Maestro Echoplex EP-4 vs Roland RE-301

Two classic analog tape delays, the Maestro Echoplex Ep-4 and the Roland RE-301 Chorus Echo are compared using a Moog synth.

Ring modulator shootout: Moogerfooger MF-102 vs. Vermona RM1

Ring modulation is an audio effect that's used mostly by experrymental musicians and producers. There are many different models and sounds, so how do you choose the ring modulator that's right for you?

The Big Gundown: Boss RE-20 Twin Pedal vs Roland RE-201 Space Echo

The Boss RE-20 Twin Pedal is the digital cousin of the classic analog tape based Roland RE-201 Space Echo. The Boss pedal was released in 2007. Here's a small demonstration at NAMM 2007.

Big Doepfer filter shootout - 8 Doepfer filters (and an Arp 4075) compared

A-108 6/12/24/48dB Low Pass Filter a pimped Moog-ladder design
A-105 24dB SSM Low Pass Filter based on the SSM2044 filter chip
A-101-1 Vactrol multitype input filter based on a design by Nyle Steiner (12dB / out 2)
A-102 Diode Low Pass a reproduction of 'a legendary low pass filter design' (24dB)
A-106-1 Xtreme Lowpass/Highpass Filter a pimped Korg MS20 filter
A-122 24dB Low Pass 2 based on the CEM 3320 chip made by Curtis Electromusic Specialties
A-124 Wasp filter based on the EDP Wasp filter made originally by Electronic Dream Plant (12dB multimode)
A-103 18dB Low Pass a reproduction of the Roland TB-303 filter
Arp 4075 filter (bandwidth mod) from an Arp Axxe as a non-Doepfer reference
Dry signal