500-series format

api 500 HTTP status200payload500. API 500 Series · API 550A 500 Series 3-band Equalizer · API 550b 500 Series 4-band Equalizer · API 500-6B 6-slot 500 Series Lunchbox · API 500V 10

api33, 500 series micinstrument preamp based on the 512c with added variable output level control and 3:1 output transformer tap selection..