Used Behringer CX2300 analog channel divider. In a way, you could call it vintage. From the late 1980s? At an incredibly low price, this was considered a masterpiece from the first generation of Behringer, and it was said that the sound would improve by using it. Compared to the later CX2310, the Low delay and 2-channel limit are also easier to use. Behringer's original op-amps (manufactured in Texas, perhaps?) are used extensively (lol), and the presence of transformers is also evident on the circuit board. The switches and volume controls have been maintained, so you should be able to use them with confidence for a while. However, the aging of the electronic components is unavoidable... Thank you for your understanding.