Preamplifiers
Radio Design Labs
STA-2A Dual High Gain Line Amplifiers
Dual-channel, line-level audio preamplifier Convert between balanced and unbalanced Convert between high and low impedance High gain, high output, high performance
$228.94
Radio Design Labs
STA-1 Electronic Transformer Pair
Dual-channel line-level preamplifier Convert from high to low impedance Match audio levels Bridge an audio feed line
$218.09
Radio Design Labs
ST-GCA3 Audio Gain Control Amplifier
Constantly adjusts for changes in input levels Ideal for leveling music sources Great for paging systems, intercom systems, mic mixing applications, etc. Low-noise & low-distortion AGC Tight dynamic control
$186.11
Radio Design Labs
ST-ACR1 Audio Controlled Relay
Quick, convenient install Reliable Switch online level sources Silence sensing Two multiturn trimmers included
$146.04