Rolls MO2020 Test Tone Oscillator mandolin Continuously variable multipole low-pass Filter

Continuously variable multipole low-pass Filter for Octave sound

It works with most any mic stand and helps hold the mic securely while you play your instrument or give an energetic

NSB-series stage boxes

The loudspeaker features a 4-pole Euroblock connector for loop thru wiring

with a warm and clear low end

Rolls MO2020 Test Tone Oscillator mandolin Continuously variable multipole low-pass FilterThe MO2020 provides a sine and square wave output on two 1 4" jacks. The frequency range is variable from 20Hz to 24kHz, it accepts a 1. 2 to 5 volt dc input on a 1 4" jack for external frequency control, and a 10 dB Output Pad is included to provide a 10 dB reference signal.