Valve Tester MKII
Valve Tester MKII
The Orange Valve Tester MKII takes the guesswork out of valve testing, making it easy to check the condition, strength, and life expectancy of most common preamp and power valves. Designed and made in the UK, it works with EL34, 6L6, EL84, ECC83, and many more tubes, with no set-up, charts, or experience required. Its compact, rugged design makes it ideal for repair techs, hi-fi enthusiasts, touring backlines or studio use, with an intuitive interface and built-in protection circuitry. Now with optional expansion modules, the Valve Tester MKII offers future-proof testing in a portable format. If you use valve amps, this tool just makes sense.
Tests 20+ valve types
Accurate PASS/WORN/FAIL results
Built-in safety features
Expansion modules available
In More Detail
The Valve Tester MKII is a precision tool designed to bring professional-grade valve testing to a wider audience. With full support for over 20 valve types, including common models like EL34, 6L6, EL84, ECC83 and KT88, it accurately measures emission, current, and mutual conductance, giving clear PASS, WORN, or FAIL results. Built-in protection features safeguard both the tester and the valve during use, while an internal database handles complex calculations behind the scenes.
Designed and built in the UK, the Valve Tester MKII improves on the original with a sleeker form factor, improved test speed, and the option to add modular upgrades for less common valve types: this will be particularly appeal to Hi-Fi enthusiasts allowing the testing of directly heated valves such as the 300B and other valve types including EF86, 6SN7 and rectifier valves GZ34 & EZ80. It’s quick to set up, easy to use, and portable enough for gig bags or workbenches alike. Whether you're a tech, playe,r or engineer, the Valve Tester MKII offers dependable diagnostics in a durable, plug-and-play package.
Designed & made in the UK
The Valve Tester MKII is proudly designed and built in the UK, with every unit assembled and tested for quality and reliability. The engineering reflects Orange’s long heritage of trusted amp design, offering accurate performance in a durable, studio-grade enclosure. It’s a serious tool with a real-world pedigree, built to last and designed with the needs of amp techs, backline crews, and tone-conscious players in mind.
Expansion modules available
The Valve Tester MKII supports optional plug-in boards that allow testing of less common valve types, such as EF86, 300B, and 6SN7. These modular upgrades make the tester flexible and future-ready, ensuring it grows with your needs. Ideal for vintage amp specialists or studios with broad valve inventories, it’s a smart investment in long-term capability.
Complexity made simple
Valve testing has traditionally required charts, calibration, and technical know-how. The Valve Tester MKII changes that. Its onboard software automatically configures the test conditions for each valve type, giving you instant PASS, WORN, or FAIL readings with no guesswork. A numerical grading of each valve allows you to match valves of similar wear level for optimum audio performance. It’s fast, foolproof and safe to use, perfect for musicians, engineers or techs who need reliable information without hassle.
Portable and convenient
With its compact footprint and robust casing, the Valve Tester MKII is built to travel. It’s small enough for a studio bench, flightcase, or gig bag, yet rugged enough to handle use on the road. Whether you’re maintaining your own amps or managing a busy repair schedule, the Valve Tester MKII brings serious testing capability to any environment, with no lab bench required.
New and improved
The MKII version improves on Orange’s original Valve Tester with faster operation, broader compatibility, and a more compact chassis. It’s quicker to use, easier to carry and better suited to modern workflows, whether you’re testing vintage tubes or keeping a touring rig in shape. The updated interface and internal processing make it more powerful than ever.
Tests 20+ Valves
Valves supported: EL34/6CA7, 6L6, 6V6/6V6GTA, KT66, KT77, KT88, KT120, 6550, 5881, EL84/6BQ5, ECC81/12AT7, ECC82/12AU7, ECC83/12AX7, 12BH7. Valves supported with the optional Expansion Modules: EF86, 300B, 6SN7, EZ80, 5AR4/GZ34
Built to Perform
Tour-tough, gig-ready and made with premium components, all Orange equipment is built for a lifetime on the road or in the studio.
Iconic British Tone
From classic crunch to modern pristine chime, the unmistakable Orange sound is rich, responsive and full of character.
Instantly Recognisable
Our bold design, including the classic pics-only controls and signature orange tolex finish, have made us a stage and studio icon for half a century.