalanced
Output impedance: 200Ω balanced, drives 600Ω or 10kΩ lines
Output configuration Balanced or unbalanced
Frequency Response: DC to 25 kHz +/- 0.25 dB
Total Harmonic Distortion: 0.003% to 0.009%; 0.005% nominal
Output Level: +4 dBu
Headroom: 18 dB (at rated output level of +4 dBu)
Noise: -80 to -85 dB referred to +4 dBu
CMRR: -70 to -80 dB at 100 Hz
Crosstalk: Better than 75 dB
Power Requirement: 24 to 33 Vdc @ 50 mA, Floating

891-0003H

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Radio Design Labs Technical Support Centers

U.S.A. [phone], [phone]; Fax: [phone]