Tested and its 100% working.

Serial number 5568

Please look at photos for condition.” Link

This unit was obtained from the original owner. With the exception of some scratches near the low ‘F’ key and a small chip on the right rear corner of the body, it is in excellent condition (see photos).

The pots, switches, and sliders work fine. The knobs and slider caps are intact. All 32 keys function properly. The painted graphics are complete and unmarred. The headphone jack works. The input and output RCA connectors and pitch and trigger ports have not been checked, so their condition is unknown. The original owners manual is included.

Additionally, there was a foam sheet under the control section designed to keep dust and dirt out of the unit. Undoubtedly, this has long since decomposed and will need to be cleaned out and replaced.

Although we have gone through the tutorial twice and have found everything to be working as stated, this unit is being sold “as is” and no returns will be accepted.” Link

This listing is for a unique Realistic Moog Concertmate MG-1 that has been modified and now has MIDI input and control, filter audio input, and improved retrigger speed and glide response. Here is a list of all modifications:

Sticky black foam removed
1/4″ Audio jacks for input and output (see photos below)
External audio input to filter (see photos below)
Improved gate response
Multitrigger & continuous glide
Octave pitch drop
MIDI2CV – Design: Bojan Burkeljc
Notes – CV/Gate
Velocity – Filter Cutoff Frequency CV
MIDI CC#1 – Filter Cutoff Frequency CV
MIDI CC#2 – Oscillator 1 – Pulse Width (~25-50% Duty Cycle)
MIDI CC#3 – Oscillator 2 – Pulse Width (~10-35% Duty Cycle)
CV/Gate (From MIDI or Keyboard) Select switch

Cosmetically, the MG-1 is in very good shape. The case is in excellent condition for its age, but the keys have some scuffs and rough patches. There is one slide cap missing and some are slightly loose.

These modifications transform the existing MG-1 into an expressive, responsive, and controllable analog monosynth with a lush Moog ladder-filter. One of the first things I noticed when playing this MG-1 with a MIDI controller was how dynamic it felt. The filter really opened up when I played heavy-handed, and became smooth and dark when I played lightly. I then used MIDI software to generate and apply MIDI CC LFOs to the pulse width of both oscillators and then it started getting complex… The pulse width modulation isn’t over-the-top, it stays within a range that adds character but preserves the overall Moog sound. With the MIDI LFOs running, I turned up the MG-1′s internal modulation routing and that resulting sound easily surpassed the original MG-1, it reminded my of playing a Mono/Poly or a Pro One. On top of that, you can add a MIDI LFO or the internal modulation to the filter cutoff.

To the left of the keyboard, there is a switch to select between MIDI keyboard control or internal keyboard control.

The MIDI input is by far the biggest upgrade to this MG-1 – with this interface you can control the notes, the filter cutoff, pulse width of oscillator one, and pulse width of oscillator two. In addition, the midi note-velocity controls the filter cutoff. Both the filter input and the MG-1 output are 1/4″ jacks (they take the place of the cv/gate in). The MIDI board is a MIDI2CV, designed by Bojan Burkeljc. The board converts MIDI data from note on/off messages to pitch and gate voltages, velocity to filter cutoff voltage, cc#1 to filter cutoff voltage, cc#2 to pulse width cv for oscillator 1, and cc#3 to pulse width cv for oscillator 2.

The sticky black foam has been removed from the MG-1.

The filter input and MG-1 output use the existing 1/4″ pitch and trig jacks on the back panel (see photos below). The jacks are unlabeled in order to preserve the original aesthetics as best as possible.

The external audio filter input can be mixed with the other signals, since it enters the circuit in the mix section behind a resistor.

The improved gate response affects the keyboard gate and allows for faster internal keyboard playing (quicker successions of triggered notes)

The multitrigger modification affects play of the internal keyboard. It restores Moog’s typical low-note priority, retriggers when you play a new note and release a note to return to the original note. It also adds continuous glide, such that the glide will not stop in-between notes (and off-pitch) if you take your hands off the keys, the pitch will continue to glide to the note you played.

The output sounds best with the volume somewhere in the middle. You can turn it up to full volume to get interesting overdrive effects. ” Link

The first owner bought it new in the box in 1980 (it was on the clearance table!) and I obtained it from him in 2003, it has seen only studio use and is in great shape as you can see.

The only issue is the raised E key in the top octave; I can ship with a small foam pad on the underside of the case edge to even it out but it’s best fixed by a professional, only takes a few minutes. All keys work.
Serial number 1549, all knobs and switches work and are original; all jacks are functional. You can interface the new Moogerfooger pedals with some of the rear panel jacks!
Pressure sensitivity works well across the whole keyboard, all functions/routings work with all destinations. The pitch ribbon works well too.
It takes about 5 seconds to start making noise but about 5 minutes to warm up completely; it stays in tune well but the interval between both oscillators may need to be fine tuned after warm up. This is not at all unusual with older analog gear.

Cosmetically it’s about a 9 out of 10 with the exception of the key and some wear on the pitch ribbon. This is a great chance to get a very expressive vintage synthesizer with lots of adaptation possibilities to the Moogerfooger line!

I’m not going to tell you this is a Minimoog or better… it’s not. It’s different and does some cool things the Mini doesn’t but they don’t sound similar for the most part. The pressure sensitivity makes the board… the oscillators are kind of limited as they’re tied together in octaves but the pressure, ribbon and routings are very fun. This is a GREAT performance synth for studio or live (get a hard case, I never did…)

I’ll ship in highly reinforced and secured boxes, no case with this keyboard. You are paying something for packing in addition to postage.” Link

These were marketed by Radio Shack in the early 1980s, but were actually built by the original Moog Music Inc. Hence, I felt it needed to be represented like an amazing
vintage Moog should be with Moog logos and real wood panels!

The MG 1 is known for it’s evil goo problem. This one has been thoroughly de-gooped and ALL the sliders, switches, plastic sliders caps and knob covers are BRAND NEW!
This is the most amazing MG 1 ever and even graced the stage of Moogfest 2010! ” Link

Serviced and 100% working

Here’s your chance to get this fantastic vintage Moog Analogue synth. In full working condition and just been serviced too
All functions, switches and slide pots are in full working condition

Work done

Key contacts checked and cleaned with Deoxit contact cleaner
All toggle switches cleaned
Solder joints checked and reworked where required
All voices calibrated and tuned
Keys cleaned
New set of color coded slider caps fitted. Each color cap is the same as the function text color so easy to find settings quicker

Condition is almost like new…. hardly any signs of age” Link

Built by Moog and retailed by Realistic (Radio Shack) for the home market.

Basic and easy to use, this was an inexpensive way for novice musicians to get the Moog sound.

This unit has a serial number of 15738. Cosmetically is is pretty clean but does have a few minor issues. Eight keys have old, stubborn stickers denoting the notes. Three keys have a spot of red marker near their top. The “noise” slider is missing its knob. Some tape residue on back. Velcro strips added to bottom. Ground on plug is missing. Someone has used a black magic marker near the master volume to darken the words “Realistic Synthesizer by Moog Music”

This is a recent estate find and has been in storage for some time. All keys, dials, levers and slider knobs are in working condition however there is a bit of lag sometimes. You might need to move a lever back and forth or press a key a few times before it makes contact. This only happened a few times during the hour or so i was testing it so I assume it just needs to be cleaned inside, I’ve not opened up to look. I didn’t have the means to test the auxiliary input or interface ports on back.

SUMMARY

In working order but should be serviced for optimal performance.” Link

It plays perfectly. All keys are fully intact and none are cracked or loose. All knobs are in great working order. All slides work smoothly except the rate slide it moves a little stiff compared to all the other slides but it works fine. I don’t know if it was always stiff or not. I just can’t remember. For the specs on this MG-1 see below for some info I lifted from Wikipedia. There are 6 great videos on Youtube on what the MG-1 can do and how to get the most out it. The videos are by Automatic Gainsay. The Realistic(moog) MG-1. ” Link

Work done

Complete strip down
All pcbs cleaned and solder joints check and re-worked where required
All switches cleaned and flushed with Deoxit D5 contact cleaner
Every slide pot removed from pcb, completely striped down, all dirt and old grease removed, treated and cleaned with Deoxit F5, new Caig fader grease on all moving parts
Keyboard removed, washed out, contacts checked and all cleaned with Deoxit contact cleaner
Full factory spec tune of poly and 2 osc sections, tune & scale set

Condition is almost like new…. hardly any signs of age or use and all slider caps fitted” Link

This synth was bought when I lived back in Michigan, from a student whose uncle gave it to him. His uncle bought it new and used as it was designed, by looping it through a home hi-fi to play along with your favorite records. Anyway, its in pretty good shape. I have had it for a few years, it has left my room only a few times, one to move. I bought a really nice photo equipment case which fits it perfectly. It seems made for it. Perfecto! It is 30 years old, so its not totally Super mint. A few loose slider caps, but has all of them… a few slight blemishes. you can see the only real one in the macro image above. Playability wise, the keys are in great shape. So smooth. The sound is awesome out of it. There is a reason people love these little guys. Other than a few very slightly dusty sliders (im sure you could clean them. never looked it up before, its that little.) Ive never noticed any other things other than a very, very slight hiss sometimes when the keys are being used. I have no idea what it is. Its never once bothered me on using it on many personal recordings.

There are some really cool mods out there that make this thing incredible. Ive heard people say that it makes it one of the cooler little guys ever made. I was thinking about doing them, but need the money.” Link

Had this synth for 4 years and never had problem w/ it. the wood paneling may be a little worn and the pots may be a little dirty, but otherwise, this is a solid, well-maintained synthesizer w/ also a working string setting, which can be a little hard to find when looking for an opus 3. very clean with very few scratches, cosmetically extremely pleasant looking with very little wear and tear, aside from the wood panels which you can see in the pictures. even those arent that bad. priced to sell and as it is analog and vintage sold as is. i’m certain you will be happy with your purchase.

comes with the flight case i bought for it…an added plus.” Link

This is used but is in good condition

This has some scratches and dust but works 100%

included is just the Synthesizer, no box or manual” Link

classic synth replaced the knobs as old ones where lost over the years ” Link

The serial number is 1610 and as you can see below, it is handwritten and I remember buying it when these first came out brand new as I bought this about as fast as Radio Shack offered it as I was one who basically grew up in a Radio Shack store. I remember eagerly anticipating the arrival of these as I knew about these long before they actually hit the stores at the time!” Link

Cosmetically it does have a few small blemishes, but nothing that affects its playability or sound. The front panel (overlay only) has a couple of hairline-sized crack marks on it running vertically. However as the panel on which this is fixed (as with the rest of the synth casing) is machined from a heavy steel, this in no way compromises rigidity of the unit. There is one light vertical scuff mark on the paint on the back panel near the connector sockets. Also, whilst all keys are intact and properly aligned, the black keys have some light scuff marks, and two of the black keys and four of the white keys have marks where some small drops of solvent or corrosive liquid have dropped onto them. These marks range in size from about 4mm diameter, to about 20mm in length (see picture of the largest), and although can be felt as a rough patch by finger tips, are the same colour as the keys and are therefore barely visible when playing a normal distance away from the keyboard.

The serial number of the synth is 4686 and it comes complete with a user manual copy.” Link

This unit works perfectly. All functions work. Sound manual included.

There is a little wear on the first 3 keys, but nothing very noticeable.

Sold as is!” Link

All sliders and pots are clean and slide almost like new. All the caps are present.

These do vary in price, but I really feel this MG1 is above average in show and function.” Link

Faceplate, knobs and caps all look great, item has been well cared for.

Pictures are of actual item.” Link

I just powered it up and everything seems to be working. Some of the sliders move more easily than others, but they all work. However, due to age, this is sold as-is.

Cosmetically, the synth is in good shape (considering age), but there are a couple of things to note. 1 slider cap is missing. The upper right corner of the front panel is slightly chipped. The sides have places where duct tape has been. This can be seen in the 4th picture. It’s not sticky, but you can see it.

I am also including a custom made fabric dust cover.” Link

Works OK, I went through the setup/check sequence in the owner’s manual I found online, and everything is kosher EXCEPT the “Bell” feature is apparently dead — even after my cleaning and touching-up a couple of dead-looking traces under the slider pot on the ‘board (I thought I was able to hear a faint enhanced chime when the Bell slider was maxed, but there was no stand-alone bell or ring modulated tone whatsoever). Perhaps this is not a crucial feature anyway, as there are a bunch of VERY NICE sounds here! With a little familiarizing, even a techno-dweeb like me can work this synth and get some fun and useful tones — I was able to approximate a ringtone I’ve had in my head for years, and this machine made it come to life a — a pretty convincing cranking engine sound which gradually slowed to a grinding dead battery sound. Of course all the requisite musical tones are here too, this is definitely a classic Old School synthesizer tone machine… ” Link

This beauty has been part of my life for 25 years, fully working, fully playable and fully analogue

I have just had the MG-1 professionally / lovingly serviced and restored by ‘The Synth Professor’ see link to their website http://www.synthprof.com/index.html
who have done an absolutely fantastic job getting this baby back to it’s best, including;

Removal of the ‘killer foam’ and replaced by new felt and foam that will outlast me and you
Tuned and calibrated
Fully cleaned inside and out
New slider knobs
The service from ‘The Synth Professor’ comes with a three month warranty and I will pass this on to the winner

The best part of course is the sound, and this is what makes the MG-1 so special, blast your speakers with a Moog Bass, shatter your neighbours windows with a searing Lead, create those unique sound effects, the MG-1 has it all.
I will be very sorry to part with the synth, however I do not get the time to play anymore so it needs a good home !

Comes with power cord and printed manual” Link

missing a couple slider caps, does not affect functionality and can easily be replaced (reproduction caps available right here on eBay)

This MG-1 is from my personal collection, the tar-foam that plagues these units has been completely cleaned out, it has been used gently in a smoke-free, private studio, covered to prevent dust intrusion while not in use, and works beautifully. I finally cracked and picked up a voyager XL and don’t want to see an amazing synth like this in storage instead of being used by someone who knows how wonderful they are, so sadly I’m letting this one go to good hands who are looking for that classic Moog sound.

It’s got all the features you could want in a classic monosynth

Sample cd’s will never compare to the real thing!

These things are getting harder and harder to find in perfect working condition, don’t miss your chance to own a classic piece of analog synth history, from the godfather of synthesizers himself Bob Moog!” Link

Cosmetically, it looks to be in good condition. No missing slider caps. Some light scratches and marks to the keys, knobs, and unit. I didn’t find any major flaws. Take a look at the pictures.

I’m far from an expert when it comes to old analog synths, so I can’t say for sure that all features are functioning properly. But it seems to work well. Everything sounds good to me. All the controls, sliders, and knobs seem to be in working order. There doesn’t appear to be any connection trouble. I couldn’t find any problems, but my knowledge is limited. So please ask questions!

I don’t know what the inside looks like since I’m smart enough to realize I shouldn’t mess with it. It could probably use a cleaning. I’ve had it for six years or so and took very good care of it, but I don’t know what it went through prior to that.” Link