Diamond Amplification F4 – Unfiltered power. Real-world pricing.
The Diamond Amplification F4 is built for players who demand commanding tone without boutique-level barriers. Designed as part of the Vanguard Series, the F4 channels Diamond’s high-performance amp philosophy into a no-nonsense, road-ready platform that delivers tight lows, aggressive midrange, and articulate top end with modern precision.
With two independent channels and extensive front-panel shaping options, the F4 adapts effortlessly to your playing environment. The Depth control adds physical impact to the low end, while the Bright switch and voicing options allow you to fine-tune attack and presence. From clear, responsive cleans to thick, percussive crunch, the F4 remains controlled, focused, and unmistakably powerful.
A 100-watt tube output section powered by 5881s provides massive headroom and authoritative punch, while six 12AX7 preamp tubes ensure sensitivity and dynamic response. Whether it’s on stage under high volume or in the studio at controlled levels, the master volume and dual-channel tone stacks make dialing in your sound fast and intuitive. Finished with steel grilles, metal hardware, and Diamond’s signature green LED glow, the F4 looks as bold as it sounds.
Key Features
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100 watts of all-tube power using 4× 5881 power tubes and 6× 12AX7 preamp tubes
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Two-channel design with dedicated Clean and Crunch channels
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Independent tone controls per channel, including Gain, Bass, Middle, Treble, Presence, and Volume
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Front-panel Depth control for adjustable low-end impact
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Bright switch and voicing control to tailor clarity and attack
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Selectable 4, 8, or 16-ohm outputs for cabinet compatibility
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Premium, Diamond-tested components for long-term reliability
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LED channel and boost indicators for clear visual feedback
Who Is It For?
The F4 is built for working musicians, modern rock and metal players, and tone-focused guitarists who want serious output, tight response, and professional construction without paying boutique premiums. If you need an amp that holds together at volume, cuts through a mix, and survives the rigors of regular use, the F4 delivers.
Tech Specs
Core Specifications
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Power Output: 100 Watts
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Amplifier Type: All-tube
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Channels: 2 (Channel 1 – Clean, Channel 2 – Crunch)
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Preamp Tubes: 6 × 12AX7
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Power Tubes: 4 × 5881
Tone & Controls
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Channel Controls: Gain, Volume, Bass, Middle, Treble, Presence
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Global Controls / Features: Master Volume, Depth (“Deep”) Control, Bright Switch, Voicing Switch
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Independent LED Indicators: Channel active, Gain active, Boost engaged
Connectivity
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Speaker Outputs: 1 × 4-ohm, 1 × 8-ohm, 1 × 16-ohm selectable
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Effects Loop: Yes
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Footswitch Support: Yes
Construction & Components
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Chassis: Rugged steel with protective grilles
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Knobs / Hardware: Metal knobs
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Components: Individually spec’d and tested by Diamond
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Finish / Lighting: Signature green LED glow
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