Tuesday, May 03, 2016
XBASE 888 (Digital-side), SH-101, CMU-800 demo by Jordan Passmore
Published on May 3, 2016 Jordan Passmore
"This demo is of the JoMoX XBASE 888 (utilizing solely the digital, sample-based side of the drum machine, rather than the analog voices), Roland SH-101 (doing the bassline), and Roland CMU-800 (with the arpeggio melody). The Mutable Instruments MIDIpal is sequencing the CMU and the Roland SH-101 is running off of it's own sequencer. A Roland SBX-80 is the master clock, sending MIDI clock to the XBASE and MIDIpal and triggers to the SH-101's trigger in. The mixer is a Roland M-16E and the only effect is the Boss DM-2w analog delay.
I uploaded my own samples into the XBASE 888; a mix of LinnDrum and Oberheim DMX samples. The XBASE has an 8-bit sample playback engine for 6 of it's voices and they can either be one of the stock 808/909ish samples or user uploads (via the JoMoX Win/OSX utility)."
EMS Synthi A Rare Vintage Analog Synthesizer Mono Synth AKS MkII Demo
Note: Auction links are affiliate links for which the site may be compensated.
Published on May 3, 2016 VintageSynth2013
"Sound quality isn't great because I used built in microphone on camera and built in speaker on the EMS. It will sound much much better when used with real speakers in person."
via this auction
"Here's the rare chance you've been waiting for!
Legendary EMS Synthi A.
Functional: the right speaker is not working and the noise generator also is not working, and the power cable is a little DIY. There is some wear but otherwise it is functioning great.
Cosmetics: It definitely shows wear on the outside case and a fair bit of wear on the synth face as well. This is a well used Synthi and its age shows. This is not a minty unit so be sure to check out the pictures below to make sure you like it.
Sound: The EMS Synthi A is one of the most classic legendary mono synths, and it really is worth every penny, it has such unique huge analog sound and can get a range of tones like no other synth.
This is a great chance to own a legendary synth. Don't miss out!"
Published on May 3, 2016 VintageSynth2013
"Sound quality isn't great because I used built in microphone on camera and built in speaker on the EMS. It will sound much much better when used with real speakers in person."
via this auction

Legendary EMS Synthi A.
Functional: the right speaker is not working and the noise generator also is not working, and the power cable is a little DIY. There is some wear but otherwise it is functioning great.
Cosmetics: It definitely shows wear on the outside case and a fair bit of wear on the synth face as well. This is a well used Synthi and its age shows. This is not a minty unit so be sure to check out the pictures below to make sure you like it.
Sound: The EMS Synthi A is one of the most classic legendary mono synths, and it really is worth every penny, it has such unique huge analog sound and can get a range of tones like no other synth.
This is a great chance to own a legendary synth. Don't miss out!"
Ultra Rare CLEF Computer BAND-BOX
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
First one to be featured on MATRIXSYNTH.
"Here's something that you won't find everyday.
Ultra Rare, never seen on the market (probably less than a 1000 of these were produced)
CLEF BAND BOX, that is essentially an analog bass, chord machine made for the CLEF MASTER RHYTHM analog drum machine.
Here is the blurb from a sale ad from Clef 1982:
BANDBOX:
The Band-Box provides an electronic backing trio consisting of bass, drums and a chord instrument (one of 16 Waveform/Envelope combinations) with the capacity to store over 3000 User Programmable Chord changes on more than 120 different chords. Using advanced microprocessor technology, playback of 50-100 scores can be executed in any key and at a chosen tempo. Complete Music Pad is electronically indexed and stored on second battery backup . Facility exists for composition of intro, repeat chorus and code sections including multiple score sequences. sockets are provided for volume pedal and footswitches plus separate and mixed instruments outputs.
The clef master rhythm has several sounds and encoders for decay and volume, and its an expanded version of the Roland DR55, with more memory and a similar sequencer.
It comes in its custom made flight case.
This machine is sadly not working fully and the Master Rhythm sound board is missing but the sequencer pcb and everything else is there and works!!
Included are photocopies of issues of Practical electronic magazine with all the schematics and construction manual."
via this auction
First one to be featured on MATRIXSYNTH.


CLEF BAND BOX, that is essentially an analog bass, chord machine made for the CLEF MASTER RHYTHM analog drum machine.
Here is the blurb from a sale ad from Clef 1982:
BANDBOX:
The Band-Box provides an electronic backing trio consisting of bass, drums and a chord instrument (one of 16 Waveform/Envelope combinations) with the capacity to store over 3000 User Programmable Chord changes on more than 120 different chords. Using advanced microprocessor technology, playback of 50-100 scores can be executed in any key and at a chosen tempo. Complete Music Pad is electronically indexed and stored on second battery backup . Facility exists for composition of intro, repeat chorus and code sections including multiple score sequences. sockets are provided for volume pedal and footswitches plus separate and mixed instruments outputs.
The clef master rhythm has several sounds and encoders for decay and volume, and its an expanded version of the Roland DR55, with more memory and a similar sequencer.
It comes in its custom made flight case.
This machine is sadly not working fully and the Master Rhythm sound board is missing but the sequencer pcb and everything else is there and works!!
Included are photocopies of issues of Practical electronic magazine with all the schematics and construction manual."
Korg MONO / POLY Analogue Synthesizer with Case SN 373184
Vintage Original 1970s Oberheim Two Voice Synth + Sequencer
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"Classic synthesizer in excellent shape, fully restored and cleaned. It will be completely serviced again before shipping it will take 48 hours for a complete overhaul included in selling price.
Oberheim's first synthesizer was a single-voice mini-module called a SEM (Synthesizer Expander Module). However, in 1975, Oberheim created their first compact, programmable and polyphonic synthesizer by coupling two SEM modules to a 37-note keyboard and a simple analog sequencer. This was what became the Two Voice. Oberheim achieved a polyphonic sound not yet seen in ARP and Moog gear at the time by hard-wiring the two monophonic SEMs into the compact keyboard design.
In 1976 Oberheim came out with another module, the Polyphonic Synthesizer Programmer (see SEM). This could memorize the control voltages of many parameters for up to eight SEM modules. When these were added to the Two Voice, Oberheim finally had one of the earliest programmable and polyphonic instruments! Released alongside the Two Voice also came the Four Voice which had four SEMs installed, and a larger 49-note keyboard. And later, in 1977, a second tier was added above the four SEMs on the Four Voice to add yet another four SEMS, making the Eight Voice.
Two voices was great in 1975, and eight voices was pretty monstrous in the later seventies. But, a major drawback to these first Oberheim synths was that polyphony was achieved by having multiple modules. This meant that each voice had to be independently programmed. This also means that each voice has its own filter, making real-time filter sweeps of all your voices more than a handful! Fortunately the sequencer comes in handy for controlling each voice/module independently.
Despite its innovative features, the Two Voice was soon blown out of the water by the popular monophonic and truly polyphonic synths like the OSCar, ARP Odyssey and SH-101. The Two Voice has been used byVince Clarke and Vangelis."
via this auction

Oberheim's first synthesizer was a single-voice mini-module called a SEM (Synthesizer Expander Module). However, in 1975, Oberheim created their first compact, programmable and polyphonic synthesizer by coupling two SEM modules to a 37-note keyboard and a simple analog sequencer. This was what became the Two Voice. Oberheim achieved a polyphonic sound not yet seen in ARP and Moog gear at the time by hard-wiring the two monophonic SEMs into the compact keyboard design.
In 1976 Oberheim came out with another module, the Polyphonic Synthesizer Programmer (see SEM). This could memorize the control voltages of many parameters for up to eight SEM modules. When these were added to the Two Voice, Oberheim finally had one of the earliest programmable and polyphonic instruments! Released alongside the Two Voice also came the Four Voice which had four SEMs installed, and a larger 49-note keyboard. And later, in 1977, a second tier was added above the four SEMs on the Four Voice to add yet another four SEMS, making the Eight Voice.
Two voices was great in 1975, and eight voices was pretty monstrous in the later seventies. But, a major drawback to these first Oberheim synths was that polyphony was achieved by having multiple modules. This meant that each voice had to be independently programmed. This also means that each voice has its own filter, making real-time filter sweeps of all your voices more than a handful! Fortunately the sequencer comes in handy for controlling each voice/module independently.
Despite its innovative features, the Two Voice was soon blown out of the water by the popular monophonic and truly polyphonic synths like the OSCar, ARP Odyssey and SH-101. The Two Voice has been used byVince Clarke and Vangelis."
Overhauled Emulator III with Custom Colored Buttons & Upgrades
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"This Emulator III sampler is in perfect working condition and excellent physical condition. Fully upgraded with front mount loading CF card reader for fast and maximum storage. Includes easy to read newly installed OLED screen and two whisper quiet upgraded cooling fans. I can also install easy to see multi-colored buttons (no additional cost). I prefer these multi-colored buttons as the factory installed black buttons are not as easy to view with the black background (see photos for a comparison).
All sliders are very smooth and have been thoroughly cleaned and calibrated. All the front push buttons and contacts have been removed and cleaned. No sticky or unresponsive contacts. The front panel has no damage and the screen graphics is exceptionally clean with nothing worn out. The outside case has some scratches to the paint- typical of any rack mount unit.
Power supply is stable an calibrated. All of the internal circuit boards have been removed and contacts cleaned. This Emu III works flawlessly. Ill also include 6 formatted and bootable CF cards for sample storage (1 GB maximum per CF card) and the official E-mu tutorial manual."
via this auction

All sliders are very smooth and have been thoroughly cleaned and calibrated. All the front push buttons and contacts have been removed and cleaned. No sticky or unresponsive contacts. The front panel has no damage and the screen graphics is exceptionally clean with nothing worn out. The outside case has some scratches to the paint- typical of any rack mount unit.
Power supply is stable an calibrated. All of the internal circuit boards have been removed and contacts cleaned. This Emu III works flawlessly. Ill also include 6 formatted and bootable CF cards for sample storage (1 GB maximum per CF card) and the official E-mu tutorial manual."
Fully Upgraded E-mu EII+ Vintage Sampler - HxC, OLED, PSU, Decals, LEDS, Sliders Etc
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
Pics of the inside below.
"The EII+ is fully functional with the following NEW items installed: PSU, Decals, OLED display/HEX update, rotary encoders, sliders - including new resistors, HxC drive emulator with libraries/software, buttons and LEDs.
I'm sure I am forgetting a thing or two. Again, all of the parts are new. I have also installed a 'contrast' encoder to adjust the display viewing angle.
The unit functions silently and flawlessly. Both memory banks load up and sound great. The keybed was stripped down and cleaned meticulously.
This project was done right, and started out with a functioning machine, not a basket case.
Due to the new PSU, the original 5.25 drive is not powered, and has been left in place for looks only. All of the outputs are clean, and this machine sounds like nothing else."
via this auction
Pics of the inside below.

I'm sure I am forgetting a thing or two. Again, all of the parts are new. I have also installed a 'contrast' encoder to adjust the display viewing angle.
The unit functions silently and flawlessly. Both memory banks load up and sound great. The keybed was stripped down and cleaned meticulously.
This project was done right, and started out with a functioning machine, not a basket case.
Due to the new PSU, the original 5.25 drive is not powered, and has been left in place for looks only. All of the outputs are clean, and this machine sounds like nothing else."
EMU Systems Drumulator SN 4206
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
Pics of the inside below.
"EMU Systems Drumulator in Good working condition. The unit has been tested and is fully functional."
via this auction
Pics of the inside below.
"EMU Systems Drumulator in Good working condition. The unit has been tested and is fully functional."
Waldorf Rack Attack w/ Custom Yellow Fat Knobs
Werkstatt für Musikelektronik
Published on May 3, 2016 Kanal von cms4f
"Video shows a Yamaha CS-15 synthesizer serviced at Werkstatt für Musikelektronik in Basel, Switzerland - http://i2r.ch
Camera by Andy Schmid - http://cyberschmid.ch | Music 'Seedy Films (Instrumental)' by DMX Krew - http://dmxkrew.com"
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© 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.
MATRIXSYNTH - EVERYTHING SYNTH