Yamaha DX7 IIFD - serviced - with Grey Matter E! upgrade

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via this auction

"Since you're looking, you know what this is already, so I won't bore you with the details. Yes, it's a DX7, and it's the top-end 16-bit, 16-voice bi-timbral version, so what's so different about this one? Let's see ....

DX7 II fd, with a floppy drive that actually works! They never do 😁
Includes the famous Grey Matter E! extension card, greatly extending its usefulness
Version 1.2 E! firmware, the latest revision
Brand-new battery fitted
Recently professionally serviced and calibrated (such that you can with a DX7)
Factory patches loaded
Grey Matter E! demo diskette and E! patches/performances included"

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Yamaha DX7 Grey Matter

via this auction

"Yamaha DX-7 FM synthesizer with Grey Matter Response upgrade"

See this post for more details on Grey Matter.

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YAMAHA DX7 II FM with Grey Matter E! FM Synthesizer (1987) *Exhale*

Published on Mar 12, 2019 RetroSound

"(c) 2019 vintage synthesizer demo track by RetroSound

all synthesizer sounds: #Yamaha #DX7 II FD with Grey Matter E! board
drums: LinnDrum
recording: multi-track, all played by hand, no MIDI
fx: reverb and delay

I use the functions of the Grey Matter E! expansion here."

Yamaha DX7 II FD synth with Grey Matter expansion

via this auction

"Includes the (somewhat rare but extremely useful) Grey Matter expansion board installed. It is version 1.20.

Some of the features of the Grey Matter expansion:
# extra patch memory (with function data for EACH patch)
# patch mapping
# master contoller functions
# transmission on two midi channels
# stacking of sound (makes it thicker but only 8 note poly)
# 8 voice multi-timbral capability
# a sequencer
# a MIDI monitor
# a simple, "interactive" player mode"

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Yamaha DX7 II FD with Grey Matter E! Upgrade & Extras

via this auction

"Grey Matter E! board installed by the Yamaha dealer. This expansion board adds a 16-track sequencer and increases the polyphony of the keyboard.

The internal battery was professionally replaced earlier this month (July 2011). All the keys, buttons, wheels and sliders work.

Included in this auction are the following accessories and material:

The original printed Yamana DX7 II owner's manual.
The original Grey Matter E! owner's manual.
Two blank RAM cartridges.
The original ROM cartridge, containing the original, unaltered factory sounds.
One Yamaha BC-1 breath controller, with carrying case
Two floppy disks containing the following: a) Yamaha Master Disk Collection and b) E! Demonstration Software disk
An 88-page book entitled "Yamaha Easy DX7"
A 162-page book entitled "Yamaha DX7 II FD: A New Beginning", by Lorenz Rychner (Alexander Publishing)
A 193-page book entitled, "E! Update for the Yamaha DX7 II", by Steve Preskitt (Alexander Publishing)
The entire 18-volume Yamaha DX7 II FD Supplemental Booklet series, covering these topics:

Quick Reference Guide
Utility Parameter Reference Guide
Modifying Preset Voices
MIDI Technical Data and Charts
Advanced Microtuning Data
The Psychoacoustics of Microtuning
The Acoustics of Microtuning
The Mathematics & History of Microtuning
Exploring the Preset Microtunings
Macrotuning
Creating New FM Voices
Voicing Parameter Reference Guide
Memory Management
Realtime Parameter Change
Advanced Controller Usage
Understanding Fractional Scalings
Programming Fractional Scalings
Advanced MIDI Applications"

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Yamaha DX7 with E! Grey Matter Upgrade & Sticker

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via this auction

"Comes with the original Owner's Manual, original E!Grey Matter Manual and sticker!!!" Also comes with "sheet music stand and sustain pedal that goes with the synth"

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Yamaha DX7 II FD synthesizer with Grey Matter Response E! and Voice ROMS

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via this auction

"Yamaha DX7 II FD synthesizer (with all of the trimmings!) workstation with the Grey Matter Response E! expansion board installed. This DX7 II FD is in excellent shape. All the keys work and look perfect.

This auction also includes the Original rare cartridges 101-107 and a Bo Tomlin Cartridge, the ADP1 adapter, a BC1 breath controller and a sustain pedal."

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Yamaha DX7IIFD 61-Key 16-Voice Digital Synthesizer with Floppy Drive & E! Grey Matter Card

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via this auction

"Yamaha DX7iiFD with E! grey matter card installed and with data rom cartridge."

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Yamaha DX7IIFD 61-Key 16-Voice Synthesizer w/ Grey Matter E! & Xtras SN 30525599

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via this auction

"Includes flight case, books, disk. Has Grey Matter E! expansion."

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YAMAHA DX7IIFD Synthesizer 1987 + GREY MATTER E! | HD DEMO

Published on Dec 15, 2016 AnalogAudio1

"(c) 2016 by AnalogAudio1

Demo of the YAMAHA DX7IIFD digital synthesizer (frequency modulation synthesis) from 1987. I played it along with a Dynacord DRP 20 (reverb) and sometimes with a Korg SDD-3000 (delay).

The DX7II(F)D was the successor of the classic DX7 from 1983. This unit has the GREY MATTER E! expansion board installed, which was produced in the USA from 1987 to 1989. Even today it adds a lot of useful, additional capabilities to the DX7II(F)D/S. You get 256 RAM memories for patches, 8x multitimbrality (like the Yamaha TX802), chord memory, arpeggiator, a 16-track pattern sequencer (much like the Ensoniq ESQ-1's sequencer) and assignable sliders (assignable to most parameters of the sound engine - frequencies, envelopes, feedback level, operator output levels...).

Without a doubt, this expansion is a 'must have' for real DX7II fans."

YAMAHA DX7 II FM Synthesizer with Grey Matter E!

Published on Mar 12, 2015 RetroSound

"(c) 2015 vintage synthesizer demo by RetroSound

YAMAHA DX7II FD FM Synthesizer with GREY MATTER E! expansion (1987)

spec:
Octal Mode (8 different patches can be played in one Performance), voice stacking, random detune, patch mapping, velocity processing, micro-tuning, pattern sequencer, arpeggiator, 4 memory banks and a lot more"

Yamaha DX7 II FD Synthesizer with Grey Matter Response E! Board & Voice ROMs

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via this auction

"Up for auction is a Yamaha DX7 II FD synthesizer (with all of the trimmings!) workstation with the Grey Matter Response E! expansion board installed. This DX7 II FD is in excellent shape. All the keys work and look perfect.

This auction also includes the Original rare cartridges 101-107 and a Bo Tomlin Cartridge, the ADP1 adapter, a BC1 breath controller and a sustain pedal."

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Yamaha DX7IID SN 14328 with Grey Matter E! Upgrade

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via this auction

"This classic Yamaha DX7II/D is in near mint condition and it is fully functional.

Grey Matter E! Module is installed.
INCLUDED: The ORIGINAL BOX, installation instructions, anti-static bag, and INCLUDED: Demonstration Software (3½" floppy disc) for the E! module, and
INCLUDED: The IC 23 CHIP, which was removed from the DX7II/D during the installation of the E! module, is also provided in the (unlikely) event that the buyer wishes to return the DX7II/D to its original factory configuration.

A NEW LITHIUM BATTERY was installed during recent inspection..."

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Yamaha DX7 IID E! Grey Matter Demo by DKS SYNTH LAB

Published on Sep 6, 2017 DKS SYNTH LAB

Update:

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Yamaha DX7IIFD + GREY Matter E! + TX802 Expander SNs NM01307 & NP01516

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via this auction

"FM synth masterpieces: Yamaha DX7IIFD + GREY matter E! + TX802 expander (8x dx7II, 8 individual outs) ALL is the BEST conditions you can found, used in studio only, recently inspected and cleanded inside."

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YAMAHA DX7 II FM Synthesizer with Grey Matter E! expansion board - Performance Mode

video upload by RetroSound

"(c)2007-22 by RetroSound
supported by UVI: http://bit.ly/retrosound-uvi

❤️ Support #RetroSound​ channel: https://retrosound.creator-spring.com

YAMAHA DX7II FD FM Synthesizer with GREY MATTER E! expansion (1987)

E! board spec:
- octal mode (8 different patches can be played in one performance)
- voice stacking
- random detune
- patch mapping
- velocity processing
- micro-tuning
- pattern sequencer
- arpeggiator
- 4 new memory banks
and a lot more.

I used in the demo video no external sequencing. All sequences, arpeggios, chords are internal made with the E! expansion board.

0:08 Performance Mode
8:52 Arpeggio Mode
9:37 Chord Mode
11:00 Octal Mode
12:05 Percussion

The YAMAHA DX7 II is one of my absolute fav synths ever.
Here can you find the full DX7 playlist with a lot single sound demos and one synth demo tracks. Enjoy.

The DX7 playlist:"

Yamaha DX7 IID w/Grey Matter E! Expansion (updated version 1.20) + Custom Hardcase + Data Cart

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via this auction

Here is a wonderful and legendary Yamaha DX7 IID in perfect working and aesthetic conditions!

- Grey Matter E! Expansion installed on it (latest updated version 1.20).
- FULLY SERVICED by pro tecnician.
- Aftertouch calibrated and perfectly working.
- Data rom cartridge included.
- Custom Hardcase included.

In just one word: PERFECT.
Ready to go.

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YAMAHA DX 7 II FD with Grey Matter Upgrade

via this auction

A search on Grey Matter will bring up previous posts with more info.

Yamaha DX7 II D - Grey Matter

Update: I do not want to get into the habit of policing auctions, but as always be careful. The odd thing about this seller is zero feedback with the claim to having an old account with tons of positive feedback. Then why not use the old account with the positive feedback? On the other hand, all of the images for the sellers other auctions seem to have the same lighting, leading one to believe either he took them or he managed to find them somewhere. BTW, if you ever catch images from another location, please comment and I'll update the post.

Title link takes you to shots pulled via this auction. You can find more info on the Grey Matter add-on on Dave Benson's DX7 Page.

In short:

The DX7 version gives:
# extra patch memory (with function data for EACH patch)
# optional ROM sounds from GMR, allowing 576 patches in a DX7
# patch mapping
# master contoller functions
# transmission on two midi channels
# stacking of sound (makes it thicker but only 8 note poly)
# ...and more...

The DX7II/FD version {includes all of the above?} and adds:
# 8 voice multi-timbral capability
# a sequencer
# a MIDI monitor
# a simple, "interactive" player mode

Again for more info including the list of individual MIDI enhancements check out Dave Benson's DX7 Page.

Yamaha DX7 Grey Matter Response E Board

via this auction

"Yamaha DX7 Grey Matter Response "E" Board removed from a DX7. This board was a working unit when it was removed. This is for the DX7 series one, not meant to work with the DX7II. Comes with install instructions, operational manual and of course the "E" board label."