Rare Moog Modular - Burn-in Jam

video upload by Rosen Sound

"Programming and performance by Justin Goers (https://www.instagram.com/atx_cat_king/)

This Moog Modular is in our burn-in, the part of the shop where we turn on and test repaired synthesizers for five days before we return them to our clients. Justin gives it a full sonic run down and explores a range of sounds and timbres."

Roland Juno-106 61-Key Programmable Polyphonic Synthesizer SN 525338 & 474470

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

SN 525338via this Reverb listing

Additional SYNTH CITY Listings

"A high water mark for glassine pads, premier brass stabs, and surprisingly present basses, the Roland Juno 106 is well deserving of it's status as a classic synthesizer. All voices have been refurbished, this is a fully working specimen, with all sliders and pots cleaned and working wonderfully. Physically, this unit is in very clean condition with average panel wear.

Service Notes:
New set of voice chips (Rosen Sound 80017a clones)
Power supply and voice board fully calibrated
Panel board and all controls cleaned
New dust covers on panel faders
Bend assembly and controls cleaned
keys and chassis cleaned"

474470 via this Reverb listing

Service Notes:
New set of voice chips (Rosen Sound 80017a clones)
Power supply and voice board fully calibrated
Panel board and all controls cleaned
New dust covers on panel faders
New tact switches for all panel buttons
Bend assembly and controls cleaned
Bend arm and rubber stopped replaced
Jack board connectors resoldered
Standard IEC grounded AC power connector installed
Keys and chassis cleaned
replaced missing fader cap

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A Day in the Shop Ep. 11 - Rare Sennheiser Vocoder, 8-Voice Jam with Benny Bock

video upload by Rosen Sound

"Rob works on one of the rarest vocoders in the world for a super special client. Zak and Benny jam on the 8-Voice and CS-80, Benny explains some of his favorite settings on the 8-Voice. Freddie works on a Korg Trident."

E-mu + OB-X #synth

video upload by Rosen Sound

The rare EML SynKey #synth

video upload by Rosen Sound

Toto’s CS-80s: Lost & Found, restored at Rosen Sound, full demo

video upload by Rosen Sound

Oberheim Two-Voice ⚡️ #synth

video upload by Rosen Sound

Quick Repair and Tour of an Emerson Modular System

video upload by Rosen Sound

"Rob takes you on a quick tour of an Emerson Moog modular he fixed up for the Moog foundation in time for the 2026 winter NAMM."

Property of the late Gene Stopp. Also see The New Emerson Moog Modular System Is Real.

The Alan R Pearlman Foundation's Year in Review

video upload by Alan R. Pearlman Foundation

"From a Compilation to a Concert Celebration, our year celebrating our namesake's Centenary has been amazing! Share our journey!

Music by Lisa Bella Donna & Shawn Johnson

Purchase Soul of the Machine at https://alanrpearlmanfoundation.bandc...

2025 Sponsors:
Korg, Cherry Audio, Moog Music, Manny Fernandez, Tom Rhea, Rosen Sound

2025 Partners:
Bell Tone Synth Works, CMS, CatSynth TV, EMEAP/MMT, Eric Crawley/Dan Gilbert, Interage MediaWorks, Knobcon, Korg, Anthony Marinelli Music, Antonus, Mashina Bristronica, NAMM Museum of Making Music, Vito Nandi, New England Synth Fest, Projekt Records, Steve Roach, Round & Wound, the SynthCave, SynthCube, Synthtopia, Synthetic Dreamscapes, The Record Co. (TRC), Sharon Wasko Designs

Thank you to all of our donors, volunteers, interns, friends and partners including (but not limited to) Alex Ball, Antonus, David Baron, Lisa Bella Donna, Chris Cardone, Jon Carin, Alison Cassidy, Nick Carlisle, Phil & Linda Cirocco, Mike Cushing, Tom Cusimano, Eric Crawley, Stephen DeJesus, Rich Formidoni, John Foxx, Dan Gilbert, Patrick Gleason, Herbie Hancock, Martin Gore, Rupert Greenall, Ryan Hawkins, Mary Lock, Mark Marshall, Machina Bristronica, David Mash, Steve McQuarry, Bill T. Miller, LaMar Mitchell, Chris Meyer, NE Synth Festival, Nicola Joss, Ruperto Ifil, Brian Kehew, Anthony Marinelli, Tom Piggot,TRC (The Record Co). EMEAPP/MMT, Mary Lock, David Mash, Matrix Synth, Michelle Moog-Koussa, Tony Norton, Jim Michmerhuizen, Mike Metlay, C. Carl Peters, Rob Puricelli, ProSynth Network, Drew Raison, Steve Roach, Sam Rosenthal, Drew Schlesinger, Don Slepian, Steve Smith, SynthTopia, the NAMM Museum, the MiDI Association, Real World Studios, Gerson Rosenbloom, Collin Russell, James Thirlwell, Pete Townshend, the Townshend Studio, and Andrew Ward"

Roland System 100 Model 102 Expander Restored by Rosen Sound

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

via this Reverb listing

"Restored by Rosen Sound out in LA 2 yrs ago. Recapped, functionality confirmed and all circuits calibrated. Works and sounds great.

Note that I have this listed together with the 101 and 104 as well [listed here & pics captured here]. Happy to sell all 3 units together or any of the 3 separately."

CLICK FOR MORE »

Roland System 100 model 101 102 104

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

via this Reverb listing

"Sale includes all 3 units pictured. 101, 102, 104. Restored by Rosen Sound in LA 2 yrs ago. Power supplies all Recapped and all units calibrated and confirmed as working well. Only issue I know of is that the LFO shape button on the 103 is very tight and hard to change but it still works fine. I’m asking what I paid."

100 and 101 have matching serial numbers.

100 SN 592298
101 SN 592298
104 SN 490471

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How to tune a Minimoog

video upload by Rosen Sound

"Dan tuning a Minimoog #synth #electronicmusic #synthesizer"

KORG Trident MK1 Analog Synthesizer - Recently Serviced SN 330833

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

via this Reverb listing

"This is an incredibly lush vintage analog powerhouse of a synth with three distinct sections (Synth, Brass, Strings) and an insane onboard flanger.

I bought this earlier this year from Rosen Sound, who had completely serviced it. Everything is working and sounding fantastic. Internally its in 'excellent' condition externally its 'very good'

As to be expected for its age it has some cosmetic signs of wear on the wood furniture and panel but in truth it looks excellent besides these small blemishes."

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Roland Juno-106 Analog Keyboard Synthesizer (w/ Chorus Input Mod)

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

via this listing

Additional Perfect Circuit listings

Includes power cable
Serviced by Rosen Sound
Includes chorus input modification

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Erik Norlander's Korg Mono/Poly Analog Synthesizer, serviced, with case SN 378257

Note: links to listings are affiliate links for which the site may be compensated.
video upload by moogfoundation

via this Reverb listing

"Very good condition, serviced by Rosen Sound, and includes a light-duty Tuff Case for easy transport!

Cosmetic notes: small chip in wood veneer edge under keybed, and the mod wheel shows a bit of wear. Both of these issues are shown in the images.

Released in 1981, the Korg Mono/Poly is known for its four VCOs, flexible modulation options, and unique mono/polyphonic switching, making it a versatile beast for both fat unison leads and unique, syncopated arpeggios. Its cross-modulation, oscillator sync, and deep routing options open the door to wild textures and sound design experimentation.

Specs & Highlights:

4 analog VCOs with independent tuning
Mono, Poly, and Unison modes
Crossmod, oscillator sync, and flexible LFO routing
Built-in arpeggiator and chord memory
Classic Korg 24dB/octave low-pass filter
Full MIDI retrofit kits available (not included, but easily added)
Used by artists like MGMT, Chromeo, and Jimmy Edgar, the Mono/Poly is a staple of vintage synth setups and prized for its unique voice architecture and beefy tone.

This unit was serviced by Rosen Sound, a trusted name in analog synth repair, so it’s running great and ready for action. Includes a Tuff Case (light-duty) to keep it safe during travel or storage.

30% of proceeds will benefit the Bob Moog Foundation, helping inspire future synth pioneers and preserve electronic music history."

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Vintage Oberheim Two Voice

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

via this Reverb listing

"VINTAGE Oberheim Two Voice. Item was recently serviced by ROSEN SOUND in July of 2025! and is MIDI capable.

This Two Voice is a piece of synthesizer history and sounds incredible.

This Two Voice has minor Tolex wear on the left side of the synth (see attached photos)which is easily replaceable. Otherwise, this synth is in EXCELLENT physical condition and absolutely mint in performance."

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Studio Electronics Midi Mini with 1977 Mini Moog cards SN 1561

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

via this Reverb listing

"This is a great sounding synth as you can imagine.

It has MINI MOOG cards from 1977 installed also with MIDI in/thru and rack mountable ready to go.

This synthesizer has some pretty cool history.
it used to belong to the keyboardist of 'AHA' Magne Furuholmen and it has been recently serviced by Rob Rosen of 'Rosen Sound' in Los Angeles so it is tip top and works perfectly.

SOUNDS HUGE!!!!!!

Down below [previously posted here] is a cool video explaining this killer synth on all the cool added features, it has compared to the original Mini Moog."

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Inside Tom Oberheim’s Garage Workshop

video upload by Anthony Marinelli Music

See the full interview here, and the SEM Story here.

"Step inside the legendary garage workshop of Tom Oberheim—the birthplace of some of the most iconic sounds in music history. In this rare behind-the-scenes tour, Tom shares his latest creation: a custom-built computer he’s designing entirely from scratch—just because he loves the way it sounds.

Along the way, Tom opens up his treasure chest of innovations, showing us priceless prototypes from his storied career, including the original Maestro Phase Shifter prototype and circuit boards that paved the way for his groundbreaking synthesizers.

I’m joined by Rob Rosen (Rosen Sound) and Marcus Ryle (Alesis, Line 6) as we hear directly from Tom himself, walking through this sacred space filled with history, innovation, and pure sonic imagination.
👉 Don’t miss this intimate glimpse into the genius of a true pioneer."

https://oberheim.com/

https://anthonymarinellimusic.com

This Little Box Changed Synths Forever | Tom Oberheim’s SEM Story

video upload by Anthony Marinelli Music

See the full interview here.

"How did the legendary Oberheim SEM (Synthesizer Expander Module) come to life? In this video, Tom Oberheim himself tells the story of how necessity became the mother of invention.
After creating the world’s first digital sequencer, Tom needed a dedicated synthesizer voice to play back the note information generated by the sequencer. His solution was the SEM — a compact, self-contained synth voice that could be sequenced while leaving a musician’s main synthesizer free to perform alongside it. This groundbreaking idea gave players entirely new creative possibilities and laid the foundation for some of the most influential instruments in music history. Join me, along with Rob Rosen (Rosen Sound) and Marcus Ryle (Alesis, Line 6), as we hear directly from Tom about the innovation that started it all.
👉 Discover how the SEM was born and why it changed the future of synthesis."

https://oberheim.com/

https://anthonymarinellimusic.com

The Secret to the "Oberheim Sound"

video upload by Anthony Marinelli Music

See the full interview here.

"Discover the true origin of the “Oberheim Sound” in this rare and revealing conversation. Legendary synth pioneer Tom Oberheim himself explains how he dialed in his iconic tone—locking himself in a room with nothing but a bag of resistors, capacitors, and an oscilloscope. Over several days, Tom tweaked and tuned until he was satisfied, even embracing a level of filter distortion that most engineers at the time would have rejected. That bold choice became the unmistakable warmth, grit, and musicality that defined the Oberheim legacy.

He’s joined by Marcus Ryle (Alesis, Line 6) and Rob Rosen (Rosen Sound) as they dive into the legacy of Oberheim instruments—from the SEM to the OB-series—and how they shaped music for artists like Prince, Stevie Wonder, Queen, and Daft Punk.

This is the inside story of how imperfection became perfection, and how one man’s vision changed music forever. Don’t miss this exclusive conversation with three icons of synthesis history."

https://oberheim.com/

https://anthonymarinellimusic.com