Tube Amp Diagnostics II – Advanced Techniques

This seminar focuses on tube theory (with some very basic math) to determine wattage, tube parameters, and to get the most out of diagnostic equipment when dealing with tube circuits. The students will learn to use an oscilloscope in conjunction with a signal generator. They will also learn to use decibel meters, frequency counters, and modify tone. Fine details of sound will be demonstrated, explained and discussed. Modifications, advanced implementation of effects systems, and pro audio interfacing will round out the curriculum.



  • Reading advanced schematic diagrams
  • Deep signal flow
  • Advanced testing
  • Oscilloscope functions
  • Tone modifications
  • Decibel meter test functions
  • Pro audio interfacing
  • Repair vs. restoration / emergency preparedness

Prerequisite: It is recommended that students have completed Tube Amp Diagnostics I.


Course fee: $685

*Tuition includes lecture and demonstrations, course information handouts and reference materials. An early registration discount may apply.


Kye Kennedy Kye will guide students toward a deeper understanding of tube amp circuitry and troubleshooting in this advanced course.  He brings decades of experience as an amp and stage technician working for an impressive roster of clientele in Nashville, the mid-south and around the globe. Kye teaches exclusively at the Chicago School of Guitar Making.

Ian Schneller is the founder and chief instructor of the Chicago School of Guitar Making. With over 800 handmade instruments bearing his Specimen name, he brings a wellspring of knowledge to the classroom with the mission of perpetuating the tradition of handcraft and design innovation. He has shown his work in a variety of museums around the country and is a faculty member of the Sculpture Department at the School of the Art Institute of Chicago

How to Register:

You can register for any of our classes online, by phone or in person.  Registrations are limited to 8 students.

Register by Phone  (773) 489 – 4830 

Call us if you prefer to register over the phone with your credit card. We will send you a confirmation via email, or by snail mail if you prefer.

Register Online

Make your selection of the class dates you wish to attend in Available Dates, column on the upper right of this page and click ENROLL NOW. Enter the required information and then proceed to pay by clicking the Paypal button and choose your method of payment.

NOTE: It is NOT necessary to have a Paypal account to use their service.

Register in Person

Come by the shop during business hours and enroll using cash, credit card, or a personal check.

Business Hours:

Monday – Friday: 12 – 7, Saturday: 12 – 5

Map our location


Click Here for a list of nearby places to stay during seminars, along with transportation information.

Tube Amp Building12 Tube Amp Building11

Choose Date
July 31
Monday 10 am - 5pm
$685.00 (USD)
-$50.00 (USD) Early Registration Discount
September 25
Monday 10 am - 5pm
$685.00 (USD)
-$50.00 (USD) Early Registration Discount


Classes are taught by Specimen owner Ian Schneller, or guest instructor Kye Kennedy. The course description will state who the instructor is for the given class


All classes are held at Specimen located at 1240 N. Homan Ave. in Chicago, Illinois. Click here for a map

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