Features: The Mini Fully Balanced Passive Preamp is the ideal solution for audiophiles precise Volumes control for their active monitors speakers without altering sound quality. This pre amplifier with a convenient selection Switcher, ensuring compatibility with various sound setups. Suitable for professional sound enthusiasts and musicians who use active monitors speakers, this device provides integration into sound systems. Perfectly suited for near field environment such as home studios or desktop setups, its aluminum finish complements any modern sound equipment. Experience the purest sound from your speakers with this preamp's passive design, which maintains timbre and quality, eliminating the hassle of choosing between different pre amplifiers. Specifications: Component:Aluminium Frequency: 20Hz-20KHz. Impedance: 10KΩ Sizr:Approx.145x65mm/5.7x2.56inch Package Includes: 1Pc Passive Preamplifier note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.