I made a stereo VU meter bridge for my studio recording setup. It's a pretty straightforward project, and most people with a bit of electronics experience can put one together easily. You can use these for any audio monitoring duties.
I put together a blog post with more details here: [ Ссылка ]
I adapted this from [ Ссылка ]
The main difference is instead of a TL071 chip, I use a 5532 buffer board and dismiss C1, R2 and R3, since they're already on the board.
The diodes can be 1N4148 since the driver will be strong enough to open them fully.
Take note of the position and grounding of R4, it's important that the meter needles be grounded at the same point.
Also, don't use a stereo pot for the inputs. Instead use 2 separate pots or a stereo resistive attenuator. It's best to stay within 20k-100k, but I used 500k and it's fine. It just makes it a bit more tweaky at the high end of the potentiometer rotation. Also, - I no longer see any AC/DC 5532 preamp boards on Amazon- they're only DC. So if you're looking for that exact one, check ebay. Or, just use a 12VDC power supply.
Some Amazon affiliate links:
5532 Preamp board(DC only): [ Ссылка ]
Adjustable power supply: [ Ссылка ]
A nice VU: [ Ссылка ]
Kit for under $20: [ Ссылка ]
