Digital guitar amplifier DG series preamp and effects packed into a compact stomp box.
Featuring eight types of amp simulators as well as a speaker simulator allowing a choice of speaker size and number of units.
Built-in effects include compression, chorus, flanger, phaser, rotary speaker, tremolo, delay, and reverb.

Demo by The Rolling Store

Demo by o-saka

Product Page

Review by Musiker-Board

Review by audiofanzine

Review by THe Gear Page

Review by guitarworld.de

Manual

DG-STOMP

Yamaha FC4A Pedal for Keyboards and Pianos

FC4A

The Yamaha PS-20 is a portable keyboard that was released in the 1980s. It is a miniature monophonic keyboard with built-in games, making it a fun and interactive instrument for musicians and non-musicians alike.

Demo by Pixel Notes Music

Demo by Sonic Circuitry 

Official Website

Review by Squier-Talk

Review by reddit /synthesizers

Review by mu:zines

Ps-20

Volume Foot Controller / Expression Pedal

Demo by Entera Carsten (Bass)

Demo by Shari Pedals