1005 ModAmp VCA + Ring Modulator

Behringer 1005 ModAmp

Combining multiple signals through multiplication, the ARP 2500-inspired 1005 ModAmp from Behringer is a great way to add complex amplitude modulation to your Eurorack system. Behringer has looked to the past at the famous 2500 series synthesizer from ARP in order to create this module.

The 1005 ModAmp combines both a modulator and a VCA section to produce complex results. Ring modulation, sometimes called RM, or four quadrant multiplication, combines two signals to create rich inharmonic overtones reminiscent of bell or metallic sounds. Signals from subaudio rates up to 20kHz can be used at the A and B inputs. The initial gain of input A can be set by the amplifier gain knob at the top and the response can be set to exponential or linear.

The 1005 can operate in two modes, MOD and UNMOD, which can be turned on or off via the buttons or with external gate signals. In UNMOD mode, channel A passes directly to the VCA without being affected by the modulation circuit. CV outputs for both A and B channels with ratio and tune controls can be connected to add further harmonic overtones and complexity to the modulator signals. Able to create complex and harmonically interesting sounds as well as amplitude modulation for input signals, this module is a powerful tool in your setup.

1005 ModAmp Features

• Modulator and VCA
• Great for metallic bell like sounds
• Balanced or ring modulator can accept two signals and multiply them
• VCA with exponential or linear response
• CV outputs for input oscillators
• MOD and UNMOD modes selected by buttons and gate inputs
• CV input for VCA
• Attenuators for A and B inputs
• Able to accept signals from subaudio to 20kHz