
Valve Tester MKII
Automatically tests Hi-Fi/guitar amplifier valves and displays their condition, performing a wide range of tests, quickly and accurately.
Free delivery worldwide when you add this product to your basket.
We're sorry, but this item is unavailable.
Preorder Today
More on the Way
Free -Day Shipping
Only Left!
Get it by
when you order within
Call to order!
We're sorry, but this item is unavailable.
Preorder Today
More on the Way
Free -Day Shipping
Only Left!
Get it by
when you order within
Call to order!
We're sorry, but this item is unavailable.
Preorder Today
More on the Way
Free -Day Shipping
Only Left!
Get it by
when you order within
Call to order!
We're sorry, but this item is unavailable.
Preorder Today
More on the Way
Free -Day Shipping
Only Left!
Get it by
when you order within
Call to order!
We're sorry, but this item is unavailable.
Preorder Today
More on the Way
Free -Day Shipping
Only Left!
Get it by
when you order within
Call to order!
We're sorry, but this item is unavailable.
Preorder Today
More on the Way
Free -Day Shipping
Only Left!
Get it by
when you order within
Call to order!
We're sorry, but this item is unavailable.
Preorder Today
More on the Way
Free -Day Shipping
Only Left!
Get it by
when you order within
Call to order!
Coming soon:
Valve Tester MKII – Expansion Modules – £195 SOLD SEPARATELY
Designed & Made in the UK
The Orange Valve Tester MKII, proudly crafted and engineered in the UK, revolutionises valve-testing technology. With seamless precision and simplicity, it effortlessly conducts a comprehensive array of tests, setting a new global standard for both Hi-Fi enthusiasts and service professionals.


Complexity made simple
The simplicity of operation belies the complexity of what happens inside the unit during each test. Inside is a sophisticated microprocessor controlled testing system carrying out a series of complex inter-electrode switching and measurement exercises. Requiring no knowledge of valve theory a user simply inserts a valve into the correct socket, selects the valve type from the list and presses the OK button. The status of the valve under test is quickly revealed.
Portable and Convenient
The Orange Valve Tester MKII is a sophisticated, simple to use, stylish and portable unit. Its usefulness has been designed to meet the needs of both seasoned audiophiles and those new to testing valves. The device’s fully automatic testing and matching capabilities ensure optimal valve performance across a wide range of audio valve equipment allowing users to effortlessly maintain quality, maximum performance and limit possible distortion of their Hi-Fi amplifier caused by substandard, worn or faulty valves.

New and Improved
The latest model of the Orange Valve Tester has greatly improved algorithms with an updated database containing the test results of literally hundreds of new, used and faulty valves giving the MKII a much greater intelligence compared to the original Orange VT1000. All the voltages required by the tester are internally derived, stabilised and controlled allowing a rapid static and transient testing without unnecessary heat generation.
In addition, the new unit features higher current capacity with enhanced ‘grid leakage detection testing’, a new ‘thermal runaway’ test and a new ‘digital microphony function’ to test pre-amp valves. Its new rugged mechanical design and form also has improved valve sockets.
- Microphony test (ECC81, ECC82, ECC83 & 12BH7 only)
- Capability to test directly heated valves with expansion modules
- All valves tested under higher current.
- Improved test sockets
- More rugged design
- Capability to test other valve types such as rectifiers with expansion modules
- Valve failure mode fault

Expansion Modules Available
The Orange Valve Tester MKII’s new optional expansion modules will be particularly appealing to Hi-Fi enthusiasts. It allows the testing of directly heated valves such as the 300B and other valve types including EF86, EZ80, 6SN7 and rectifier valve GZ34.

This is a first-rate and extremely comprehensive tester that is really easy to use. Together with the expansion modules it can check most of the valves that you’re likely to encounter in your system and so is highly recommended for valve fans.
★★★★★Hi-Fi Choicehttps://orangeamps.com/wp-content/uploads/2024/08/HFC_518_Orange_Reprint-LOW84.pdf–Read Review

“This is a significant upgrade of version 1. What Orange has done here is streamline the valve testing process down to its essentials. This provides a quick way to test valves in a compact footprint that doesn’t require any specialist knowledge to operate. Ultimately, it provides us with as much information as most amp techs would need to know: Is the valve good? If so, rate its performance so I can match it to a similar valve.”
Colin Scott - Science of Loudhttps://youtu.be/wZNSxdAPJxAWatch the full video
Style: | Test equipment |
---|---|
Testable Valves: | EL34, 6CA7, 6L6, 6V6, 6V6GTA, KT66, KT77, KT88, KT120, 6550, 5881, EL84, 6BQ5, ECC81, 12AT7, ECC82, 12AU7, ECC83, 12AX7, 12BH7 |
Weight: | 1.56 kg ( 3.44 lbs ) |
Included in box: | 1 x Valve Tester MKII | 1 x Power Supply | 1 x Mains lead | 1 x Manual | 1 x Pencil |
Dimensions ( W x D x H) | 17.6cm x 16.2 x 6.8cm (6.9 x 6.4 x 2.7 inch) |
Expansion Modules Currently Available: | 3000B, 6SN7, EF86, EZ80, GZ34 |
Expansion Module Dimensions (W x D x H) | 11cm x 5.5 x 6cm (4.33 x 2.17 x 2.36 inch) |
Expansion Module Weight | 0.34 kg ( 0.75 lbs ) |
Valve Tester MKII - Testing Sequences
1. Heater filament test: Short circuit
2. Heater filament test: Open Circuit
3. Heater filament test: Tolerance check
4. Heater cathode insulation: Leakage
5. Heater cathode insulation: Short Circuit
6. Test for heater current abnormalities
7. Amplification factor
8. Voltage gain
9. Power gain
10. Screen grid test
11. Mutual conductance test
12. Dual test for double triodes
13. Emission
14. Inter Electrode leakage
15. Inter electrode short circuit
16. Flash-over (arc detection, high voltage breakdown)
17. Gas ionisation test
18. New thermal runaway test
19. New enhanced grid leakage detection test