API 550b Discrete 4-Band Equalizer Hot Deals Twenty-two years later

Twenty-two years later

and switchable polarity

noise-proof all metal D-sub shells

the extraordinary headroom made possible with API's 2520 Op Amp offers the predictable and warm analog performance

API 550b Discrete 4-Band Equalizer Hot Deals Twenty-two years laterAPI 550b Discrete 4 Band EQ So many hit records still depend on the unique 550 sound that engineers around the world find it to be an invaluable tool. In fact, the 550b design has been taken from the original blue prints and spec control drawings from the API archives. It is unlike any other EQ you will ever use. Rather than offer a huge assortment of complex features, the API 550b provides exactly the right number of controls. Its four EQ bands are