THD BiValve 30 Head

Marsoni

M251S

$499.50

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

THD BiValve 30 HeadThe BiValve 30 is a Single Ended Class A amplifier head that allows for versatile tonal experimentation by switching between various octal based power tubes, such as 6L6, EL 34, and KT 66, without the need for re biasing. You can mix and match any combination of output and preamp tubes (12AX7, 12AT7, etc.) to achieve different sounds. This amp delivers a range of tones from smooth and clear to aggressive overdrive, with a powerful output transformer

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My dogs absolutely love these and the hardness keeps them busy for a while. The package comes with various thickness of sticks. The thinnest ones only last for 5-10 minutes, but the thickest ones take 3-5 hours. The top end varies as it totally depends on the dogs' energy levels at the time. I'm not crazy about the smell of peanut butter and was happy to find these to be more woodsy with a faint peanut odor. My dogs get super excited as soon as they see the bag! My two dogs are different breeds, but both small to medium in size (32-40 pounds). I was worried about choking and the digestion of these. This is the second month and we haven't had a single issue.

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Reviewed in the United States on October 20, 2025

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June Seigler

Draper, US

★★★★★ 5

They are great for teething

Pattern Name: Peanut Butter, Size: 6 Inch (Pack of 25)

My puppy loves the flavor and to chew on them.

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Reviewed in the United States on June 5, 2026

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