This listing is for a used Toa U-21S unbalanced line input module featuring integrated remote volume control functionality. As a pre-owned unit, it is being sold in its current condition. This module is typically integrated into professional audio systems or custom installations to manage audio signal levels from unbalanced sources. It is a suitable component for audio technicians, system integrators, or individuals maintaining or building Toa-based sound systems. The included remote control capability allows for convenient level adjustment from a separate location. Free shipping is available for this item. Please review the complete listing for any additional specifics regarding its operational state or compatibility before purchasing. Toa U-21S Unbalanced Line Input with Remote Volume Control module. Condition: Used. Listed at 25.00 USD. Toa Electronics. Performance Input: 220 k ub. Input Sensitivity: -18 ~ +12 dBu. Maximum Input: +18 dB.