The Mesa Boogie 5AR4 Rectifier Tube is a gas-filled rectifier tube and the appropriate replacement for guitar amps. Although it produces more 'tube sag' compared to silicon diodes, the 5AR4 - or also called GZ34 - offers a very responsive and dynamic character. The 5AR4 finds application in the Mesa Boogie Heartbreaker, Blue Angel, Maverick and makes an ideal replacement for many other vintage amps.

The Mesa Boogie 5AR4 Rectifier Tube at a glance:

• Mesa Boogie 5AR4/GZ34 Rectifier Tube.
• Bare to light 'tube sag' for an organic sound
• Fits Mesa Boogie Heartbreaker, Blue Angel, Maverick and many more
• Made in Russia