Oberheim Xpander Demo

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Paper Street Audio Company

'Oberheim Xpander demo. Had the Xpander serviced and this is a demo video of some of the Xpander patches played through an Eventide H8000. Definitely not a performance video, intentionally simple playing just to show the general tone of the Xpander."

Video is from the listing linked below. Not sure if it's the same one. The video is from two months ago. You cand find additional demos of the Oberheim Xpander in previous posts here.

SN 700340 via this auction

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Hammond 102200 1974 Synthesizer SN 003098

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via this auction

'Hammond 102200 synthesizer manufactured in Japan in 1974/1975 where only 200 units were released for the whole world and of which it is said that only about 30 will remain operational, this makes this synth an authentic rarity within reach of very few people. It has a very authentic sound and is fully operational, it has a very pleasant key to play. The only defects it has is that it is missing a number 7 key in one of the lines of the matrix, discoloration of a small area in the front chrome and typical marks of use. Service manual is included. It is sent anywhere in the world."

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YAMAHA CS40M monophonic synthesizer

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via this auction

"Everything works as specified, overhauled before shipping to have long life and to keep original sounds.
Change all electrolytic capacitors and some short life transistors, opamps and logis ICs with new ones, and keys knobs, sliders, switches and jacks cleaning before shipping.

Work list (Excerpt) :
Change all elec. caps with new ones.
Change all transistors, tant. caps and opamps on Power Supply Board with new ones.
Change all tant. caps on PGM/DM boards with new ones.
Change opamps for KCV buffers on SK board with new ones.
Brand new memory backup battery and factory sound data installed.
Keys knobs, sliders, switches and jacks cleaning.
Adjustment."

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Vintage KORG MONO/POLY MP-4 Analog Synthesizer SN 376427

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via this auction

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Roland GR-300 Guitar Synthesizer SN 960657

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via this auction

6-voice polyphony
2 oscillators per voice
VCOs (voltage controlled oscillator) are directly harmonically locked to each string, but can be tuned separately
VCF (voltage controlled filter, low pass) -24 dB per octave, with envelope modulation (attack and sensitivity)
Low Frequency Oscillator, for Vibrato Effects
Built-in foot switch controls the VCO mode (single/dual), VCO harmonize pitch (detuning of the VCO's), and VCF mode (on, bypass, or inverted)
Pedal control input for the VCF
The GR-300 can output either the guitar, the synth, or a mix of the two
Synchronized, flashing LED status indicators
Dimensions: 15.7" (W) 11.4" (D) 3.9" (H)
Power Requirements: 20 watts

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ACCESS Virus Indigo 2 SN 10200439

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via this auction

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Exploring The Prophet 5 Synthesizer

Doctor Mix

'Here's a deep dive into the revered Prophet 5 vintage synthesizer! For 30 minutes I explore many of the sonic capabilities of this analogue beast, using iZotope's RX8 spectrogram to analyse its sound characteristics."

Sequential Prophet 6, SPHERES, 068 Ocean Go preset,

Bob I. Gomez

"Here is a tune for synthesizer performed on the Sequential Prophet 6. I use preset 068 Oceans Go. Name of the song is SPHERES."

Sequencial PRO3 + Modal ARGON8M + Elektron Digitakt

Masaki Takada

Topographic Drum Sequencer (GRIDS) 5U demo (+ Tanzmaus fill)

alternatingbitmusic

"A percussion-based demo using GRIDS along with a couple of extra sounds via an external drum machine."