Diamond Amplification

F4 100 Watt Tube Amplifier

Name: F4 100 Watt Tube Amplifier
Brand: Diamond Amplification
SKU: DA-F4
Price: 1299.99 USD
Availability: InStock

$1,299.99 USD $1,499.00 USD

In stock, ready to ship

The F4 is the Phantom’s rebellious sister—built with Diamond DNA but priced for the working musician. Part of the Vanguard Series, it delivers heavy, percussive distortion with modern authority while keeping things accessible. Two channels, a dialable Depth control, and a front-panel “bright” switch give the F4 surprising flexibility, letting you sculpt everything from chest-thumping lows to cutting highs.

With full tone controls on both channels and a master volume to keep it all in check, the F4 is ready for stage or studio. Six 12AX7s and a 5881-powered output stage bring plenty of punch, while Diamond’s no-compromise build ensures the same rugged reliability found across the entire lineup.

Steel grilles, metal knobs, and a green LED glow finish off the look, giving the F4 the same unmistakable attitude as its big brother. Affordable, versatile, and unapologetically Diamond—the F4 proves pro tone doesn’t have to break the bank.

Product variants

Pickup available at Indiana Warehouse

Usually ready in 2-4 days

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F4 100 Watt Tube Amplifier

$1,299.99 USD $1,499.00 USD

Diamond, The legends rise

by Chris Loveless

Turn it up—because Diamond is back. I started here in 2008 as a wire jockey and worked my way through every corner of this company. From soldering wires to shaping designs, running production, and steering the big-picture vision—I do it all. Around here, I’m the “Diamond Guy.” And now I get to say it loud: the amps that fueled legends have risen!

Diamond amps have been the beating heart of world-renowned acts, carved into the DNA of countless records, and unleashed on the biggest stages in the world. Born from Jeff Diamant’s vision and Martin Golub’s genius designs, our amps became the benchmark—built tough, road-ready, and dripping with tone. Each one is still hand-crafted, run through a brutal 64-point test, and Guaranteed for Life.

This isn’t just a comeback. It’s a rebirth. It’s fire in the tubes, thunder in the speakers, and a legacy that refuses to fade.

Diamond. It’s what ignites the stage.

FEATURES

100 watts (4 x 5881 - 6 x 12AX7)
2 channels (Channel 1 - Clean/Channel 2 - Crunch)
Full tone controls (both channels) Volume, Gain, Bass, Middle, Treble, Presence
Front panel dialable "deep" control and front panel voicing switch
Bright Switch
Ohm selector switch for 4, 8 or 16ohm output.
All components specifically spec'd and tested by Diamond before inclusion in the product.
Independent LED's indicate which volume/gain is active and whether the boost is engaged.