4 in 4 out 3.5mm Audio Switcher with Easy A/B Switching, Flexible Signal Routing, Durable Metal Housing

Compact 4in 4out 3.5mm Audio Signal Switcher This compact, lightweight audio switcher is designed for quick, reliable comparison and routing of multichannel headphone signals. Its durable aluminum shell and portable size make it suitable for field use, retail demos, and studio testing. Key benefits Easy A B testing and comparison: Switch between multiple players, sources, or headphones while using the same earphones to make direct comparisons without reconnecting cables. Flexible routing: Four 3.5mm input jacks and four 3.5mm output jacks. Any input jack can function as an output and any output jack can function as an input for flexible signal routing. Portable and robust: Small footprint and light weight for transport, with an aluminum housing for durability. Simple setup: US plug and included signal cable let you start testing right away. Main features Input and output: 4 x 3.5mm audio signal input interfaces and 4 x 3.5mm audio signal output interfaces. Inputs can be used as outputs and outputs can be used as inputs. Material: Aluminum shell for strength and heat dissipation. Color: Black Plug type: US plug Size: about 9.5 x 6.5 x 2.8 cm Net weight: about 296 g Length of signal line: about 3.5 mm Package includes: 1 audio signal switcher and 1 signal line Practical use scenarios Audiophile A B testing: Use the same earphones to alternate between multiple portable players or DACs and identify differences in sound character. Retail or showroom demonstrations: Quickly show customers how different headphones perform with the same source without swapping cables. Small studio comparison: Route multiple headphone feeds to a single monitoring set to evaluate mixes or check consistency across playback devices. Notes Item color of external packaging may differ slightly from pictures due to lighting and screen differences. Please allow 0.5 to 2 cm measurement differences due to manual measurement. This switcher provides a straightforward, durable solution for comparing and routing headphone audio signals in a compact package.