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Sequential Circuits MAX Project Machine

“Vintage Sequential synthesizer, for parts or repair. Unit has not been tested due to missing power supply. Please take note of the numerous missing buttons and corrosion throughout the unit. Dent under main headphone jack on rear. All of the keys feel good with full movement. No other apparent missing or damaged parts. No returns. Please refer to the photos for a further evaluation of condition.” Click here to visit listing on eBay

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Sequential Circuits MAX

“Up for auction is this AS IS – NOT WORKING Sequential Circuits MAX MIDI Voice Expander

This unit is being sold in “AS IS” and “ALL SALES FINAL” condition.

The unit is in very good cosmetic condition. There are no internal sounds and the recorder does not work. May be used for MIDI use only. Power supply NOT included.

Please note: There may be additional items missing, broke, or that may need repair. ” Click here to visit listing on eBay

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Sequential Circuits MAX

“1984 sequential max analog synth. 49 key. VINTAGE! Super clean!!! Incredible and unique synth. All original including manuals and power cord. Super clean!!!” Click here to visit listing on eBay

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Sequential Circuits MAX

“sequential circuits MAX. Analog lush !!

Works perfect, includes original power supply. Has a decal with midi functions. Looks and sounds awesome. ”
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Sequential Circuits MAX

“Up for sale is a our Sequential MAX polysynth.

Its been tested and is working as it should be.

Cosmetically is very good overall. There are marks and blemishes to the outer case.

Included as part of the sale is the separate power supply for the synth.” Click here to visit listing on eBay

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Sequential Circuits MAX

“Up for sale is a our Sequential MAX polysynth.

Its been tested and is working as it should be.

Cosmetically is very good overall. There are marks and blemishes to the outer case.

Included as part of the sale is the separate power supply for the synth.” Click here to visit listing on eBay

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Sequential Circuits MAX

“Up for sale is a our Sequential MAX polysynth.

Its been tested and is working as it should be.

Cosmetically is very good overall. There are marks and blemishes to the outer case.

Included as part of the sale is the separate power supply for the synth.” Click here to visit listing on eBay

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Sequential Circuits MAX Project Machine

“Sequential Circuits Max Synth project. Condition is “For parts or not working”.

Rare keyboard. In good physical condition. Missing 1 button on the sequencer and the start button might need some attention. Doesn’t power on. No idea what is wrong with it. Good for parts or repair.” Click here to search for synths on eBay

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Sequential Circuits MAX

“Good overall physical condition. Powers on. It displayes track one when powered on-I cannot get it to move to a different track, however, that may be entirely user error as I have no idea how it works…. In a moronic moment, I knocked off a key while cleaning (see pic)-The key is included. A steady hand and some super glue can likely remedy it. ” Click here to search for synths on eBay

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Sequential Circuits MAX Project Machine

“1984 Sequential Circuits Max 610 Analog Synthesizer

6 voices, 6 oscillators and 6 VCF’s

NEEDS a Midi Interface with a Computer/Tablet peripheral to operate.

INCLUDES original AC Adapter

Great Collectors Item

– TURNS ON but have NOT FULLY TESTED IT beyond this because I don’t own a midi interface
– Missing a button (decrease volume)
– Has cosmetic scratches on front and back
– Three keys are stuck and with one bent and possibly don’t work. They are the last 3 white bass keys on the left side
– Needs servicing for those keys and missing button.” Click here to search for synths on eBay

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Sequential Circuits MAX

“Vintage Sequential max synthesizer in great conditions powers on all buttons and knobs functions when pressed all lights works and when i pressed the keys all track lights lights up depending on what keys i press all keys are straight and solid i no nothing of this vintage unit dont no how to test it selling as is no returns no further testing done on it”
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Sequential Circuits MAX

“Sequential Circuits MAX Analog Synthesizer. 6 voice synth with built-in sequencer that is up to 6 parts multitimbral. Everything is in good working order, but the case on this unit has a little light rust. This has the memory upgrade from Tauntek/Bob Grieb installed. This gives you more presets, more sequencer notes, the ability to save user presets in NVRAM, and better MIDI control. This is a big improvement over the original, and it’s worth noting that this mod is no longer available. The MAX is very similar in function and sound to the 6-Trak, but without the knobs.”
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Sequential Circuits MAX Project Machine

“Up for grabs is a Sequential Circuits MAX 100% warm and fuzzy analog synthesizer.

Note: The unit turns on but does not complete the boot process and thus will need servicing. Though: It is in good/great “physical” condition for its age.

There are a few scratches on it.

It is similar to the Sequential Six-Track and Multitrack. The sounds are pretty big and amazing. Think prophet.

The MAX was designed as an alternative to more expensive Sequential models. The sound quality wasn’t sacrificed but they cut out some of the controls to save on construction costs. It only has a few onboard controls for modifying sounds. It does have 80 stock presets (most of them are great as-is) and there are 20 user patches.

If you want to dive in and modify the sounds it’s really not that difficult. All of the sounds can easily be controlled by an external MIDI CC controller. I use the Arturia Beat Step Pro (not included). It allows me to control the sounds quickly. I will include a printed copy of the manual and MIDI instructions.” Click here to search for synths on eBay 

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Sequential Circuits MAX

“This Synth has been modified with the addition of the following features:

• 100 sounds, all downloadable, located in battery-backed RAM

• Note storage increased from about 500 to about 3200

• Unison mode added.

• Three sets of 100 factory sounds in EPROM: 80 Max + 20 Six track Unison factory sounds, 100 Six Track factory sounds, and 100 Multi-Trak factory sounds (without chorus or velocity sensitivity, of course)

• CC parameter changes to current program can be saved to program 99, then copied to any other program

• MIDI receive buffer increased from 64 bytes to 128 bytes

• Removed code that reduced volume of subsequent notes if CC change received while MIDI note with low velocity playing. This a code bug in the original EPROM.

These features were added by upgrading both the EPROM and the type/amount of RAM. The Max shipped with a 128K EPROM and two 2Kx8 SRAM chips. This modified Max has a 256K EPROM and a single 32Kx8 SRAM chip (only 16K is used). The modification is a small PC board which holds the EPROM and NV SRAM. This board plugs into the existing EPROM socket on the Max. Five additional wires connect from the Max main board to the new memory board. In addition, the two SRAM chips on the Max main board have been disabled. See more info by googling “Sequential Circuits MAX Mod Page – Tauntek”

INCLUDES:
-Synth
-Manual
-Power Adapter

ABOUT THE SEQUENTIAL CIRCUITS MAX:

The original NON-Modded Sequential Circuits Max was designed as a companion to the Six-Track, Multi-Trak and possibly the C64 personal computer. It relied on MIDI messages for parameter changes, having no on-board way to vary them. It came with 80 “factory sounds” in EPROM, and storage for 20 more in RAM, which could be used after downloading via MIDI. Two “songs” or sequences could be recorded and either stored in RAM or dumped to MIDI. No battery back-up was provided for RAM, so all song data and the 20 programs were lost when the unit was powered down.

Synth is in great working condition. Guaranteed to be operational. Returns accepted if Synth is not working as described.
” Click here to search for synths on eBay

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Sequential Circuits MAX

“Missing buttons for track 5 and 6 and also sound select 1 and 3, transpose and time button also missing. They are just simple rubber buttons and should be able to be replaced if you can find some. The knob for the master volume is also missing.

Some extremely light rust on the left hand side. Does not affect playback.”
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Sequential Circuits MAX

” You will not be disappointed from the big rich tones that this unassuming synth puts out. One of the original predecessors to the Dave Smith prophet, this synth has 100 presets that give off that quintessential 80’s sound with looks to boot. From funky to spooky this synth will definitely make you think of soundtrack to stranger things. it has a built sequencer that features 6 banks you can store or stack tracks in. I can’t even begin to describe how BIG of a sound it has, it gives my Roland Juno 60 a run for its money. Minor scuffs and scratches that would be common for a synth of its age. (see photos)” Click here to search for synths on eBay

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Sequential Circuits MAX

” Here we have a rare Sequential Circuits Midi Voice Expander synthesizer from 1984, made in San Jose Ca. I hooked up a pair of vintage headphones to this synthesizer and all the keys and button appear to be in working order. There are a few scratches and marks on the surface, but nothing that affects performance, please see pictures. ”
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Sequential Circuits MAX

“The SCI / Sequential Circuits MAX is a 6 voice, multitimbral VCO polysyth with a built in Sequencer, MIDI in / out and 4 octave keyboard.

Please note, this sale is for the SCI Max and a power supply only.

Everything works as it should on this MAX, including all keys, buttons, jacks and the volume control.

Please check the pictures so that you are sure of the cosmetic condition of this synth, as It has a bit of “patina.”

The SCI MAX can be programmed via software, I can email a program that I have found is useful for programming sounds with a windows computer.”
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Sequential Circuits MAX

“The SCI / Sequential Circuits MAX is a 6 voice, multitimbral VCO polysyth with a built in Sequencer, MIDI in / out and 4 octave keyboard.

Please note, this sale is for the SCI Max and a power supply only.

Everything works as it should on this MAX, including all keys, buttons, jacks and the volume control.

Please check the pictures so that you are sure of the cosmetic condition of this synth, as It has a bit of “patina.”

The SCI MAX can be programmed via software, I can email a program that I have found is useful for programming sounds with a windows computer.” Click here to search for synths on eBay

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Sequential Circuits MAX

“Sadly having to sell my Max, I love this synth but I am just not using it as much as I should. It is basically a sequential sixtrak but without the parameter editing, a preset synth with 80 presets. That being said I have been editing the sound of this synth with an app on the iPad, check the video link out for demonstration and information about the app. It’s in good working order considering its age, everything works properly, with a few scatches you can see in the photo’s. And it comes with the original power supply.” Click here to search for synths on eBay

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Sequential Circuits MAX

“Up for auction is a vintage Sequential Circuits MAX Synthesizer keyboard. This unit is working and seems to have most all functions in place and operative. I’m guessing the unit has 6-note polyphony, and it sports a rudimentary onboard sequencer – ‘Start’ button is missing, and I didn’t bother to try and test the sequencer function as I doubt it would stack up against, well, anything made after 1982. You get basically 7 banks of 10 sounds, and apparently the only way to ‘deep edit’ the sounds is via computer. (Note that by progressing further into editor mode you will be officially flirting with full-blown geekification.) I can’t even dare to guess what hoops you’d have to jump through to get a modern computer to communicate with MAX, clearly a throwback to the heady infancy of financially accessible analog synthdom. Perhaps there are generic editor programs out there…? That said, there are a handful of onboard presets that are recognizable, and I daresay that in bank 4 (40-49) there is at least one startling TB-303 soundalike. MAX appears to be responding to MIDI in Omni mode, though Poly mode is selectable. External Pitch and Mod wheels are recognized, but suspiciously, Volume is not. ‘Tune’ button is missing, but the unit sounds like it powers up at concert pitch. Back panel power jack is looking for 8 Volts AC / 800ma – I am including a 10V adapter that seems to work fine, but I would suggest being on the lookout for a proper 8V / 800ma adapter. Cosmetically, the unit is in pretty good shape, looking good for its age. I cannot test every single function on this synth, and I have tried to describe it as accurately as possible – I am selling it As-Is and As-Described.”
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Sequential Circuits MAX

“SEQUENTIAL CIRCUITS MAX synthesizer, no power supply = UNTESTED, 1 button is missing, LEFT SIDE PANEL is CRACKED – needs to be serviced.”
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