RDL ST-GLA1 – Gated Line Amplifier and Noise Gate is backordered and will ship as soon as it is back in stock.
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What is the RDL ST-GLA1?
The RDL ST-GLA1 is a self-gated line-level amplifier that automatically switches a line signal on and off to suppress unwanted noise. It works alone as a noise gate or with other RDL modules to build automatic mixing systems.
How does it work?

The ST-GLA1 opens when the input signal exceeds an adjustable threshold, switching in 10 ms with a nominal 2-second off delay that can be extended with an external capacitor. Gain and threshold are adjustable, and two LED indicators assist setup. The input (500 Ω balanced or 5 kΩ unbalanced) and the +4 dBu, 150 Ω balanced output may be wired balanced or unbalanced. An open-collector slave output rated at 50 mA can trigger other equipment or RDL modules. The module requires ground-referenced 24 Vdc at 75 mA, such as from the RDL PS-24AX.
What are the key features?
- Self-gating noise reduction — The output switches off when no signal is present to suppress accumulated noise.
- Adjustable gain and threshold — Front controls set level and gating sensitivity.
- Fast, silent switching — The gate opens in 10 ms without clicks.
- Open-collector logic output — A slave output triggers other equipment when the gate opens.
- Balanced or unbalanced I/O — Input and output wire balanced or unbalanced.
At Creation Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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