Mesa Boogie 5U4GB Rectifier Tube (Individual)

Mesa Boogie 5U4GB Rectifier Tube (Individual)

Marsoni

M251S

$39.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Mesa Boogie 5U4GB Rectifier Tube (Individual)The MESA 5U4GB Rectifier Tube is our very best overall 5U4 and our rectifier tube of choice in the production of all new MESA amps featuring this tube. This tube produces a "traditional vintage sag" with the most elastic and compressed feel of the two 5U4's that we offer. Amazing feel and exceptional overall quality make this our factory favorite. Based on classic 1950s technology, the 5U4GB is a vastly improved 5U4 design that is extremely reliable

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Pros: Extremely Durable: Survived an aggressive chewer where tennis balls failed. Dual-Visibility: Features both internal flashing lights and a glow-in-the-dark "chargeable" surface. Perfect Size: Fits comfortably in the mouth of a 40lb medium-sized dog. Same size as a tennis ball. Cons: Battery Life: Unsure how long the internal flashing lights will last (though it has held up well so far).

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Reviewed in the United States on February 8, 2026

Verified Purchase

Andrea S.

Waukegan, US

★★★★★ 5

Great for night time play!

Size: One-Size-for-Most

This ball is great! It is a 2-for-one light up feature so we love the flashing lights and if she drops it in the snow after those lights stop, we can still find it because of the strong glow that gets its charge from the flashing LED lights. Our first one lasted a few years, we lost it on a trip so now back for our second one so we can keep the night time fetch going! She is a golden retriever for size reference. Any bigger of a breed and I would worry it might be too small for her mouth. It’s a bit smaller than a tennis ball. Just don’t make the same mistake I did and let them have it in the house at night, she walked up to my bedside while I was asleep one night and squeezed it to activate it. Those lights are so bright it was a rude awakening!

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Reviewed in the United States on November 11, 2025

Verified Purchase

Katie

Carnegie, US

★★★★★ 4

Good option for playing at night

Size: One-Size-for-Most

This ball is a good option if your dog likes to fetch at night. It stays lit for about 20 minutes or so, but that is me only leaving it out of the counter, being "charged" by whatever house lights are on. My dog isn't a big chewer, but it seems as though it would hold up well. I like that it is easy to rinse and clean. It seems to be a good value.

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Reviewed in the United States on January 16, 2026

Verified Purchase

Amazon Customer

Whiting, US

★★★★★ 5

Night play

Size: One-Size-for-Most

My dog like many other dogs loves to play. We needed a ball that fit into the handheld thrower we had but something that we could find it at night. This has been wonderful!

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Reviewed in the United States on April 26, 2026