RDL STP-1 2-Channel Universal Audio Attenuator

Solve inconsistent audio levels quickly with the Radio Design Labs STP-1 2-Channel Universal Audio Attenuator. Designed for pro audio, security and surveillance monitoring environments, the STP-1 lets you trim signal levels precisely where attenuation is required—eliminating the time and cost of building fixed pads. Each pack includes two independent channels with multi-turn trimmers for fine adjustment, and the unit supports high- or low-impedance, balanced or unbalanced circuits for maximum flexibility. Ideal for installers working with mixers, CCTV audio feeds, intercoms, and recording gear, the STP-1 increases input headroom and prevents overloads while keeping the audio path clean. The durable, US-made housing includes a printed wiring legend for fast, error-free setup and a three-year limited warranty for peace of mind. Whether you’re integrating audio into a surveillance system or optimizing a control room mix, the STP-1 delivers reliable, easy-to-adjust attenuation right where you need it. Add the STP-1 to your toolkit to streamline installs and maintain professional audio levels—order now or contact us for application guidance.

• Precise, on-site level control with multi-turn trimmers for accurate attenuation without jumpers or external resistors
• Two independent channels allow tailored adjustment for stereo or dual-source audio paths
• Flexible operation in high or low impedance, balanced or unbalanced circuits for broad system compatibility
• Compact modules mount at the point-of-need to save installation time and reduce rack clutter
• Improves input headroom and protects downstream equipment from overload in mixers, recorders, and surveillance systems
• Clear wiring legend and US-made construction simplify install and support long-term reliability