ABOUT US:

If you're into vintage gear, you've probably seen our website before.
We've been buying, refurbishing & selling vintage synths and electronic musical instruments for 30 years. We're perfectionists and take our business, our gear, and our customers very seriously, so buy with full confidence - we won't let you down.

Our prices here may seem high, but we are a legitimate business with real business expenses, not your typical amateur seller disguised as a Reverb store. Please click on our user name to read more about our shop so you better understand our high standards and prices. You get what you pay for.

Reverb and merchant fees are high and have been factored into our prices here.

ITEM DETAILS:

We paid our tech to fully overhaul and future-proof this unit so it would not only work like new for its next owner but to also hopefully extend its life way beyond others you may find. The following work was done, sparing no expense, and the resulting instrument is better than all others of its kind and is of course priced higher than the others to reflect the work we did to ours that other sellers didn't do to theirs. Ours should tune better too. You get what you pay for. 

Disassembled and cleaned inside and out.
Dip switches replaced.
Power switch replaced.
Cleaned all pots. 
Voice mother board.
Replaced molex terminals in power section. 
Resoldered connector pins.
Replaced autotune resistors for more precision. 
Replaced VCO range trims, scaling trims.
Replaced power supply electrolytic capacitors, trimpots.
Replaced 4051s x6.
Replaced gate IC59 (4099 x1).
Adjusted power supply voltage.
Voice cards: Replaced resistors for precision tuning, trimpots, electrolytic caps.
Recalibrated VCOs, VCFs.
Replaced pitch bend and mod wheel lever pots.
Cleaned jacks.
Removed and cleaned all keys, cleaned keyboard chassis.
Removed old bushings, adjusted metal guides, replaced with new bushings.
Cleaned J-wires.
Cleaned and lubed bus bars.
Extended burn in test and several systematic tests to ensure reliability. 
See video below! 

This represents a rare opportunity to buy an OB-SX that works perfectly, tunes better than others, and will hopefully keep working perfectly long into the future. We wouldn't sell it if we didn't have another just like it in our studio collection.

For years, we avoided buying this vintage analog polysynth because it was preset-only. However, someone recently created a MIDI retrofit (not included) that plugs into the communication port on the back of it that also allows for full editing of all parameters via MIDI CC data, bringing this synth up to the legendary level of the OBX, OBXa and OB8! To us, it sounds like a cross between an OBXa and OB8, plus it's got the benefit of being smaller and lighter. Even without this retrofit, it's a great synth with knobs for some very important parameters on the front panel so you can make adjustments to customize the preset sounds. 

GENERAL TERMS:

-Please read our store shipping policy & terms before buying. They are firm.

-International customers please contact us before buying and wait to hear back to make sure shipping quote is accurate.

-***WE NEED APPROXIMATELY 1-2 WEEKS TO PACK AND SHIP ITEMS, AND DELAYS CAN OCCUR. Please don't message us to ask if your item shipped. We will let you know once it ships. If you can’t wait patiently, please don’t buy from us as we can’t rush things.***

-We are an online-only store and are unable to offer local pickups.

-Quality control and customer satisfaction are our top priorities. We go to great lengths to test, service and even future-proof most of the items we sell so they’re better than others you may find. We test most items multiple times and overlook nothing. When items are not working perfectly, they are accurately described. Physical imperfections can be seen in the detailed photos present here. This sale includes only what's shown in the photos (or itemized in this listing), nothing more and nothing less. Please search our website for additional photos.

-All sales are final. We do not accept returns or issue refunds, so please be sure you know you want this item before buying it.

-Due to the vintage and electronic nature of our items, we sell all items strictly as is, only because we cannot control what other people do to our items once they leave here, we cannot offer warranties on parts that are decades out of their original warranties, and we don’t want to be scammed or inconvenienced by people who abuse return policies or have buyer's remorse.

-In the extremely unlikely event that there’s a problem with an item we sell you, please contact us immediately so we can try to help.

-Thank you so much for your time, interest, and support. We look forward to doing business with you! If you need anything, please don’t hesitate to ask.

-Any date of manufacture shown here is just a guess.

-We generally set our condition ratings to "excellent", but please refer to the photos and writeup so you can have a better understanding of this items condition.