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Mesa Boogie 5AR4 RECTIFIER TUBE (INDIVIDUAL)
The Mesa/Boogie 5AR4 is a premium-quality tube rectifier offering a vintage-style response with smooth compression and fast voltage recovery. It provides a more organic feel than solid-state diodes and less compression than other Mesa tube rectifiers. Ideal for class A/AB tube amps, it delivers stable voltage with musical dynamics. Each unit is hand-selected and tested in the USA.
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Product attributes
Model :
5AR4 RECTIFIER TUBE (INDIVIDUAL)
SKU :
SUP_nj1881947
Producent :
Mesa Boogie
Product Description
Details
Mesa/Boogie 5AR4 – classic-style rectifier tube with vintage feel
The Mesa/Boogie 5AR4 is a premium-quality rectifier tube offering a classic, vintage-style response with soft signal compression and musical dynamic behavior. It delivers an ideal balance between responsiveness and saturation, making it a great choice for traditional tube amplifier circuits where expressive tone and smooth attack are desired.
Key features
- Type: 5AR4 (GZ34) rectifier tube
- Compression level: low to medium
- Smoother feel than solid-state silicon diodes
- Less compression than other Mesa rectifier tubes (e.g., 5U4, 5Y3)
- Delivers a vintage, dynamic response
- Hand-tested and selected in the USA
Dynamic response and tonal character
The 5AR4 tube features relatively fast voltage response with moderate signal sag, producing a more organic feel when playing at higher volumes. Its tone is musical and articulate, making it ideal for blues, classic rock, and other genres that benefit from controlled, vintage-like power supply behavior.
Applications
- Tube guitar amplifiers using a rectifier stage
- Class A and AB boutique amps
- Tube conversions from solid-state rectifiers
Technical specifications
- Type: 5AR4 / GZ34
- Manufacturer: Mesa/Boogie (USA)
- Function: tube rectifier (HT power supply)
- Voltage behavior: fast response, mild sag
- Compression: low to medium
- Interchangeable with: GZ34 types
Why choose Mesa/Boogie 5AR4?
With its smooth voltage transition and natural dynamic compression, the 5AR4 strikes a great balance between the stiffness of solid-state diodes and the softness of traditional tube rectifiers. If you're looking for more tonal expressiveness and feel from your amp’s power section, this is the right choice.
Shipment
Product delivery details Mesa Boogie 5AR4 RECTIFIER TUBE (INDIVIDUAL)
Shipment from Warsaw, Poland.
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Product faq
Mesa Boogie 5AR4 RECTIFIER TUBE (INDIVIDUAL) - Frequently asked questions.
What is the Mesa/Boogie 5AR4 used for?
It’s a tube rectifier that converts AC to DC voltage in the power section of a tube amplifier.
How does the 5AR4 sound?
It offers low-to-medium compression with quick response – smoother than silicon diodes but tighter than other tube rectifiers like the 5U4.
Will this tube fit any tube amp?
Only in amplifiers designed for rectifier tubes compatible with the 5AR4 (GZ34).
Does Mesa/Boogie test every tube?
Yes – each tube is individually tested and hand-selected in the USA.
Can I replace silicon diodes with this tube?
Yes – if your amp supports it, the swap gives a more natural, saggy power response.
What are the alternatives to the 5AR4?
Mesa’s 5U4 and 5Y3 tubes offer more compression and a slower response.
Does this tube affect the amp’s feel?
Yes – it affects power sag and dynamic behavior, especially under heavy load.
Do I need a technician to install it?
If you're familiar with your amp’s specs – no. Otherwise, consult a technician before replacing.
