MATRIXSYNTH: Steelphon S900 2 Oscillator Monophonic Synthesizer SN 0905027

Friday, April 17, 2020

Steelphon S900 2 Oscillator Monophonic Synthesizer SN 0905027

Published on Mar 14, 2020 Vintage Audio Institute Italia

"Vintage Audio Institute - Italia
is a music studio and gear vendor in the hills of Florence.

There are a few good Steelphon S900 videos on here already, but we thought there was need for yet another one.
Here we explain how this for its time rather unique synthesizer has programmable preset sounds and has individual CV gate inputs for each oscillator.
A few of the photos are borrowed."

via this auction

"The Italian Beast Steelphon S900 up for sale, one of a very limited production run, the less than 100, all expertly hand-made in Turin, Italy in 1973.
Includes 2 pedals: Filter Expression Pedal
Sustain On/Off Pedal

and the Original Steelphon Club monitor.

The S900 Condition is Very Good, going on Excellent, it does have a few dings, please see photos, and the black panel with the logo some slight miscoloration. The filter-expression pedal has some slight wear.

Unusually good build-quality over-all, this is a reliable instrument, but can be a little sensitive to fluctuations in current and during warm-up, quite common for old synths.

It has been refurbished and recapped earlier this year in March.

The Steelphon S900 does stand up well to the Mini Moog, the Moog Ladder Filter is on board and it can produce earth shattering basses and piercing or haunting leads.

The Steelphon S900 has some great, rare features for the time:

1. Programmable Presets (first synth with programmable pre-sets to our knowledge, various parameters are easily accessible and adjustable with a mini screwdriver under the black panel with logo, an individual circuit board for each preset, six in total with a hidden preset as well :)

2. CV Gate inputs (works very well, individual CV input for each oscillator so you can have 2 arpeggios going at the same time (!).

Please check out the Youtube link, we made this video, it was partly made with this machine here for sale, and explains the various features.

220 Volt with European plug.

Ships from Italy with BRT/DPD/Fedex to the US and other continets, insured trackable shipping to Europe depending on which country, 5 day delivery, but please allow for more time due to customs and Covid19 issues."

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