Steelphon S900 // Mellotron M400

video upload by foleytronics fx repair

"This is a demo of Tom’s Steelphon that got whooped by UPS - broken circuit boards, broken MDF case, no output. We took the case to be reproduced by Kent Meloy of Tunguska Guitars and in the meantime went to town on the electronics. There isn’t a schematic available anywhere, but after getting the rails back and the keyboard CV working, there was still no output. I isolated it to the filter board and realized the VCF is a Moog copy, component-for-component, so I used a Minimoog schematic to help troubleshoot the problem.

The Mellotron is mine and has undergone quite a bit of work. New pinch rollers, new motor control board, rebuilt the PSU, and fabbed a new key as one was missing."

STEELPHON 1970’s Italian Synthesizer SN 0450384

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via this auction

"Well functioning very rare monophonic analog synth with 2 oscillators and 2 noise generators.

One of the first synthesizer with PRESETS."

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Roland Sequencer 104 - System 100 Sequencing Vintage Steelphon Synthesizer

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video upload by Vintage Audio Institute Italia

Sequencer 104 Module pics via this auction

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Steelphon MAGO

video upload by

"Hello everybody my Hobby it's restore the old Combo organ and synth .
In this video i show you the test after restoration of rare Steelphon MAGO ."

This appears to be the first demo of the Steelphon MAGO. You can find pics of one posted here.

Steelphon S900

video upload by M&M

"Hello everybody my Hobby it's restore the old Combo organ and Synth.
In this video i show you the test after restoration of Steelphon S900 ."

You can find additional posts featuring the Steelphon S900 here.

Steelphon S900 synthesizer Demos

andrea marina

"Wave, lfo & filter demo"



via Urbanspaceman in the comments of this post.

Omar El Shariyi Oriental Music & a Mystery Synth

WEWANTSOUNDS

Anyone ID the synth? It reminds me of a Moog Sonic V, but that's clearly not it. Update: found it! :) It just clicked.  Funny how that happens.

This one surprisingly came to my inbox via https://records.theother.co.za. I found the video above from WEWANTSOUNDS who also has it for sale. For those with gift cards to burn you can find it on Amazon as well. Do your due dilligence on price, shipping, etc...

Details from the video above:

"INSTRUMENTAL CULT CLASSIC BY LEGENDARY EGYPTIAN MUSICIAN AMMAR EL SHEREI, FIRST RELEASED ON SOUTELPHAN IN 1976, IS REISSUED ON VINYL FOR THE FIRST TIME EVER

Wewantsounds is delighted to announce the reissue of Ammar El Sherei's superb instrumental album “Oriental Music” from 1976. Here, the iconic Egyptian musician and composer revisits six classic compositions by another Egyptian legend, Mohamed Abdel Wahab, in his own hypnotic way. This reissue has been newly remastered and comes in its beautiful original artwork."

Some pics of the cover and back.

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V.A.I. 2 : Farfisa Soundmaker - Steelphon S900 - Elka Drummer One - Binson Echorec 2

Vintage Audio Institute Italia

"Not too much too explain here, the big Elka Drummer in the video is an odd piece of gear, it's the classic drum machine but built in to a huge speaker.

Fun fact: Drummer-one means Big Drum in Italian slang.

The Farfisa Soundmaker is a polyphonic string machine and mono-synth with a lot of fun modulation options on board.

The Steelphon S900 is a dual oscillator monophonic synth from 1972 with tons of modulation capabilities, programmable presets (!) and use the famous Moog ladder filter.
With White and Pink noise that you can route to control the filter and tone this thing can really sound huge and is one of the very best italian Monophonic synths ever made.
If you'd like to know more - check out our video of Steelphon S900 here: [posted here, also see this one]


We make these videos as a showcase for our studio and for curious vintage heads - and for fun.

We don't dilly-dally too much with production and mixing but it can sound pretty good with headphones on."

Vintage 1970s Steelphon S900 SN 0450204

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via this auction

You can find a video demo of one posted here.

"Extremely rare monophonic italian synth made in the 70’s by Steelphon.
Completely serviced and ready to be used.
2 oscillators. White and red noise, very fast LFO able to modulate the 1st and the 2nd osc and the filter.
Classic Moog style ladder filter.
2 envelopes, 1 for the filter and 1 for the amp.
Unique analogue preset storage system, consisting of 6 boards with trimmers that control the parameters of the synth for 6 different presets.
Separate CV in for the 2 oscillators, V/oct and gate.
This synth sounds very unique and organic. It’s extremely rare, it is believed there is no more than 30 units in the world right now, probably 100 ever produced.
Used also by David Bowie."

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Steelphon S900 2 Oscillator Monophonic Synthesizer SN 0905027

Note: Auction links are affiliate links for which the site may be compensated.
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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Vintage Audio Institute - Italia 1.

Published on Mar 14, 2020 Vintage Audio Institute Italia

Farfisa Soundmaker
Eko Rhythm Maker
Steelphon S900
Binson Echorec 2

EMEAPP SONIC TEST DRIVE: Steelphon S900 with Oberheim Mini Sequencer

Published on Apr 16, 2019 EMEAPP

"Sonic Test Drive: Steelphon S900 with Oberheim Mini-Sequencer, Strymon Time Line and Strymon Big Sky pedals, from your good friends at EMEAPP."

Steelphon S900

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

Second one to go up for sale this week. These are quite rare. This one is listed for $5352.12, while the other is listed for $7,137.74.

STEELPHON S900 Vintage Analog Italian Synth

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"Vintage Analog Italian Synth
VERY RARE
Excellent Condition and Perfect Working Order
Just serviced
the serigraphy is slightly discolored (only in a few spots), typical of this synth

It has been used by David Bowie..."

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Steelphon S900 demo... one of the best analog synthesizer made in Italy

Published on Dec 21, 2018 VSMI

"Steelphon S900... 2 oscillators analog monophonic synthesizer Made in Italy. Multitrack recording in 2007."

Steelphon S900 Live Jam

Published on Apr 27, 2018 VSMI

"Live Jam with Steelphon S900 Italian Analog Monophonic Synthesizer. Arturia Beatstep first oscillator control & Keystep the second Steelphon's oscillator. CRB Diamond 723 drum sample on DM1 IPad Drum Machine... all as is, but I like it! ;)"

See the Steelphon label below for more.

Steelphon S900 (Version2)- Rare Analog Synth

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

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Steelphon MAGO

Note: Auction links are affiliate links for which the site may be compensated.

Here's a rare one. I believe this is the first Steelphon MAGO to be posted here on MATRIXSYNTH.

via this auction

"Smaller single oscillator version of better-known Steelphon S900. Extremely rare and impossible to find even in Italy.

Vintage 1970s Italian monophnic synthesizer.

For sale in excellent condition and perfect working order."

You can find a video of the Steelphon S900 here.

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EB.TV TECH: Thomas P. Heckmann's Devil's Kitchen Playlist

Published on Jan 21, 2016 Telekom Electronic Beats

Playlist:
STEELPHON S900 SYNTH PRESENTED BY THOMAS P. HECKMANN
SUZUKI OMNICHORD OM27 PRESENTED BY THOMAS P. HECKMANN
EDP WASP SYNTH PRESENTED BY THOMAS P. HECKMANN
TI LANGUAGE TRANSLATOR PRESENTED BY THOMAS P. HECKMANN
LINN LM-1 DRUM COMPUTER PRESENTED BY THOMAS P. HECKMANN

Steelphon Synthesizer

via Sylvia Wölfle on The MATRIXSYNTH Lounge

See the Steelphon channel below for only 10 other posts here on MATRIXSYNTH. You'll find video as well.