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Mesa Boogie 5U4G Rectifier Tube
The Mesa Boogie 5U4G Rectifier Tube is a high-quality vintage-style tube designed for use in tube amps. Featuring the iconic Coke Bottle shape and soft voltage response, it delivers natural compression and bloom – ideal for expressive blues, rock, and jazz tones. Trusted Mesa/Boogie engineering ensures premium reliability and performance.
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Product attributes
Model :
5U4G Rectifier Tube
SKU :
SUP_nj1881920
Warranty :
2 years
Producent :
Mesa Boogie
Product Description
Details
Mesa Boogie 5U4G Rectifier Tube – classic vintage-style rectifier tube
If you’re looking for warm, dynamic tone with characteristic compression and flexible response in your amp – the Mesa Boogie 5U4G rectifier tube is an excellent choice. Based on a classic 1930s design, this model features the iconic “Coke Bottle” shape, which not only looks vintage but also affects the amp’s response and feel.
Product features
- Original Mesa/Boogie design – full compatibility with selected Mesa amps
- Soft response and increased sag – perfect for achieving vintage-style compression and bloom
- Higher voltage drop compared to the 5U4GB version – smoother transitions under load
- Retro Coke Bottle-style glass envelope – classic aesthetics and high-quality internal components
Perfect for musicians who value expressive dynamics
The 5U4G tube is optimized for players seeking a warm, organic sound with natural compression and slow power-up response. Ideal for blues, jazz, and classic rock – anywhere you need expressive playing and vintage tone response.
Typical applications
The 5U4G is commonly used as a rectifier in classic-style tube amplifiers. Valued for its slow voltage rise and natural sag, it’s a favorite among guitarists who want to replicate the feel and response of vintage gear.
Technical specifications
- Type: Rectifier tube
- Model: 5U4G
- Heater voltage: 5V
- Max. plate current: 250 mA
- Base: Octal (8-pin)
- Design style: Coke Bottle
- Total height: approx. 130 mm
- Manufacturer: Mesa/Boogie
Materials and construction
Each tube is engineered and tested to Mesa Engineering’s strict standards, using high-grade glass, filaments, and components. All units undergo detailed quality checks to ensure consistent voltage drop and impulse response performance.
What’s in the box
- 1x Mesa Boogie 5U4G Rectifier Tube
- Original Mesa packaging to protect the tube during transit
- Installation guidance and mounting considerations
Why choose the Mesa Boogie 5U4G?
The Mesa Boogie 5U4G rectifier tube is the perfect solution for players who appreciate classic tone, dynamic response, and reliability. With its vintage Coke Bottle appearance, durable build, and expressive feel, it’s a component that enhances your amp’s tone and performance. Supplied by an authorized dealer – ensuring originality and quality from Mesa/Boogie.
Shipment
Product delivery details Mesa Boogie 5U4G Rectifier Tube
Shipment from Warsaw, Poland.
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Product faq
Mesa Boogie 5U4G Rectifier Tube - Frequently asked questions.
Does the Mesa 5U4G tube fit every tube amp?
No – due to its tall Coke Bottle design, check if there’s enough space in your amp’s chassis before installation.
What’s the difference between 5U4G and 5U4GB?
The 5U4G has a softer voltage response and more natural sag, while the 5U4GB offers higher current capacity and a firmer feel.
Is this an original Mesa/Boogie product?
Yes – each tube is tested and certified by Mesa Engineering and comes in original packaging.
Do I need technical knowledge to install the tube?
Basic understanding of your amp’s internals is recommended. If in doubt, consult a technician.
How long does the 5U4G tube last?
With standard use, the tube can last hundreds of hours. Lifespan depends on amp design and usage intensity.
Can this tube be used in Hi-Fi systems?
Yes – as long as the circuit supports the 5U4G specs and pinout.
Where is the tube made?
Mesa tubes are produced in specialized partner factories and tested in the USA to Mesa’s standards.
What are the tube’s dimensions?
Approx. 130 mm in height, standard 8-pin octal base. Always verify space inside your amp before installing.
