Orange Amplifiers Valve Tester MKII Expansion Module E - 300B

This Orange Amplifiers Valve Tester MKII Expansion Module E module adds the capability to test 300B directly heated triode valves to your Orange Valve Tester MKII. The 300B is a popular power tube known for its warm, rich tone and is often used in high-end audio amplifiers. This module ensures you can accurately assess the condition of your 300B valves for optimal performance.