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Harmony H306A Amplifier

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Page last updated Aug 10, 2025

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Description

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The Harmony H306A Amplifier is a versatile combo guitar amplifier that caters to both novice players and seasoned musicians seeking a reliable and robust sound. This amplifier is a nod to classic tones, yet it incorporates modern technology to ensure compatibility with today's demands. With its ability to deliver a rich and full-bodied sound, the H306A is perfect for small venues, studio sessions, or simply jamming at home.

The H306A features a dual-channel design, allowing you to switch between clean and overdriven tones seamlessly. This amplifier is powered by solid-state technology, providing reliable performance and consistent sound quality every time you plug in. The onboard EQ offers fine-tuning capabilities, so you can sculpt your sound to perfection, whether you're playing blues, rock, or jazz.

With a sturdy construction, the Harmony H306A Amplifier is built to withstand the rigors of regular use. It includes an auxiliary input for jamming along with backing tracks and a headphone output for silent practice, making it a comprehensive tool for any guitarist looking to refine their skills.

Key Features:

Dual-channel design for clean and overdriven tones
Solid-state technology for reliable performance
Onboard EQ for sound sculpting
Auxiliary input for playing along with external audio sources
Headphone output for quiet practice
Compact design suitable for various playing environments

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GordonLaSalleMusic

Vintage 1960's Harmony H306A Product Demo

GordonLaSalleMusic

Harmony H306A amp

Acid Amp

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Harmony H306A Amplifier.

Features and functionality

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The Harmony H306A has a warm tone, with a volume range where compression and tube breakup begin around 5 on the dial, offering vintage Fender-like warmth.
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Users highlight the amp's ability to jump two channels for an extra mid boost, enhancing its tonal versatility.
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Mods and upgrades

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Owners recommend replacing the power transformer; Mercury Magnetics is noted for providing a suitable replacement.
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Setup and maintenance

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It's advised to ground the power cable for safety, and to check for the need to replace filter capacitors and power tubes.
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Comparisons

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The Harmony H306A is likened to the Fender Harvard and is said to deliver Fender Deluxe and Trem tube amp qualities with a Marshall Plexi-like distortion.
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Value and pricing

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In the US, these amps are listed between $400 and $900, though actual sales data is sparse. Condition heavily influences potential value.
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Use cases and applications

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Despite its department store origins, the amp is considered a "sleeper" for budget-conscious players seeking vintage tones.
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C.W. Stoneking

Singer, Guitarist

Verified via Photo

Of his Harmony amp, Stoneking says, "I bought this amp from a junk shop in Clarksburg, West Virgina back in 1994, the guy tried to sell me the guitar that went with it (a Hound Dog Taylor lookin thing with flatwound strings that was bent up like a banana), I managed to get out of there with only the amp, 40 bucks, it used to sound pretty good, now I think it needs a good cleaning out (and a new handle), crackles and pops too much," on his website.