Say, "I built it myself" with SPOTFIRE Tube Audio®
Why Choose Spotfire?
SpotFire valve amplifier kits offer the sound quality associated with audiophile-grade tube amplifiers, implemented with modern engineering discipline. Each kit is:
professionally designed
built using high-quality audio-grade components
supplied with clear, step-by-step documentation
SpotFire kits are intended to be built, understood, and kept — not treated as disposable projects.
What are Valve Amplifiers (Tube Amplifiers) ?
Valve amplifiers — also known as tube amplifiers — use thermionic valves rather than solid-state devices to amplify audio signals.
Both terms are used interchangeably throughout this website.
Understanding valve audio leads to better systems and more satisfying builds. Follow the links below to learn more.
Safety Comes First
Valve equipment operates at high temperatures and potentially dangerous voltages.
When designed and used correctly, tube amplifiers are safe.
However, builders and users must observe appropriate precautions.
Key points:
Tube equipment contains high voltages that can persist after power is removed
Valves operate at high temperatures and can cause burns
Equipment must be placed away from flammable materials
Adequate ventilation is essential
Tube amplifiers should not be left unattended during operation
What Builders Say
“My very first impression was that a curtain had been removed from the sound.
A brilliant appearance of high and mid frequencies — the music feels tangible.
My sincere compliments on the SE5 project, and thank you for your patience and support.”*
— Dario, Italy
SPOTFIRE Tube Audio and Rockstar are registered trademarks. Spotfire tube Audio - formerly Red Roo Kits.