Acid tones Virus

YouTube via kenspocket
"Access virus "ACIDTONES" System exclusive, Synth sounds programed by Kens pocket... For more info on these sounds and how to obtain them please email us or check out the websites below !-) www.soundwavechildren.netfirms.com www.cdbaby.com/Kenspocket"

ElectroKraft.com NES Clone with Super Synth Drums Cartrdige

YouTube via orphiusflux
"I'm using the Yobo NES clone system along with the Super Synth Drums Cartridge. Using only the gamepad controllers o create true 8 bit NES percussion."

Setting up the disco loop patch on the Korg MS-20

YouTube via zioguido
"It's all explained in the video... have fun! The MS-20 is a freaky funny synth, you can do nothing and anything with it, it's just a matter of creativity :)"

Kamoni - Live on Daily Session

YouTube via kamoni. Click here for more.
"Kamoni plays a set on Daily Session (www.dailysession.com) with a drumKat and Elektron Monomachine and Machinedrum. Watch the full set at www.dailysession.com"

HardSID 4U playing a Lotus theme

YouTube via Ogrim88. via Nusonica

"I am giving my brand new HardSID 4U a go, with the main theme from one of the Lotus games. The HardSID takes up to four SID-chips from the Commodore 64. Sounds freaking awesome! Audio is recorded directly from the HardSID 4U to my recording soundcard, E-MU 1820. There is two 6581-type SIDs and two 6582 (which sounds like the 8580)."

Update via Ogrim in the comments: "The pictures I used in the video, are avalible at my site www.ogrim.net"

Cat + Synths..

via trash_audio. Also see this post for some ARP 2500 and more.

Roalnd RE-301 Space Echo

images via this auction

KORG MS-20 MK1 analog synth circuit board

images via this auction
"KORG MS-20 mainboard MK1, the first one produced by Korg with two KORG 35 Filter IC's. You can create a custom analog synthesizer or you can "upgrade" the new MS20 series mainboard. This filter is AMAZING, one of the powerful of this planet!!! This mainboard is 100% complete of ALL components and also the potentiometers, selectors etc...It is a synth ready to play! ;-) The paramenter configuration is the same of a MS-20 as well, except the patch board, keyboard and power supply." inside a KORG MS20

KORG MS03

images via this auction
"This unit produces VCO CV (control voltage) signals and trigger (gate) signals so that you can use an electric guitar, microphone, or other transducer output (from an acoustic instrument, for example) to "play" a synthesizer like a KORG MS-10 for example.... A variety of remote control input jacks let you use foot switches for more freedom and flexibility during live performance. With this amazing unit you can instantly put together your own guitar synthesizer, vocal synthesizer, etc., by simple connection with any synthesizer equipped with VCO CV IN and TRIGGER (Gate) IN input jacks."

KORG MS02

images via this auction
"The Korg Interface MS-02 is designed for the purpose of connecting Korg MS-Series synthesizers with other synthesizers available throughout the world. This sophisticated signal processor greatly enhances the performance possibilities of the MS-Series. Among presently available music synthesizers, there are two different types of control system used for the VCO (voltage controlled oscillator) and EG (envelope generator). One of these systems is used by Korg and Yamaha; the other is employed by every other synthesizer manufacturer. The Korg MS-02 provides you with a way to change the control signals of one system into the control signals used in the other system. In this way, it acts as an interface so that any two synthesizers can be used together, provided that the synthesizers are equipped with the conventional input and output jacks for control voltage and trigger or gate signals."