Your New Favorite Synth Dealer

After years of great success in the vintage synth restoration business, Rosen Sound is proud to now offer quality synthesizers for sale to the public under the moniker of Rob’s Rare Synths. Alongside dealing in goods, we’re also able to buy your gear whether it’s one piece of gear or an entire collection. 

What’s So Rare?

Simple! Our gear works, actually has the work described performed, and comes with the most killer warranty in the biz. Additionally, you will not deal with unscrupulous characters, and you will have direct contact with the business owner who communicates using his real legal name. Can you imagine wiring thousands of dollars to someone operating under a pseudonym? We can’t either, and we’re here to change the game.

What’s For Sale?

Everything we have available for purchase or pre-order is listed below. We update the list when possible and also add SOLD to the listing as soon as something sells. 

Check out our Reverb store as well but we have recently seized listing most things there as this webpage has been a better source of sales for us. 

Most of our synths listed below are restored-to-order, however have already had preliminary servicing done to them so we can offer them for sale. This means they’ve been gone through to ensure they can be completed in the lead times provided below and be considered fully restored instruments worthy of their price and our lifetime warranty.

Stock List:
Updated 08/01/2020

ARP 2600 W/ Monophonic Keyboard – Grey Face with 4012 Filter. Unit fully restored inside and out. Houses in brand new wood cabinet with original style tolex. Minty minty. 4-6 week lead time. $12,000. $8000 deposit to secure.
ARP Solina String Ensemble – Unit will be in new walnut case, otherwise in average condition as these usually all have their writing rubbed off etc. All offers considered. Great candidate for extreme restoration which we can do for you. 
ARP Axxe – Unit in okay shape. Prime piece for modding it to your liking. $1500 and 90% of that will be donated to a Black Lives Matter associated charity/fund. 3-4 week lead time.
Crumar Performer – Condition is good. $1000. 3 week lead time, $500 deposit to secure
EML-101 – Early unit. Has brand new power supply inside. Awesome unit in great shape. $4500. Ready to go.
Moog Memorymoog Plus – Unit has been totally rebuilt by owner including all new connectors, pin headers, knobs, capacitors, resistors. As new as new can be. Includes accessories including Moog Song Maker, Pedals, original documentations and more. This is one for the collectors out there. It doesn’t get better than this one. $15,000. Must be paid in full. Short lead time to prep for shipping.
Moog Memorymoog Plus – Consignment, no offers accepted. Unit is a stock Memorymoog converted to plus. Can add DBM at no extra cost. Great condition unit! – $10,000
Moog 1973 MiniMoog #1 – Near mint shape. Fully recapped and restored. Old oscillator card (3046 type). Cream pitch and mod wheels. My favorite era of Mini’s, to be honest. Really a great specimen. $8250 stock and $8500 with midi. 
Moog 1974 Minimoog #2 – Inquire
Oberheim Matrix-12 – Unit in nice shape and has the individual outputs installed on the left wood panel. $12,000. Ready to go.
Oberheim OB-8 – Later model with page 2 graphics and back-mounted midi. Decent shape. $6000. Ready to go.
Oberheim OB-X #1 – 8 voices w/ Encore Midi. Cosmetic shape is “good”. Has new walnut sides. $11,500. $8000 deposit to secure.
Oberheim OB-X #2 – 8 voices w/ Encore midi. Cosmetic shape is great! Great condition original sides. $12,500. Ready to go.
Oberheim Xpander – Good condition. $5000. Ready to go.
Roland Juno-6 – Unit is in *mint* condition. Has Juno-66 midi kit from Tubbutec installed. Ready to go! $3000
Roland Jupiter-8 – 12 bit w/ Encore Midi. Decent Cosmetic shape – $15,500. Ready to go.
Sequential Circuits Prophet 5 Rev 1 – This is a cool and good condition Rev 1 owned by a client of ours who has asked us to help sell it. It worked when it got here and only needed minor and basic services to get up to par. 2-4 week lead time to make sure it’s good to ship. $11,000. $9000 deposit to secure.
Sequential Circuits Prophet 600 – Unit is in “good” shape and will have new wood sides added. Will also have GLIGLI and quiet transformer installed. $1950 with 2 week lead time, but must be paid in full.
Yamaha CS-50 – Works fantastic and in fantastic cosmetic shape sans a small engraving done by original owners. Great example of an awesome synth. Comes with original lid, legs, and music stand. $6500. 1 week prep time to ship.
Yamaha CS-60 – Works Fantastic. Great condition. Has all new CMOS (no affect on sound, only reliability). $9250


Below is our B-Stock list. Through our years, we’ve collected some pieces we cannot offer for full value because of strictly cosmetic defects. This means they operate as good as the pieces in our normal stock list, but may have above minor to notable cosmetic defects. These pieces are great for those who want the vintage sound without paying the premiums we are known for. The same warranty applies to these of course.

Octave Cat – Non SRM. Scratched up. 3-4 week lead time. $1200. Must be paid in full to reserve

Recently Sold

Below are things that have had many offers and interest, and therefor should be be publicly listed as “SOLD” until the next months update cycle. Don’t wait next time!

Moog MemoryMoog + MiniMoog Combo – Both housed in custom matching Zebra Wood cabinets. $18,500. Ready to go. SOLD
Oberheim Four Voice FVS-1 –
Unit is in excellent shape cosmetically. Will be undergoing full restore including all new CMOS chips on the programmer and poly keyboard assigner, a full recap and the general rebuild we are known for on these units. Midi will be added via YARNS module internalized which will add some MPE compatibility. These usually go quick from us, so if you’re in the market, get in touch sooner than later! Lead time is 2-8 weeks. $20,000. $15,000 deposit to reserve if paying full price. All offers considered, but must be paid in full to reserve. SOLD
Oberheim Matrix 12 – Ready as of 4/15/20. Looks alright all things considered. Brand new wood sides. Fully working electronically, but surely a b-stock piece. Usually we’d want 12k, but with the cosmetic issues we’d like $7500. SOLD
Yamaha CS-80 – We have a CS-80 that we would consider selling. $25,000 with a $15,000 deposit to secure SOLD


We go absolutely nuts restoring our synths. For most machines, they’re completely stripped down and cleaned out. Following that, each board is inspected and failing or problematic components are replaced for maximum reliability without any detriment to the sound of the unit. Our years of experience restoring these machines has bestowed us the knowledge to know what fails the most, from certain capacitors and resistors, to CMOS and op amps, etc. With that said, we guarantee the synthesizer to be free from work related defects for as long as you own the machine. Not just for 30 days or 3 months like other dealers. If you own it, you’re covered.

Whats not covered is negligence, accidents, and problems related to aging. This is vague, and unfortunately there is no way to draw a hard line on what qualifies as age related and work related issues. This grey area is where we excel in customer service. We stress that this is why it’s important to deal with honest and reasonable people, which we are. We can’t predict the future, and neither can you. Science says even brand new components can fail suddenly. If this is the case for your purchase, we’re happy to help you. If it was something we may have missed, there’s no charge. If it’s something age related or what we call “random acts of science”, you’ll also still be helped, potentially just for the cost of the part, assuming that part doesn’t cost $0.50 like most parts inside synthesizers. 

Want To Sell Us Your Gear?

RRS is well financed to purchase one synth or an entire collection of them. The selling process is simple. Let us know what you have and we will put together a personalized offer for you.

No, we’re not interested in paying full price for the synth you just got fixed somewhere else. 


Gear we’re always looking for (dead or alive, but hopefully dead!):
ARP 2600 (any rev)
ARP 2500 
ELKA Synthex
Moog Minimoog
Moog MemoryMoog
Moog Modular
Oberheim OB-X
Oberheim OB-Xa
Oberheim OB-8
Oberheim Two Voice, Four Voice / Eight Voice or any SEM System
Roland Jupiter 4 
Roland Jupiter 8
Sequential Circuits Prophet 5 (any rev)
Sequential Circuits Prophet 10 
Yamaha CS-50 CS-60 CS-80


Due to the COVID-19 Pandemic, our shipments may be marginally delayed depending on the type of shipping available. We are -not- going to any traditional shipping offices in person to drop off packages. We rely on the near-daily drop offs we get to our shop so we can simply send packages out with the drivers. If you use our air-cargo option, there is no delay however please note your local air cargo office may have earlier closing times/closed on weekends due to the pandemic.

We ship using a few different methods. Our preferred method is via air cargo which is strikingly inexpensive and arrives to you the same or next day, and allows the buyer to pay for the shipping charges instead of it being middle-man’d through us. We stress that the cost of shipping same/next day via this method is exceptionally safer due to the shorter handling times, and surprisingly cost much much less than traditional shipping… and you get your synth faster!

We also will ship UPS if going to the airport is not an option or you prefer it. We know everyone has their opinion on UPS/FEDEX, so we should note that we are UPS people. They haven’t done us wrong. 

Want it to ship in a brand new hard case? We work with an awesome local flight case maker who’s been in the biz forever. The prices are reasonable and he has measurements for the most common gear we sell. A new hard case will run $2-600 generally and be ready within a week or two. Note that this service is only offered to those who are purchasing gear from us or repair clients.