Rates, Estimates, & Processing

Shop Rate: $100 per hour, one hour ($100) minimum bench fee per item. Some exceptions are made for certain very small jobs, such as battery changes in certain units. The bench charge is applied towards the final invoice. Time is billed in 15 minute increments.

Estimates: Many routine jobs can be completed in 1-3.5 hours or so. Less routine repairs can take longer. Restorations can take weeks of time. Due to the nature of vintage synthesizer repair, there is factually no way that we can know how long a unit will take to repair until it’s finished. We are not responsible if the final bill is more than the written or verbally stated rough estimate. Yes, we also wish we knew exactly how much it will cost. No, we will not work for free because your gear is stubborn. Parts are not free. Anyone who can guarantee that they know exactly how long it will take to repair eccentric issues with your gear is lying to you. 

Parts: Parts are not free. I can’t believe we have to write that. Parts are never included in our estimates unless it’s explicitly written. Repair parts (this is different from accessories) provided by customer must be approved and arranged before hand and provided with unit on drop off. In the case of retrofits and the like, it’s of course fine to provide that with your unit. We stock over 2000 parts, rare and common, and price them fairly considering we are able to test them for their authenticity. Yes, some specific integrated circuits can be quite expensive. We assure you our $80 chip will work and that the $15 one on ebay is very likely to be a fake.

Rush Fees: We are able to offer rush services on routine work that we assume will not involve days of troubleshooting. Our rush rate is $125 per hour plus a $100 surcharge added to your bill. If you would like to borrow the same or similar gear from our rental suite while you wait for your rush order, we will charge 50% of the estimate up front plus all surcharges.

3rd party billing is not an option for rush orders. A valid debit/credit card must be on file to be billed immediately.

Turnaround Times: This is probably the paragraph you skipped to. We are one of if not the busiest synthesizer shop in the USA, but that does’t mean you’re going to wait a year for your gear to get fixed. By design, we have trained certain employee’s to handle certain types of common gear/issues in order to provide what we call a Dynamic Turnaround System. This means that specific items can be handled by specific, dedicated employees within only a few weeks. If those types of repairs become more complicated, or the gear you brought in simply has eccentric issues that do not wish to be solved easily, turn around can be extended past the quoted time frame, and you will have the option to pay for and pickup your gear as-is if you so please. With all of this stated, while we desperately try to keep repairs within the time frames quoted, we do not and will not ever guarantee turn around times, ever, especially for restoration work. Please look elsewhere if you cannot accept this. The stress from nagging customers slows shops down more than anything. 

Please note: This is a business with employee’s and rents to pay. We only make money by working on your gear. If your gear has complex issues, the bill will probably be larger, which means we will make more. It is complete nonsense to assume that we want your gear to sit here collecting dust. Gear sitting here does nothing for you or us.

Payments: We are proud to accept all types of payments including cash, credit/debit card, check, wire, paypal, cattle, and shillings. Yes, we even consider gear in trade if that suits you.
Update 11/2018: We no longer accept credit card for transactions over $5000. Cash, check, wire, or paypal must be used at the customers expense.

Pickup: Once you’re notified that your gear is finished, you should pick it up as soon as possible. Any equipment left over 2 weeks past completion will incur a $10 a day storage fee. If you request a specific date for pickup (ahead of the current schedule but outside of the above listed rush fees) and fail to pick the equipment up on that date, the rush rates will be applied to your invoice.

Scary words: It’s really easy to have a straightforward and pleasant experience having your gear repaired. While most of the above and below is standard info, some specific things were added probably because of one person who decided to be a pest. This is not a corporate entity where our customers and clients are only numbers. We are real people doing hard and good work, and deserve to be treated as if you’re dealing with real people. A positive experience is as easy as being a reasonable person. 

Who We Are

Rosen Sound is a shop focused on the highest level of repair, restoration, sale, and rental of vintage synthesizer instruments. We are located in a nondescript industrial complex on the back streets of the south east side of Burbank, California. We are comprised of humans who share a common passion for music and the high end gear used to make it. We operate under the mantra that high end instruments deserve high end treatment, and all the stops must be pulled to achieve creative synergy between the musician and the instrument. The assortment of rare and one-of-a-kind instruments within the walls of our shop is a testament to the successful recognition of that mantra.

We invite all who wish to achieve greatness for their gear to visit our shop and utilize our services.
We humbly invite those who don’t care if their gear works flawlessly to look elsewhere.

About the Owner

Rosen Sound is ran by owner/operator Rob Rosen. Born into a family of jazz and classical upright bassist, Rob was exposed to great music quite early leading to him taking up the drums. Rob discovered synthesizers in high school and put the sticks down not too long after.

Rob found his love for synthesizers from listening to bands like Rush, Emerson, Lake & Palmer, Van Halen, and other keyboard/synthesizer laden heavy metal bands from Scandinavia. Although Rob listens to and appreciates synthesizer roots in classic pop and electronic records, Rob is a bonafide headbanger, and is probably the worlds biggest Iron Maiden fan.

Tech work came naturally from a young age born simply from not being able to afford repairs while playing in local bands. A career was chosen of it after the realization that he was more interested in what and how his gear was accomplishing sonic awesomeness than actually playing them, though he still is an avid player and practicer of keyboard instrument, even still playing the occasional gig in his heavy metal band.

After doing gear repair out of the garage for 5 years, Rob opened Rosen Sound as a brick & mortar in early 2014 at the original 1008 W Oak location. Today, Rosen Sound now occupies 10,000 square feet of real estate spread across 4 neighboring addresses to the original 1008 location.

Rob’s days now are comprised of working on the more complex electronic and restoration work that is in queue at his shop, alongside managing the day-to-day of owning a business. Other passions and activities include 3D CAD work, circuit design, being a dad, and collecting synthesizers.

Our repair philosophy can be summed up very quickly, but you can read on if you like.

“We believe synthesizers should work, be stable in pitch and timbre, operate as efficiently as possible, and work for time to come without regular visits to a repair shop. We accomplish these stabilities by utilizing modern advancements in the semiconductor industry and knowledge in electronics, without changing the sound of these instruments. A synthesizer should never have an outstanding issue and be presented as a completed repair, as this serves nobody any good, and doesn’t reflect well on us as artisans. We accomplish these feats by utilizing methods developed by us that improve the stability and functions of the instruments, without changing the sound or timbre in any way. We believe this is the only way to service a synthesizer instruments, and thusly, outright refuse work where the client wants less than the best for their instrument.”

More Specifically:



What To Know Before You Drop Off Your Gear

Our Work: It’s known to be the best around! Check out the “about us” page to learn more about what sets up apart from other LA Synth Shops. With that said, we are a very in demand shop and there’s a couple things you should know before coming in.

Turn Around Times: Can be anywhere from 1-8 weeks. Don’t let that scare you though, as most work that comes through the door can be handled by our incredible group of tech’s and workers in a shorter period of time. Very complex and strange issues must be handled by Rob, and his wait time can often be slightly longer than what’s allocated to other techs. For more info, give us a call. We are very upfront about our backlog and wait times.

Cost: We take a great deal of pride in the work we put into an instrument. We treat every job with the respect it deserves, and see the insides of instruments as a testament to our reputation. You will truly get what you pay for with our shop, and we stand by our work 100%, with no finite guarantee. Our work lasts, period. Our hourly rate is $100 per hour, with $100 paid on drop off which is applied towards the final amount due. You will be given an estimate and notified if it is to increase.

Our Guarantee: Your gear will work, stay in tune, and function as it was intended to. We stand by our work 100%. No 30 day warranties; we will be there for you and your gear if we worked on it. There are some exceptions, as we cannot guarantee other’s parts, or stability of 3rd party modifications. We will be happy to hear you out if you have any concerns and we will always be happy to help.

Our Commitment: We are often and mostly working with high level artists and studios which can often drop a load of 10+ synths on us at a time on a rush order. Please note our turn around can change when these situations arise. We highly encourage calling us to check on turn around status. We’re always happy to answer the phone.

Rush Options: We do offer rush service for a $200 bench fee and an increased labor rate of $125 per hour. A rush fee guarantee’s your instrument is on the bench within a day. Even though we have a vast stock of parts and IC’s, if your unit requires parts to be shipped, you will have to wait or pay for overnight/next day shipping. In less words, the rush fee guarantee’s your synth is worked on without waiting in the backlog, but does not guarantee a specific date of completion. Most of the time though, we have the parts needed to make the repair possible within 2 days.

Our Rights: We want your instrument to be an example of work we are proud of. With that in mind, one right we reserve is the right to re-do work from a previous technician if the work was done poorly. This is especially common with midi modifications and battery replacements. This generally will not add much at all to your bill, and you will be consulted and shown photos if the situation is especially poor. We also reserve the right to finish a job correctly. We will absolutely refuse to half-do a synthesizer. If you’d like to have half of your problems fixed and you don’t mind your synth being out of tune, you may consider looking elsewhere.