Custom Disk Recording and Mastering Systems
Cutter Head Repair and Modification
Disk Recording Lathe Restoration and Modification  
Custom Test and Calibration Records

Analog Disk Mastering  

Analog Magnetic Tape Recording and Duplication

Tape Machine Restoration, Repair and Modification
Custom Test and Calibration Tapes

Analog Sound Recording  

Vacuum Tube Electronics

Restoration, Repair and Modification of Vintage Vacuum Tube Equipment
Tube Testing and Matching
Custom Output Transformers

Product Development

Transducer Design
Transformer and Inductor Design
Electronic Circuit Design and Prototyping
Mechnical Assembly Design and Prototyping
Documentation, Research Papers and Engineering Reports

Mechanical Engineering

Precision Engineering and Machining