Behringer 1027 Clocked Sequential Control Module

The Behringer 1027 Clocked Sequential Control Module is an analog step sequencer designed for Eurorack modular synthesizer systems. Based on the classic 2500 Series modular architecture from the 1970s, this module provides musicians and sound designers with an eight-position step sequencer capable of generating multiple control voltages for evolving sequences, rhythms, and modulation patterns.

The module contains an integrated 8-step counter with three independent channels of control voltage output labeled A, B, and C. Each step includes three adjustable voltage controls, allowing precise voltage programming for each stage of the sequence. LED indicators next to each row provide clear visual feedback of the sequencer position during operation.

An internal clock generator allows the sequencer to run automatically, with adjustable stepping speed controlled by the Pulse Repetition Frequency and external rate inputs. Pulse width control allows the duration of each step to be adjusted from 0 to 100 percent. The module can also be manually stepped or reset using front-panel controls, and it integrates with other 2500 Series modules such as the 1026 Preset Voltages and 1050 Mix Sequencer for expanded modular sequencing capabilities.

Key Features

• 8-Step Sequencer Module: Generates sequential control voltages for modular synthesis
• 2500 Series Architecture: Authentic reproduction of classic 1970s modular circuitry
• Three CV Output Channels: Channels A, B, and C provide independent control voltage outputs
• Per-Step Voltage Control: Eight rows of controls allow adjustment of voltages for each sequence step
• Integrated Clock Generator: Internal clock allows automatic stepping of the sequencer
• Adjustable Clock Rate: Stepping speed adjustable via Pulse Repetition Frequency and external CV
• Pulse Width Control: Step duration adjustable from 0 to 100 percent
• Visual LED Indicators: Displays the active step position during operation
• Manual Control Functions: Front-panel buttons allow manual step advance and reset
• System Expansion: Compatible with other Behringer 2500 Series modules
• Eurorack Compatible Design: Designed for installation in standard Eurorack systems

Technical Specifications

Inputs
On / off
Type: 2 x 3.5 mm TS jacks, DC coupled
Impedance: 100 kΩ, unbalanced
Maximum input level: 10 V
Minimum switching threshold: 2.5 V, trigger

Rate
Type: 1 x 3.5 mm TS jack, DC coupled
Impedance: 100 kΩ, unbalanced
Maximum input level: 10 V, 1 V/oct.

Width
Type: 1 x 3.5 mm TS jack, DC coupled
Impedance: 100 kΩ, unbalanced
Maximum input level: 10 V

Step / reset
Type: 2 x 3.5 mm TS jacks, DC coupled
Impedance: 100 kΩ, unbalanced
Maximum input level: 10 V
Minimum switching threshold: 2.5 V

Outputs
Ch A / B / C
Type: 3 x 3.5 mm TS jacks, DC coupled
Impedance: 1 kΩ, unbalanced
Maximum output level: 10 V

Clock out
Type: 1 x 3.5 mm TS jack, DC coupled
Impedance: 1 kΩ, unbalanced
Maximum output level: 5 V

Position gates
Type: 8 x 3.5 mm TS jacks, DC coupled
Impedance: 1 kΩ, unbalanced
Maximum output level: 5 V

Controls
Rate: 1 x rotary knob, Low (0.3 Hz to 15 Hz) High (10 Hz to 400 Hz)
% Pulse width: 1 x rotary knob, 5% to 95%
Low / high: 1 x sliding switch
Int / ext: 1 x sliding switch
On / off: 1 x button, LED backlit
Sequencer voltage knobs: 24 x rotary knobs, 0 V to 10 V

Power
Power supply: Eurorack
Current draw: 70 mA (+12 V), 30 mA (-12 V)

Physical
Dimensions: 43 x 162 x 129 mm (1.7 x 6.4 x 5.1")
Rack units: 32 HP
Weight: 0.37 kg (0.81 lbs)