MD900 is a polyphonic desktop synthesizer, multitimbral with 4 parts. A polyphony of up to 16 voices are shared by the 4 multi-timbral parts. All of these 4 parts have their own effect stack [Mod-Delay (flanger, chorus, vibrato), Reverb, Tube-AMP, EQ, LP-Filter, DYNAMIC (Limiter) , Stereo Delay ...].
The overall audio path is stereo. Rationally, the oscillator, mixer filter, amps and effects are all in stereo.
Four independent arpeggiator und step sequenzer assigned to each of the four synth parts. The trigger sequencer may trigger the built in transient sample player (Drum Kit .wav) or send triggers to MIDI-Out (USB-DIN or USB-MIDI)
The housing is made of aluminum with real walnut wood on the front and back.
All components are industrial grade. On the operator panel we use precision potentiometer with aluminum covered knobs.
For some parameter entries we use endless encoder without rest.
This kind of encoders feels like a potentiometer.
All of this feels very valuable and it feels great to work with.
The MD900 XVA engine is patch compatible with the M800-R2 synthesizer.
The heart of the voice are the two aliasing free oscillators (OSC1,OSC2).
This oscillators have two different modes
(Wavetable- or Algorithm-oscillator)
Each of them can run in 4 instances with detuning capabilities and spread in the
stereo channels in a different way.
The Noise is a sample based oscillator
which can be restarted with the Note-On, run free with fix pitch or follow the Note-On pitch. All oscillator outputs are stereo. These stereo outputs will feed in the mixer section. The output of the mixer has two paths which are the input for both stereo multimode filters (A/B). Both filter outputs feed the amps (A/B) and final these stereo outputs feed the effect stack.
The Mixer primary sum the OSC1,OSC2 Noise outputs. It can be decided which path (A/B) should be mixed to.
Cross fade between OSC1 & OSC2 are just on path A. The cross fade amount is a modulation target.
Both MULTIMODE FILTER emulate some classical analog filter types such as filters with 12dB or 24dB filter depth (LP,BP,HP,NS).
Some filter types start self-oscillating on high
resonance values. The actual cutoff frequency will be displayed by the cursor in real time. The graphical view displays the filter curve in context with the selected filter type, filter mode and their individual parameters.
The modulation matrix has 24 slots.On each slot a modulation Source and modulation
Destination can be defined. The amount
can be adjusted between 0-100% and the polarity can be reversed. 38 modulation destinations and 24 modulation sources are available.
The Drum-Instruments are organized in 14 different instruments. On each of them the sample is selectable (stereo/mono sample .wav). The pitch, panorama, level, start/end points & fade out time is adjustable.
This collection of Instruments with their own settings are storable in a drum kit with a certain name. The dependent instrument is able to be triggered with midi over channel 10. The note number is selectable on each individual instrument. This is stored in the Kit File as well.
Another way is to trigger the instruments with the build in drum grid (drum machine).