The mk4 builds on the previous mk3 and adds these new features:
a dot matrix display, making menu navigation, parameter selection etc. a breeze.
a front panel accessible MicroSD card slot.
compatibility with the Macro Machines Storage Strip.
an internal precision clock allowing new algorithms such as a tuner, and pitch and frequency references.
The new version is largely software-compatible with the mk3, and the intention is to continue releasing new features for both the mk3 and mk4 in parallel.
X & Y inputs, A & B outputs:
ADC: 24 bit, THD+N -93dB, Dynamic range 99dB, SNR 99dB
DAC: 24 bit, THD+N -94dB, Dynamic range 105dB, SNR 104dB
Sample rate: 75kHz
Z input sample rate: 75kHz
CPU: Microchip PIC32MX at up to 50MHz, hackable, open source code framework available.
There are currently 84 distinct algorithms organised in several banks.
The first 16 are the 'classic disting' ones.
Precision Adder with integer voltage offsets
Four Quadrant Multiplier with integer multiply/divide
Quantizer with selectable scales
Comparator with adjustable hysteresis
Dual Waveshaper wavefolder and triangle-to-sine shaper
Sample and Hold with noise source and adjustable slew rate
Slew Rate Limiter with linear and exponential slew
Pitch and Envelope Tracker
LFO with through zero frequency control and waveshaping
Clockable LFO with multiply/divide and waveshaping
VCO with linear FM sine and saw outputs
VCO with waveshaping saw/triangle and pulse outputs
The remaining algorithms are:
Precision Adder with fractional voltage offsets
Voltage Controlled Delay Line vibrato/chorus/flange effects
Clockable Ping Pong Delay
Clockable Ping Pong Delay with input pan control
Resonator for drum synthesis
Vocoder 12 band
Phaser up to 10 stages
Tape Delay with voltage controlled tape speed
State Variable Filter smoothly variable filter type
AR Envelope (with push)
AR Envelope & VCA
AR Envelope & VCA (with push)
Dual AR Envelope
Dual AR Envelope (with push)
Euro to Buchla Converter
Buchla to Euro Converter
Clockable AD Envelope (with mute)
Clockable AD Envelope (with gate)
Clockable AD Envelope (with trigger)
Clockable AD Envelope & VCA
Shift Register Random CVs
Shift Register Random Quantized CVs
Shift Register Random Triggers
Shift Register Random Dual Triggers
Dual Sample and Hold
Dual Quantizer (Z scale)
Dual Euclidean Patterns
Dual Delayed Pulse Generator
The functions relating to playing back audio and MIDI files from the MicroSD card are:
Clocked Audio Playback
Audio Playback with V/Oct
Audio Playback with Z Speed
Audio Playback with Reverse
Dual Audio Playback
Dual Audio Playback with Z Speed
MIDI File Playback (Clocked)
MIDI File Playback (Free Running)
Audio Playback with End CV