Dual EQ with classic 550B design and peak/shelf switch on Hi & Lo bands and To commemorate API's 55th year in the audio industry, API announces the release of the 5500 Anniversary Edition. Based on... View more
Dual EQ with classic 550B design and peak/shelf switch on Hi & Lo bands and The beginnings of the 5500 circuit can be traced back to the original 550 equalizer designed by Saul Walker, the founder of... View more