MATRIXSYNTH

KAWAI GB-1 Session Trainer Drum Machine

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This appears to be the first one featured on the site. You can find a demo of the GB-2 model here.

MT32-pi MIDI audio synthesizer (Roland MT-32 emulator based on Raspberry Pi 3)

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The MT32-Pi addon for MiSTer (EPIC MIDI SYNTH) video upload by allyourbasekris

"The mt32-pi is a software emulator of the legendary Roland MT-32 running on a baremetal kernal hosted by a raspberry pi, with bonus Fluidsynth support.
Learn more here!
https://github.com/dwhinham/mt32-pi

00:00 Start
05:19 MT32-Pi sounds
09:31 Sound Canvas in Doom"

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1970’s Stylophone Retro Pocket Synth w/ Original Box, Song Book & 7" Vinyl Record

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Yamaha DX7 Digital Programmable Algorithm Synth SN 133214 w/ Original Box

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"Yamaha DX7 Digital Programmable Algorithm Synth with New Battery, Volume and Sustain pedals in an Original Box.

To use it, you need to press power switch in the back on the right side, you will see # 88 on the screen, than E !, WELCOME TO E ! **YAMAHA DX-7** (as shown in pictures), after that you need press CARTRIDGE (the bottom line) than bank number and you'll hear desired voices, all voices from the Cartridge sounds Great !"

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Roland SH-2 Vintage Monophonic Analog Synthesizer

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ROLAND Jupiter-6

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How to Use the SONICWARE Liven XFM - FM Synthesizer Full Tutorial

video upload by ChrisLody

Demos in previous posts here.

"This video is a full tutorial for the Sonicware Liven XFM but I have only tried to cover each option on the device quickly while showing brief examples. It is intended to supplement the PDF manual that you can find on the Sonicware website here: https://sonicware.jp/pages/download

During the tutorial I'll try to explain each feature while building a short pattern.

00:00 Intro

00:49 Overview of the Liven XFM
A description of the physical construction and connectors

02:18 Getting Started
Powering up the device
Using Headphones or Line Out
Playing patterns
Shift and Func buttons, muting the speaker, changing headphone gain
Changing Tempo, Pattern Tempo and global tempo
Shift Lock function
Pattern, Bank and step buttons to load patterns, Pattern Chaining
Pattern page buttons, knob latch

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UNO Synth Pro Desktop - Preset Tour - Up Close & Personal - Nothing Else, Just The UNO Pro - Live

video upload by The Sound Test Room

Insomnia //Bloom/Chord/Subharmonicon/Mother32/STO/Rings/Plaits/Tides/Zadar/Ornament&Crime//

video upload by Aleatoric Machine

"Self-playing eurorack modular synthesizer patch
Variations on a 4 note sequence
Bloom plays one variation via Chord, STO, and Tides, with envelopes controlled by Contour and Function, and harmonization by Mood
Plaits and Rings play 2 variations from 2 different Turing Machines on Ornament & Crime, with masks controlled by sequences from 2x Stages and bouncing ball patterns generated by 2x Maths
Mother 32 plays another variation
Subharmonicon plays another variation
Chance and Wogglebug provide modulation
Mimeophon and Magneto provide delay
2x Verb provide reverb
4x 1u VCA provide dynamics
Overall form controlled by 4 envelopes from Zadar
Mixed into 2x Mixup"