API 550b - 500 Series Discrete 4 Band EQ Black Lion The world’s first 32-channel AD/DA

The world’s first 32-channel AD/DA converter just got a lot better

THD + NOISE

Bass Power

80Hz switchable HPF

5mm ( 15”x 8 ½”x 7- ¾ ” )

API 550b - 500 Series Discrete 4 Band EQ Black Lion The world’s first 32-channel AD/DABased on API's original 550 from the late '60s, the API 550b is a continuation of the EQ that played a major role in the history of music recording, but with an additional filter band and several new frequencies. Incorporating API's exclusive circuitry and proprietary components (such as the legendary API 2520 Op Amp), the 550b artfully blends the past with the present. So many hit records still depend on the unique 550 sound that engineers around the