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We’ve had many happy customers over the past several years. Some of them were nice enough to write and tell us what they thought. If you’d like to add your testimonial, click here.

Repair Services
Consulting Services
Software Products
Hardware Products

Repair Services

Vintage Korg® BX-3/CX-3 Repair Service

Holy cow this thing is magic! Thank you Robert—I’m so grateful to you for the work you’ve done. Very happy!
Rogers Stevens
Swartmore, Pennsylvania, United States
Thursday, March 10, 2022
I just installed the main board in my CX-3 and I am very pleased to say that it works beautifully! No more crackles! Thank you!
Bill Conn
Valley Center, California, United States
Tuesday, March 1, 2022
Finally got down to putting the board back in today (received it earlier this week)…worked first time with the drawbars in the correct way! Thanks again for your help in resurrecting my CX3. I’m taking it out on a gig tonight. I forgot how heavy it is with all that wood!
Jondi Mac
Friday, November 26, 2021
I just wanted to take a moment to thank you for providing me with the parts that got my Korg CX3 up and running again! My tech here in Toronto was able to get it up and running with your parts and I'm so thrilled to be playing it again!
Rob Nicholls
Toronto, Ontario, Canada
Wednesday, April 4, 2021
I cannot thank Robert and Parastream enough for their repair/refurbishment of my 1st generation Korg CX-3! When I initially contacted Parastream, I was hopeful that this large project would be something they would agree to handle. The CX-3 I purchased on eBay was barely worth the unbroken parts it contained - but the fully functioning, virtually brand new Korg CX-3 I now perform with is truly an amazing electronic resurrection. The expertise and attention to detail this project received is as close to "perfect" as anyone could hope for. I am forever grateful that my 1970s era CX-3 truly has a second life ahead of it. Thank you for being true artisans of your craft!
Dave Freeman, Professional Musician,
Tampa Bay, Florida, United States
Wednesday, February 7, 2018
Hello Robert! The Board is now in my CX3... working perfectly! This was the first time I heard the CX3 in person... it's incredible! Thanks for all your work and commitment, and for everything else... I almost give up on this amazing instrument,... now its alive and growling! I'm very very happy! . :) I will strongly recommend your service... any time I have the chance to do it.
Francisco Acebal
Buenos Aires, Argentina
Wednesday, April 13, 2016
We were very pleased with the work that Parastream did on our Korg CX3 boards. We send it broken and we got it back working in a short period of time for a reasonable price! This Korgan sounds great now! Thank You!
Erik Larson
Liquid Reflections
Ashland, Oregon, United States
Friday, June 20, 2014
Robert, thank you very much for the repair of the circuit board of my BX-3's upper manual! The organ works like factory-new again, not least because you have also replaced the old, unreliable switches. I'm very, very pleased with your service and the nice communication. Greetings from Germany!
Wednesday, January 23, 2013
THANK YOU - THANK YOU - THANK YOU !!! You guys moved Heaven & Earth to not only fix my Korg CX3 - but to get it back to me in Detroit in time for me to play a string of important dates that I couldn’t fit my Hammond B3 onto the stage for.... and did WONDERFUL job !!! Robert was OUTSTANDING to work with and understood the "Rock & the Hard Place" I was stuck between - - and he really came through. I can’t recommend you guys more Highly. As a keyboardist - it meant so much to have another keyboardist working on my "baby" and shooting straight with me about what was found wrong. Thanks again.
Monte Porenta
New Boston, Michigan, United States
Thursday, April 14, 2011
Thanks for the help on my Korg CX3 repair!I downloaded the schematic from, and with your technical advice was able to repair the Rotary circuit.Thanks again, Mike
Mike D
High Tech Audio Video
Wednesday, March 23, 2011
Usually dealing with musical instruments, you’re asking the other party to just reach in your pocket and take everything! This was not the case with Robert. I thought I knew what was wrong with my Korg keyboard, but it turned out to be something totally different. Robert figured it out and had it back to me within a week working perfectly! All this for 1/2 the price anyone else would try to rob you for! Thanks Again!!!
Tom N
Wednesday, October 10, 2007
I am very pleased to add my highest recommendations to your service for others. Your method of providing dis/assembly instructions as well as your cooperation via email is an example to all vendors of how to treat customers. Hats off and thanks for your efforts they are sure appreciated. Although we have never met in person I feel though this I have made a new friend. Thanks again.
Gord MacAulay
Tuesday, July 11, 2006
Robert Weatherford and his company Parastream Technologies have been extremely helpful and successful in the repair of my Korg BX-3’s upper manual. KORG Canada and local repair shops were of no use due to the organ’s vintage electronics. Next I searched the internet and found Parastream Technologies. The web site accurately described the failure of my upper manual. Still a little uncertain that I really needed the recommended parts (RP-SM304A) I contacted Parastream for advice. My e-mail was promptly replied with trouble-shooting suggestions I should try before ordering parts. I eventually ordered parts but was saddened to find that they did not fix the problem. I contacted Robert for more advice. Several suggestions were made however still I had no luck. Robert suggested that I send him the faulty circuit board by mail. He promptly fixed it and sent it back. All is fine! In summary I highly recommend Robert and Parastream Technologies to anyone in need of repair of their BX-3/CX-3. Robert has the passion for and expertise to fix these Korg organs. You can even mail circuit boards to Parastream for repair. Thank-you Robert and Parastream.
Karl Dahlinger
High School Teacher
Ontario, Canada
Thursday, May 12, 2005
Just to thank you for the resources Korg BX3 related, i own one of these beauty's, and started to worry about the day it fails, but now i have the documentation...
A. Trincheiras
Aveiro, Portugal
Monday, December 15, 2003

Consulting Services

Microsoft® Windows® Development

We hired Robert to customize an existing SNMP network management package to support our products, a task which involved a considerable amount of new code development and user interface design. He also helped clarify project requirements, wrote the user’s guide and worked long hours with our testing department. The project was completed on time and within budget, and with good humor to boot. What more could you ask? We look forward to working with Robert again on future projects.
Marty Sauser
Application Software Technical Manager
EGT, Inc.
Thursday, April 13, 2006
We asked Robert to develop a highly configurable object editor for designing cards and receipts for prepaid products and services. The tool he delivered exceeded expectations in appearance, utility, flexibility, and ease of maintenance. I will definitely first consider using Robert when we next have a need for programming services.
Jeff Thompson
Director of IT Development
LDC Direct, Ltd. Co.
Monday, February 14, 2005
Robert has worked for us several times over the past few years. He has performed a variety of tasks, including converting our application for international markets, training our development team for international code development, and implementing several major user interface improvements. We look forward to working with him in the future.
Paul Darata
Electronic System Products, Inc.
Friday, August 9, 2002
Robert designed and developed the communications applications used by the ADP HRizon and Enterprise products. This software is used to send and receive critical payroll information between ADP clients and the ADP regional processing centers. This software is currently being used by over 700 large companies throughout the United States. During the past 7 years Robert has demonstrated excellent technical skills and produced high quality work for our ISO certified organization.
Mike Plecko
Manager, Software Development
ADP National Account Services
Tuesday, June 04, 2002
Robert worked on a Windows application to set up and monitor one of our broadband chassis products. With his hardware background, he was able to work with our hardware engineers to enhance the card’s firmware so the application could control more of the card’s parameters. The visuals and user interface were outstanding. Seven years later, the product is still in use!
Neil Buchen
Principal Engineer
Scientific-Atlanta, Inc.
Monday, June 03, 2002
Mr. Weatherford designed and developed a complex Windows application for KA that is used for monitor and control an industrial inspection system. He also designed and developed the communications protocol used to link them together. His extensive experience and knowledge of communication protocols and user- interface design enabled him to complete the project with quality and reliability. Robert’s attention-to-detail and quality-focus makes him a very valuable team member.
Charles Pinson
Knowledge Access International, Inc.
Monday, June 03, 2002

Software Products

Parastream PagePorter

I don’t see how any serious web designer can do without PagePorter. Without it, you can use FrontPage to design a look and feel and automated navigation for your site, *OR* you can do ASP.NET programming, but not both. But with PagePorter I now have the benefit of being able to use a FrontPage theme that is consistent throughout my web site on both static htm and aspx pages alike. Kudos to Parastream Technologies for this wonderful product.
Tom Laurent
Software Developer / Web Master
System Designs, Inc.
Thursday, January 27, 2005

Hardware Products


After waiting 2 years to for SM305 chips for my Korg CX-3, Parastream finally got them for me. After installing them, some other features on the organ still did not work. Through several weeks and even more emails, Robert went way out of his way to help me figure out the problem and I got it fixed. I would HIGHLY recommend Robert to anyone with a broken CX-3 or any other electronic problem for that matter. Thanks Robert!!
Jordan Kersten
St. Louis, MO, United States
Friday, April 20, 2007
I was very fortunate to find the RP-SM304A in a Google search for SM-304, with eight of the IC’s in a Crumar MagicVox 2000 electronic accordion. Discussions with Robert led to my purchasing four, one of which Robert had to custom-build to my specs. As it turned out, I did not need the RP-SM304A’s, but without them I couldn’t have completed a complex troubleshooting situation. My dealings with Parastream were smooth and problem-free, and Robert was both helpful and accommodating. I would highly recommend his services in any context!
Geoff Sale
New Westminster, BC, Canada
Monday, March 07, 2005
Thank you for the RP-SM304A chips. They work like a charm! What was once a smashed, trashed and battered CX3 is now an organ. All I need to find now is its missing ‘G’ key. Please let me know if you ever run into somebody who has extra Korg CX keys lying around.
Tuesday, February 25, 2003
I just purchased your RP-SM304A circuit, to replace a dead Siemens unit which had caused R64 on the main board to burn up. I was surprised, and very gratified, to find your site and to know that you supply replacements for the old Siemens chips. Thank you! I can now get my old CX-3 back in service. I would love to see a C/V add-on kit, and I imagine that there are many CX-3 owners who would agree.
Bill T.
Monday, December 30, 2002
Hi, Just wanted to say thanks for making that RP-SM304A available! Not only did it fix the CX-3, but it seems to sound a whole lot clearer and more alive than it did before, without any alteration to the warmth and sound of the original CX-3. The upper half of the keyboard now sounds great, and the doubled octave hi-c note is now playing correctly.
L. Brantley
Reisterstown, Maryland, United States
Sunday, August 25, 2002

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