Doepfer A-145-4 quad LFO Slim

The Doepfer A-145-4 is a quad LFO offering simple but essential modulation tools in an ultra-compact format. With four independent low-frequency oscillators, each providing triangle and square wave outputs, this is a perfect utility module for adding movement and variation to your patches.

Each LFO includes a dual-colour LED to indicate polarity (red for positive, yellow for negative) on the triangle waveform. This makes it easy to visually track modulation behavior.

The frequency range of each LFO can be individually adjusted via jumpers on the PCB:
• Standard range: ~50 Hz to ~0.04 Hz (approx. 25 seconds cycle – jumper removed)
• Extended slow range: ~2 Hz to ~0.002 Hz (approx. 8 minutes cycle – jumper installed)

Though it may not be flashy, the A-145-4 is a dependable workhorse—ideal when your system demands more modulation sources.

Key Features:
• 4 independent LFOs in one module
• Triangle and square wave outputs per LFO
• Dual-color LED for visualising triangle waveform polarity
• Individually switchable frequency ranges via jumpers
• Compact and efficient utility module
• Available in-store for demo