Tandy Orchestra-90 Stereo Music Synthesizer

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Three videos of the Tandy Orchestra-90 Stereo Music Synthesizer. The Orchestra-90 was featured on the site once before in this listing from 2013. This is the first post to feature demos and a look inside. I found them after seeing the new listing below.

Playlist:
Orchestra-90 Stereo Music Synthesizer
CoCoTracker - Orchestra-90 - 6309
Orch 90 repro plays 99 Luftballons on the TRS-80 Model 4

via this listing

"Introducing the Tandy Computer Products The Orchestra-90 Stereo Music Synthesizer! This high-quality music synthesizer is perfect for both amateur and professional musicians alike. With its advanced technology and user-friendly interface, this synthesizer is sure to take your music to the next level.

Featuring a sleek design and top-of-the-line features, this Tandy synthesizer is a must-have for any music enthusiast. Whether you're looking to create your own unique sound or simply want to enhance your current music projects, the Orchestra-90 is the perfect tool for the job. With its exceptional sound quality and versatile capabilities, this synthesizer is a true game-changer in the world of music."

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ARP 2600 Black/Orange

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via this listing

Pic of the inside below.

"ARP 2600 with 3620 Keyboard. Clean and in as close to mint condition as one could get. Includes covers. The AC inlet was modified to accept standard 3 prong removable cable. Repaired VCO2 and VCO2 Sub Board. Clean sliders, connectors and switches. Solder broken wire at reverb input tank which had fallen off. Calibrate and tune. Burn-in and functional test. Stays in tune. Ships to the lower 48 states only. Local Pickup available."

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Assembling Grp A4 2024 Series

video upload by Grp Synthesizer

"The Grp A4 Synthesizer 2024 Series production goes on, and on, and on, and on..."

LinnStrument Disassembly 2024

video upload by Roger Linn

"Roger Linn demonstrates how to disassemble and reassemble and LinnStrument in order for owners to perform parts replacement or repairs at home without sending it away."

Roland Jupiter 4 early rarest version (w BA662 filters) + flight case (SERVICED) SN 902159

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via this listing

"This is the rarest early version with x4 BA662 filters for each voice

with more punchy and fat sound...(despite the latest versions which have only 1 IR3109 filter chip for voice)"

Pics of the inside below.

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A Tour of The Farfisa Super Synthaccordion

video upload by Chicago Electric Piano

"Our Combo Organ Tech Keegan "Krazy Keegan" Meuris walks us through the unique and vast features of Farfisa's most advanced Combo Organ/Accordion ever built, the Farfisa Super Synthaccordion.

You'll see features, hear sounds, and learn history about the Super Synthaccordion in this comprehensive overview of Farfisa's finest Accordion related creation ever to be built."

The Venerable Moog Memorymoog - Inspiration for the Moog Muse?

video upload by Vintage Synthesizer Solutions

"Please join us while we explore the infamous, but actually quite venerable Moog Memorymoog synthesizer. As is widely recognized, the Memorymoog was developed too late and was rushed to the market. By 1982/83, the era of extremely expensive flagship analog polysynths being ubiquitously adopted by professional musicians and studios was coming to an end. Synths like the Sequential Prophet 5, Oberheim OB-X/Xa, & Roland Jupiter 8 had dominated the market, but new digital technology - both in synthesis and sampling, was quickly gaining a substantial foothold in the music industry. The Memorymoog was notorious for reliability issues right out of the box while innovative instruments like the Yamaha DX7 were cheaper, much more reliable, and had a unique new sound.

In hindsight and considering the analog renaissance we've expereinced of late, one can evaluate the Memorymoog from a different and more forgiving perspective... It sounds absolutely fantastic and offeres an incredibly unique & fat tone relative to competetive products of both its era and modern times. Additionally, once a competent technician has sorted common issues with the power supply/fan, connectors, etc. the instrument can be quite reliable from a functionality and tuning standpoint.

The audio is DIRECT, with a just a touch of OTO Bam reverb added on an aux bus - You are hearing the raw audio as it comes directly from the synthesizer. There is NO EQ, Dynamics, etc. Listen on good headphones or monitors!

Thank you so much for watching! This channel is a passion project. These videos are recorded off the cuff. We are just two hobbyists who share a deep passion for synthesizers."

JCS BN-1 "Bakery of Noise" Digital PCM Synthesizer – One of a Kind

Note: Auction links are affiliate links for which the site may be compensated. "JCS BN-1" 4-Bit Linear PCM Synthesizer - Part 1 (Prototype)

video upload by blarrer20

"JCS BN-1" 4-Bit Linear PCM Synthesizer - Part 2 (Finished)

video upload by blarrer20

"This video demonstrates the final version of a 4-bit Linear PCM synthesizer that I have designed and built over about two months. It makes use of mostly Soviet clones of 7400 and 74LS series TTL chips, with no microcontrollers involved. It has a 256 x 4 SRAM chip that allows the user to program whatever waveforms may be desired, with looping capability, and starting at whatever point desired. Most importantly, it is able to be controlled by an external source, for example a keyboard instrument. It also has a frequency doubler circuit. This video is part 2 of 2, showing the finished product.

If you want to skip right to the sounds, go to 27:08"

via this listing

Pics of the inside below.

Details from the listing:

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1983 Sequential Circuits SIX-TRAK 610 Synthesizer

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

via this listing

Pics of the inside below.

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Oberheim Matrix 12 61-Key 12-Voice Synthesizer

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

via this listing

Pics of the inside below.

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Moog Model D Minimoog V5 SN 10956 w/ Case

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via this auction, also on Reverb

Two pics of the inside below.

"1977 Moog Model D Minimoog - Classic Analog Mono Synthesizer V5 with Road Case

The 1977 Moog Model D Minimoog is a true gem, embodying the essence of a classic analog mono synthesizer. Encased in a road case for added protection, this vintage beauty from Buffalo NY Moog stands out as an exemplar of analog power, unmatched by modern reissues and plug-in emulations. For aficionados and true synth enthusiasts, the 1970s-era Model Ds hold a revered status as the authentic deal.

Each Model D from this era is a unique masterpiece, radiating its distinctive warmth and character. In our studio, where we had many Model Ds come through our doors, no two sound alike. These vintage treasures deliver a deep, heavy, and punchy bass that is unparalleled, making them a must-have in the arsenal of any electronic music creator. However, their versatility extends beyond electronic genres, offering creative possibilities such as plugging in a guitar to craft tones with vintage filter points that defy the limitations of pedals or amps.

The Model D is a timeless classic that transcends the ages, and this particular Moog holds special significance. It boasts a single owner and has been professionally maintained, recently tuned and calibrated for optimal performance. Notably, this synthesizer features an extended tuning range, highlighted by the three additional ports on the back, showcasing the latest and most stable version of the vintage Minimoog Model D oscillator board available for sale.

While it exhibits minor cosmetic wear, this Model D functions flawlessly and is poised to serve its next owner for many years to come. The sale includes a padded Hybrid road case, offering both protection during travel and secure storage for this exceptional instrument."

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What Is All That Stuff Inside A Polymoog (by synthpro)

video upload by synthpro

"This is a video I felt it was time to make going over the polymoog more in depth technically to go hand in hand with @AlexBallMusic's post on the Polymoog synthesizer."

See Alex Ball's Polymoog video here: That Gary Numan Synth. Update:

Dillan's Polymoog 203a Demo (by synthpro)



SN 1244

Inside Sequential: A Synth Lover's Dream Tour

video upload by Doctor Mix

"Join me on a journey to the heart of analog synthesizer craftsmanship at Sequential, creators of the Prophet 5 and more. Featuring a surprise visit by Mr. Tom Oberheim and a tour of their high-tech factory, this episode is a dream for every synth lover! 🚀 Discover the amazing synthesizers range by Sequential! Click here 👉 https://sequential.com/"

Paia Oz Vintage Poly Synth Rare VGC Working

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via this auction

Pics of the inside below.

PAIA Oz synth from the 70s. It’s a cool, portable, battery powered synth organ with full sized keys, 5 octave selectable, trigger out, built in speaker and apparently used by DEVO. I soldered in a new battery holder as the old one looked flimsy and wasn’t making good contact. The ribbon controller is working but it’s more a gimmick and not a true pitch bender. All keys function and all functions work except I haven’t tested the trigger outs. This unit is pretty clean inside and out but it is a vintage DIY synth that’s rare so I’m selling as is and as described. Awesome piece to display in your collection and totally playable. I would imagine that adding a nine volt power supply would be extremely easy as well as adding an audio line out. This kind of begs to be modified into something more but I never got around to it."

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Rare Tiracon 6V Polysynth | Basic tune and a look inside

video upload by Mindburner

"This video fatures the Tiracon 6V polysynth for around 1987. It was made in Communist East Germany. It is one of the last and very rare analogue synthesizer models produced in German Democratic Republic before German reunion."

EMS VCS3 The Putney Analog Modular Synthesizer w/ DK 1 Keyboard SN 1098 & 2118

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

via this auction

"This listing is for an EMS VCS3 The Putney Analog Modular Synthesizer w/ Original DK 1 Keyboard. Important to note about this synth, it does not have master tune knob like many synths made after. There are three parameters the user needs to juggle to property tune this synth. The first is the frequency knob of the oscillators, 2nd is "Input Channel 1" knob and finally, the "Frequency" knob on the DK1 keyboard. Even with everything dialed in nicely, sometimes the higher or lower notes on the keyboard will be slightly out of tune. Adding or removing patch pins will raise or lower the voltages for all three of these parameters and will throw the synth out of tune. This is a historic synthesizer without the "quality of life" upgrades of analog synthesizers made after."

Original DK . 1 Keyboard w/8-pin Cable
New 3-pin Power Supply
Original 3-pin Power Supply

SERVICE DONE:

VCS3:
- All new electrolytic and tantalum capacitors (including PSU)
- All new 5w resistors
- Rebuilt power supply section with new voltage regulators, diodes and transistors
- Replaced envelope lamp with LED
- New grounded power cable
- Cleaned card edges and card edge connectors
- Full calibration to factory specs

DK1:
- All new electrolytic capacitors
- Full calibration to factory specs
UNPACKAGED WEIGHT: 30.15 lbs.

UNPACKAGED DIMENSIONS: 30" x 20" x 18"

Pics of the inside below.

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Studio Electronics MIDIMOOG w/ Original MiniMoog OSC Board SN 1123

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

via this auction

Pics of the inside below.

"Original model MidiMoog.. Not very many of these made. This was one of SE's first builds. These few MidiMoog's had an original vintage Moog MiniMoog OSC board.. this is one of those.

It all works great.. Thesis Audio completely went through it a couple of years ago.. It is working and sounding great.. just like a vintage minimoog!

In many ways its better than a vintage minimoog.. it has MIDI, it has LFO and Filter Aftertouch!!! And is very portable.. all with the Mini sound.

A couple of things to note. There are scuffs and scratches around the body, The first WAVEFORM knob is a little loose from its post.. NOT THE POT.. just the plastic knob over the metal pot post.. needs a new set screw. And.. while its perfectly scaled and in tune across many octaves.. you may have to scale and tune it after transit.. takes 5-10 min and super easy.. tuning / scaling pots are accessed via the back panel with a mini flat head screwdriver. Might not need tuning when you get it, just stating for full disclosure."

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Oberheim OB-1 Demo/For Sale (by synthpro)

Note: Auction links are affiliate links for which the site may be compensated.
video upload by synthpro

"Hey Guys, In this video, I go over a very cool little Oberheim OB-1 I have been working on between all my other projects. As you can see in this video, its a great playing little synth once more after being dead for many years.

This particular synth belongs to David Ewing who played with Brenda Lee for 30+ years so this synth also has some awesome history behind it.

Here is a link to Tauntek's page on the OB-1 for those interested or struggling with your own repairs: http://www.tauntek.com/OB1.htm

here is the link to the listing:
https://reverb.com/item/80072356-ober..."

Kawai SX-240 SN 8748 w/ Original Box & Cassettes

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via this auction

"- 1985 Kawai SX-240 8-Voice Analog Synthesizer Keyboard

- This Exceptional Example, Serial Number K8748, Remains in Near Mint All Original Condition and Includes the Original Shipping Box and Sealed SX-240 Cassette!

- Somewhat of a Sleeper, the SX-240 is a Dynamic, Rich, and Superb Sounding Analog Synth

- Intuitive, Easy to Use, and a Viable Alternative to Many Mid-80’s Analog Keyboards, the SX-240 is One of Japan’s Best Synths"

Pics of the inside below.

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Moog Polymoog Repair - Dead/Incorrect Sounding Keys - Synthchaser #162

video upload by Synthchaser

"In this video I show how to repair the 2 most common causes of a very frequent Polymoog problem--dead or incorrect sounding keys."