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LED level meter driver, 12–point, power scale, dot or bar display
Amazon.com: VU Level Meter Driver Board Module Kit, PCB DC 9‑12V VU Meter Driver Board Logarithmic Output Characteristics for Sound System : Electronics
BA6820F Datasheet(PDF) - Rohm
Sound level meter circuit using IC LM3914 - Gadgetronicx
Audio level meter using UAA180 LED driver
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5 Led Vu Meter Driver Module Audio Level Indicator / Power Meter Board Level Indicating 5-12v Dc - Electronics Production Machinery - AliExpress
LA2284L-G09-T 5-dot Dual LED Level Meter Driver | Profusion
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LED Audio Level VU Meter Using Transistors
LED Audio VU Meter
vu meter circuit Page 3 : Meter Counter Circuits :: Next.gr
BL6124 5-bit LED level meter driver IC basic application circuit - Basic_Circuit - Circuit Diagram - SeekIC.com
5PCS BA6822S LED level meter driver, 12-point x 2 channel DIP | eBay
Ghxamp 45mm Vu Meter With Led Backlight+ Driver Board +cable For Amplifier Audio Level Meter Preamplifier 1sets - Speaker Accessories - AliExpress