Key benefits - Simple 6-12V DC power operation with IC BA6138 for convenient use in a wide range of setups. - Uses a professional audio VU driver IC (not TA7318) with square-root dynamic compression and logarithmic output characteristics to stabilize small signals and manage larger signals effectively. - Built-in mute function to prevent pops at power-on and ensure a clean startup with a small startup swing. - Durable construction with a double-sided circuit board and robust crimp terminal wiring to maintain secure contact surfaces after multiple connections. Core features - Power supply and control - Circuits operate from 6-12V DC power. - IC BA6138 integrated for reliable operation. - Audio performance and signal handling - Employs a professional audio VU driver IC (distinct from TA7318 previously used). - Includes a square-root dynamic compression circuit. - Features logarithmic output characteristics to control signal behavior and prevent small-signal drift. - Startup and protection - Mute function implemented to avoid startup pops. - Mute input is driven low at power-on to ensure a clean switch-on, with a small startup swing to match boot behavior. - Mechanical and connection reliability - Double-sided circuit board used to reinforce crimp terminals. - Designed to prevent loosening of connector contact surfaces after multiple wiring cycles. Applications and use scenarios - Small audio meters or VU indicators powered by 6-12V DC in consumer electronics, audio racks, or DIY projects. - Compact audio amplifiers or mixer modules that require stable dynamic range and a pop-free power-up. - Hobbyist or professional projects needing a robust connection interface with reliable crimp terminal strength and durable PCB construction. Technical notes - Brand and model specifics retained: BA6138 used as the primary IC, with a professional audio VU driver IC and explicit reference that TA7318 was used previously. - Functionality described includes power operation, compression and output characteristics, mute on power-up, and reinforced PCB construction for long-term reliability.