RapcoHorizon NSUM-1N1P 1' Concert Series 1/8" to 1/4" TS Summing Cable

Professional 3.5mm to 1/4 Inch Summing Cable for Clean Audio Conversion

The RapcoHorizon NSUM-1N1P Summing Cable is a compact, high-quality solution for merging stereo signals into a single, clear mono output. This one-foot cable allows you to connect devices such as laptops, smartphones, and tablets directly to mixers, powered speakers, or recording interfaces using a 1/4-inch input. Designed for precise signal summing and dependable audio transfer, this cable is a must-have for professionals who require consistent, noise-free sound.

Accurate Stereo to Mono Signal Summing

Engineered with a built-in resistor network, this summing cable combines left and right stereo channels evenly into one mono output while maintaining proper impedance. This ensures clear, phase-accurate audio without distortion or loss of signal strength. The NSUM-1N1P makes it simple to integrate consumer audio devices into professional systems, eliminating the need for adapters or complex routing equipment.

High-Quality Materials for Superior Signal Integrity

Constructed using RapcoHorizon’s premium MIC3.K cable, the NSUM-1N1P features dual 24-gauge conductors and an 80% braided copper shield. This heavy shielding minimizes unwanted hum, RF interference, and noise in any environment. The result is transparent, balanced sound transmission suitable for both stage and studio applications.

Durable Construction for Long-Term Reliability

The matte PVC jacket offers flexibility while providing excellent abrasion resistance and strain relief. The 3.5mm TRS and 1/4-inch TS Neutrik-style connectors are built for durability and performance, ensuring tight, secure connections that withstand repeated use. Every cable is hand-soldered for maximum reliability, delivering consistent audio quality through thousands of setups and breakdowns.

Compact Size for Versatile Applications

At just one foot in length, this summing cable is ideal for close-proximity connections, rack systems, and clean patching setups. Its short length reduces signal loss while maintaining flexibility for tight configurations. The NSUM-1N1P is perfect for DJs, AV techs, and engineers who need dependable summing capabilities in compact or portable systems.

Handcrafted Quality and Precision Testing

Each RapcoHorizon cable is hand-assembled and tested in the USA to ensure it meets the company’s strict quality standards. From the shielding to the solder joints, every element is inspected for performance consistency and reliability. This attention to detail makes RapcoHorizon a trusted choice among professionals in audio production, broadcasting, and live performance.

A Reliable Tool for Professional Sound Systems

Whether used in a recording studio, house of worship, or live venue, the RapcoHorizon NSUM-1N1P ensures accurate audio summing with stable, balanced output. Its robust design and pristine sound quality make it a practical and essential addition to any audio technician’s toolkit.