Showing posts with label Keytek. Show all posts
Showing posts with label Keytek. Show all posts

Wednesday, April 12, 2023

Keytek CTS-5000 - Cross Table Sampling - Digital Piano - 1987

Note: This site contains affiliate links for which it may be compensated.
"KEYTEK CTS-5000Short (and very bad) demo" video upload by Jake

"This piano is for sale (too big in my studio)
As no demo is available for this rare device, here are some sounds straight from the engine. Really sorry for the crap soundtrack"

via this auction

"Very rare KEYTEK CTS-5000 Electronic piano - 1987. Cross Table Sampling wavetable synthesis technology 128 kilobyte ROM memory. 76 note weighted keyboard of very good quality

16 programmable sounds (Piano, vibraphone, electric piano, harpsichord)
Typical sounds, very '8 bit' grain
2 bass sounds in split mode
Audio outputs: Left, right, mono, bass, headphones
Programmable 7-band graphic equalizer Effects: Tremolo, detune MIDI in, out, thru
Audio demo available on last image of the slideshow

Very heavy device (21 kg), personal delivery is preferable."

Wednesday, March 29, 2023

Weird Obscure Lo-Fi Synthesizer Meets Noisy Obsolete FX Rack 🎹 Keytek CTS-2000 and Roland DEP-5

video upload by Reuben Jones

"The 1987 Keytek CTS-2000. A cool, quirky, lo-fi wavetable-style synthesizer from Italian brand Keytek, formerly known as Siel before being bought by Gibson USA....(!) Run through a 1984 Roland DEP-5 digital chorus/reverb.

All sounds made using the Keytek CTS-2000 and Roland DEP-5 Effects Processor.

Low-res voxel models made in MagicaVoxel."

Thursday, September 01, 2022

A Visit the Italian Synth Museum

video upload by Alex Ball

You can find additional posts featuring the museum here.

"Whilst taking a holiday in Italy we stopped off at Museo del Synth Marchigiano for a couple of days and this is the account of what I experienced there.

Enormous thanks to everyone at the museum, particularly Riccardo and Paolo.

0:00 Intro
1:19 Synket
4:40 EKO Computerhythm
8:01 Chilton Talentmaker
12:07 Crumar Compac Synth
13:41 Crumar DP-50
15:07 Elkatwin 61
16:29 Elka Synthex
19:38 CRB Oberon
21:29 CRB Voco Strings
22:53 CRB Uranus 2.0
24:34 Farfisa Polychrome
25:24 Logan Piano Strings Synthesizer
27:10 Welson Syntex
28:28 Keytek CTS-2000
29:47 Baleani Solista"

Friday, August 12, 2022

Keytek CTS-5000R Vintage Expander

Note: This site contains affiliate links for which it may be compensated.

via this auction

This one was spotted and sent in via M Me.

Only a handful featured in previous posts.

Googlish translation from the listing:

"An extremely rare Keytek CTS-5000R vintage expander with the sounds of the CTS5000
Fully functional
Midi Trio , Stereo out (left + right/mono ) Sustain Pedal in , Headphones out .
Sounds sampled in ROM/eprom are like bass , piano , spinnet etc."

Sunday, May 01, 2022

Keytek CTS2000 Cross Table Sampled Synthesizer SN 0279

Note: This site contains affiliate links for which it may be compensated.

via this auction

You can find a couple of videos featuring the CTS2000 in previous posts here.

"THE GIBSON Synthesizer. The only.

Its name: The Keytek CTS 2000
Analog True vintage : CURTIS CHIPS // CEM 5530 / 8 CEM 3389
Released in 1987.

RARE COLLECTOR Early Model number 279

This will be supplied with :

1 COMPLETE IN ENGLISH !! Instruction Manual ! 64 pages
1 EXTERNAL ORIGINAL MEMORY CARD of this KEYTEK CTS 2000 model to store even more of your sounds.

Fender has also released one on its side: The Chroma Polaris.

Story : Gibson had bought the Italian brand SIEL (Societa Industrie Elettroniche)
and worked in collaboration with its engineers who had already released
a lot of synthesizers including ( Cruise, Orchestra, Orchestra 2, Dk-70,
Ex-80, Dk-80 , Expander , Opera 6 , Dk-600 , Dk-700 , Kiwi ) and worked
themselves with suzuki and knew how to draw inspiration from analogs
from Korg .Moreover it would have been produced in Japan.

Gibson's synth, the Keytek CTS 2000 is a 330 plus wavetable based
synthesizer. But it is above all one of the last analog synths of this era. For
this it was equipped with Curtis chips, the same used in the little brother
of the Waldorf Wave, the Microwave .... as well as the Prophet 2000 which
is a Sequencial Audio / Dave Smith sampler ...

It has 6 voices with 2 oscillators per voice.
7 levels of envelope settings...
A Total MIDI Implementation....
An internal memory to save 48 sounds.
Finally its specialty of Cross Table Sample allows to mix for a sound of the
wavetables between them to obtain a combination of 330 X 329 so 9000 !

That is more than 9000 waveforms more than the sinusoid, the triangle,
the square, the sawtooth ! And this for a single voice ....
Each oscillator can be tuned differently for Fat sound .
An Lfo is also present to modulate these.
ADSR on 7 levels
All this in many combinations

One cannot simply overcome its possibilities.

It produces a unique sound. With it your instrumentations won't sound too much today.
He will add a personal color. It can produce percussive sounds, particular pads...

Another thing that differentiates the KEYTEK CTS 2000 is that very few copies
were produced in the world.
There are 2 other Keytek models but they are only weakly trimmed compared
to this one.

The model on sale was released in the very First GIBSON-SIEL workshops.

Number 279."

Saturday, April 02, 2022

Keytek M20 / Spacefield App - The Winter is gone - Music for the Big Twins Oaks (Landscapes Ambient)

video upload by VSMI - Vintage Synths Made in Italy

"Keytek M20 presets mini keyboard Made in Italy by Keytek (Siel) 80's thru Spacefield app on Ipad"

Tuesday, March 15, 2022

Unisono#1 - Music for 1 note & 7 Synths

video upload by VSMI - Vintage Synths Made in Italy

"Music for 1 Note & 7 Synths Made in Italy playing in Unisono
/ CRB Vocostrings - Welson Syntex - Jen Synx-508 - Crumar Composer - Jen SX1000 - Elka Synthex - Keytek CTS2000"

Sunday, January 23, 2022

LiveJam4FreedomOfChoice - Gem WK4/Elka Synthex/Jen Synx508/Keytek CTS2000/Solton Project100/Koushion

video upload by VSMI - Vintage Synths Made in Italy

"Live Jam improvisation as is with GeneralMusic WK4 drums groove, Elka Synthex and Solton Project100 control by Koushion sequencer on IPad2, Jen Synx508, Keytek CTS2000 solo... Viscount EFX100 Reverb/Montarbo DREV 128 Delay - Made in Italy machines only... 'Freedom of Choice' against Covid Restrictions in Italy. This is my own fight... "People dancing everywhere!" (Jefferson Airplane - Won't You Try/Saturday Afternoon) cause we need hugs and kisses again!"

Friday, June 12, 2020

Keytek CTS-2000

Note: This site contains affiliate links for which it may be compensated.

via this auction

"Originally made by Italian synth maker Siel. The Keytek CTS 2000 is a digital synthesizer with analog resonant filters. It has 2 oscillators per voice with 8 voices and analogue CEM 3389 filters. The same as in the Waldorf Microwave 1 and Sequential Prophet VS. (it also have a CEM 5530 like in the prophet VS)

Additionally it features Cross Table Synthesis which is described as wavetable synthesis with 333 digitally sampled waveforms. You can control up to 6 wavetables per voice with complete analog processing for each voice including 24db per octave filter. 2 envelope generators with up to 5 parameters and 3 LFO's. 6 data entry slider for real time editing of all parameters."

Tuesday, January 07, 2020

Keyboard Mag. Dec '87 | What Was In It?

Published on Jan 7, 2020 Espen Kraft

"Back in the 80s I bought Keyboard Magazine quite often, especially when there was these synth 'clinics' features inside, This issue from Dec. 1987 has a Roland D-50 clinic by Eric Pershing so naturally I bought this. But what else whas featured inside this issue?
Take a break and come with me as I go through the complete magazine with you."

Saturday, March 02, 2019

Keytek CTS-2000 (1987) demo

Published on Mar 2, 2019 VSMI

"Keytek CTS-2000... cross table sampled synthesizer looping with LoopTree and Echopad in Ipad
61 key Velocity sensitive Keyboard.
6 voice with 2 signal sources per voice.
320 wavetables in ROM for instant recall.
Analog signal processing on each voice, VCF and VCA each with a 7 stage envelope generator.
8 data entry sliders and full alpha/numeric display for one of the most interactive, user friendly, editing systens found on a synthesizer.
Polytimbric up to 5 zones of 1 octave each.
48 user programmables presets in internal memory.
External data cartridges.
Full MIDI implementation, each zone completely assignable.
Stereo outputs, with 5 different panpots on every preset."

Tuesday, June 05, 2018

KEYTEK CTS 2000 TRANSWAVE Synthesizer w/ Analog Filters

Note: This site contains affiliate links for which it may be compensated.

via this auction

You can find a few demos of the KEYTEK CTS 2000 in the archives.

"The CTS 2000 is a sound designers dream taking the Transwave wavetable concept such as the Ensoniq Fizmo and comes with a hybrid of wavetables and analog resonant CEM filters like the Waldorf Microwave 1.

If you're into ambient atmospheric and organic sounds or a hybrid of between the two this synth is an undiscovered gem! Think Boards of Canada meets Aphex Twin with those digital textures warping into the gritty analog filters. Comprised of 8bit waveforms there's two oscilators per voice with eight voices and plenty of envelopes to mix and manipulate 8bit waveforms into one another.

The synth needs time and patience, look beyond the presets! Once you start manipulating the and storing sounds you begin to see the true extent of how powerful a synth this really is.
Its not for the faint hearted plug and play producer, but once you start using it the controls and parameters are straight forward.

With 333 digitally sampled waveforms. You can control up to 6 wavetables per voice with complete analog processing for each voice including 24db per octave filter. 2 envelope generators with up to 5 parameters and 3 LFO's. 6 data entry slider for real time editing of all parameters"

Wednesday, December 06, 2017

Keytek CTS-2000 filter sequencing demo - cross wave table Made in Italy

Published on Dec 6, 2017 VSMI

"a short video about Keytek CTS-2000 italian synthesizer… more soon on"

Sunday, November 26, 2017

Keytek CTS-5000 R & CTS-1000 G

Note: This site contains affiliate links for which it may be compensated.

Pics from a couple of listings in Switzerland, spotted by swissdoc. You don't see these often.

The CTS-1000 G SN 0049 listed here is a preset rack version of the CTS-2000 synth and the CTS-5000 R SN 0206 listed here is the rack version of the CTS-5000 Electronic Piano.

You can find a handful of Keytek products in the archives here.

Thursday, August 17, 2017


Published on Aug 17, 2017 synths colors

Thursday, August 10, 2017


synths colors
Published on Aug 10, 2017

Wednesday, August 02, 2017


Published on Aug 2, 2017 synths colors

"No External Effect Added, As Usual..."

Saturday, July 29, 2017


Published on Jul 29, 2017 synths colors

Monday, October 21, 2013


Note: This site contains affiliate links for which it may be compensated.

via this auction

Not the best pics, but you don't see these often. Click here for previous posts including video demos.

"vintage synthesizer with analog resonant filters in excellent working condition.  It has 2 oscillators per voice, 8 voices and analogue CEM 3389 filters, the same as in the Waldorf Microwave I.  Cross table synthesis is a kind of wavetable synthesis - with 333 digitally sampled waveforms -control up to 6 wave tables per voice with complete analog processing for each voice incl. 24db per octave filter. 2 times 5 parameter envelope generators & 3 LFO's. 6 data entry slider for real time editing of parameters."

Friday, June 28, 2013

Keytek CTS-2000 (Jeremy Soule - Menu [Secret of Evermore])

Published on Apr 29, 2013 acreil·67 videos

"Multitracked and heavily processed Keytek CTS-2000 arrangement of the menu screen music from Secret of Evermore. The idea was to do an elaborate "dub mix" on each track individually. Recorded 2009?

All synths: Keytek CTS-2000
Drums: Yamaha RX5, Yamaha RY30
Processing: Tapco 4400, Digitech RDS 3.6, Ibanez SDR-1000, Roland VP-70, Alesis Quadraverb, Boss PH-1, Peavey T-Max, Dave Smith Instruments Evolver, Alesis 1622"

Keytek CTS-2000 Cross Wave examples

Published on Apr 29, 2013

"Here are several examples of single oscillator waveform crossfades. The Keytek CTS-2000 can crossfade between 3 waveforms per oscillator, with a 2 stage envelope (two times and an intermediate breakpoint) for each crossfade. The IC responsible for this is the SGS M114S, which was also used in the Cheetah MS800, Amstrad CKX100 and Solton K160, as well as the other Keytek models (CTS-1000G, CTS-400, CTS-5000) and some obscure pinball machines.


Update via acreil in the comments: "I have a writeup on the CTS-2000 that I can publish soon, once I do some editing. Until then I'd like to suggest this as a more appropriate demo:"

Keytek CTS-2000 (Inoyama Land - Shuffer)

Uploaded on Nov 5, 2011

"Arrangement of Shuffer by Inoyama Land, using multitracked Keytek CTS-2000 (rare wavetable synth, now sold). I had modified it some to make the sound brighter. Reverb added in Pure Data (my own algorithm). I just played along to the original rather than use a click track or sequencer. It came out a little messy, but I think it suits the composition. Recorded 2011.


Patch n Tweak
Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.