Bucket brigade delays (BBD's) don't count because they are discrete time analog: the amplitude is represented by capacitor charge, not by 1's and 0's. Digital means discrete time and discrete amplitude.
ADA MP-1 (which, incidentallly, has a BBD as the basis for its chorus) is not a digital signal processor at all. All signal processing is analog. The processor just stores and establishes gain/volume and signal routing settings for various circuits.
The MP-1 can be summarized as:
* Discrete FET input stage followed by a programable attenuation feeding an op-amp buffer with soft diode clipping driving either a tube channel or SS channel
* a four-triode (2 x 12AX87/ECC83) tube board with two FET-switched voicings and a programmable attenuation between the second and third stages.
* solid state channel with NE572 compression chip
* a master volume section shared by both channels feeding into a four-band EQ based around a quad op-amp
* a chorus based on an MN3007 bucket brigade chip, with a NE570 compander around it for noise reduction ("stereo" achieved by inverting the chorused signal into the other channel).
* switchable effects loop after EQ, before chorus.
* all glued together with op-amp buffering running on -15/+15 rails.
ADA MP-1 (which, incidentallly, has a BBD as the basis for its chorus) is not a digital signal processor at all. All signal processing is analog. The processor just stores and establishes gain/volume and signal routing settings for various circuits.
The MP-1 can be summarized as:
* Discrete FET input stage followed by a programable attenuation feeding an op-amp buffer with soft diode clipping driving either a tube channel or SS channel
* a four-triode (2 x 12AX87/ECC83) tube board with two FET-switched voicings and a programmable attenuation between the second and third stages.
* solid state channel with NE572 compression chip
* a master volume section shared by both channels feeding into a four-band EQ based around a quad op-amp
* a chorus based on an MN3007 bucket brigade chip, with a NE570 compander around it for noise reduction ("stereo" achieved by inverting the chorused signal into the other channel).
* switchable effects loop after EQ, before chorus.
* all glued together with op-amp buffering running on -15/+15 rails.