Tubbutec UniPulse Midi Kit for Roland TR-808

New in Box. For Roland TR-808.

Main features

• Highly customizable, compatible to almost any drum machine.
  A list of compatible machines is below.
• 16 pulse outputs
• Full velocity sensitivity
• 5 different pulse shapes
• Outputs positive and/or negative pulses up to 15V/-15V
• Voltage and length can be mapped to velocity, controller or CV-input
• 7 Digital outputs for gates and clocks
• Up to 24 simultaneous clock outputs with different midi dividers
• Analog output with various functions
• Potentiometer / CV input to control length or voltage of pulses
• Internal clock multiplier for DIN sync
• Easy to use configuration app with preset database for common drum machines
• Very small, fits in most drum machines
• Various midi socket configurations
• Runs off a single supply voltage between +7 and +25V, generates negative voltage internally

Some features in more detail:

PULSE SHAPES

Various pulse shapes can be selected for each output: Rectangular, Triangular, Decay, Gaussian and Open Rect. The latter is similar to the rectangular pulse, with the exception, that instead of returning to zero volts, it goes into a high impedance state. This allows it to make use of the characteristics of an existing pulse shaping network, such as an RC network built into the drum machine.

The pulse shapes have different sonic characteristics, experimenting which suits best is recommended. The Gaussian pulse for example contains less higher harmonics and can be used to simulate drums hit by a felt headed mallet.

CLOCK AND SYNC GATES

The analogue output and the four digital outputs can be configured to act as sync clocks and gates. This allows it to sync the drum machine to the midi clock. Clock dividers and polarity are adjustable in order to achieve compatibility with all drum machines. Clocks speeds between 48PPQN (din-sync 48) and 1PPQN (one pulse per quarter note) are possible.

By using the 16 pulse outputs, the uniPulse can output up to 21 different clocks simultaneously.