Product Description
Achillies Zephyr 40 Head
Born for Texas Boogie. Built for Big Tone.
The Achillies Zephyr 40 Head is your gateway to the rich, soulful tones of the American South—bold, bluesy, and built to move air. At the heart of this amp is a pair of 6L6 power tubes driving a classic AB763 circuit, delivering 40 watts of harmonically rich, touch-sensitive tone with that unmistakable Texas-style growl and shimmering clean headroom.
Plug it into a Priam 1x15” cabinet and it opens up with a flood of thick lows, articulate highs, and that sweet midrange bloom—perfect for everything from gritty shuffle to scorching solo work.
Texas Inferno Mod (SRV-Inspired Upgrades):
For those chasing pure fire, the optional Texas Inferno package pushes the Zephyr 40 even further.
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Solid-state rectifier for added punch and faster response
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High-output transformer for more headroom and low-end authority
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Optional second channel with Cesar Diaz-style mods, giving you rawer gain and hotter tone shaping
Signature Features (Standard):
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Signature Achillies Optocoupler Tremolo – delivering that deep, authentic 3D pulse pedals just can’t touch
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Tube-driven Spring Reverb
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Half-Power Switch – perfect for taming stage volume without sacrificing tone
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Buffered Effects Loop – seamless integration with your pedalboard
Crafted with Achillies' renowned attention to detail and handwired using silver Teflon-coated wire and USA-made custom transformers, the Zephyr 40 Head is made for players who live and breathe blues, soul, and classic American rock.
The Zephyr 40 doesn’t just sound like Texas—it feels like it.
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Overview Hand-wired circuitry throughout. Output Power: 40 Watts All-Tube Spring Reverb and Photocell Tremolo - Foot-switchable Traditional Dovetail Joinery Cabinetry Hand Signed Certificate with Production Number.
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Standard Features Cloth Covered Solid Core Wiring Throughout Custom Wound U.S.A Transformers Output Tubes: 2x 6L6 Preamp Tubes: 2x 12AT7, 1x 12AX7, 3x 7025 Rectifier: 1x GZ34 External Switching RCA Jack- Foot switch Included Cabinet Material - Premium Select Pine, Birch ply panels Voicing - Left Channel Clean - Overdrive, Right Channel Clean - Overdrive with Reverb and Tremolo Black Bronco Tolex covering with optional colours available, Please see our custom options page Aluminium Silk Screen Control Panels 64 x 27 x 25cm (24-3/4" x 10-1/2” x 10”) 16kg (35lb)
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Electronics FR4 Eyelet Boards to tolerate heat and noise Accutronics Spring Reverb Tank Optional Line Voltage with wall plug ready for your country Speaker Output Impedance 4Ω, 8Ω, 16Ω Extension speaker output jack wired in parallel 2 channels - Two Inputs per channel Hi and Lo Jacks Hand Made True Photocell Tremolo - by Achillies Channel Controls - Left Channel - Bright Switch, Volume, Treble, Bass. Right Channel - Bright Switch, Volume, Treble, Bass, Reverb, Speed, Intensity Adjustable Fixed Bias Brass Ground Plate All Tube Reverb and Tremolo Circuitry Achillies Black Gold Capacitors (Made in Germany) Sprague Orange Drop Capacitors
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Optional Features Head and Combo Available A wide selection of tolex covering, grille cloths, and handle colours are available; for a complete list of all the possibilities, please see our customs options page. Organic True Bypass Series Effects Loop. No passive components involved so your tone remains the same. Half Power output option. The switch is hidden from view beneath the chassis, in between the tubes. With this setting, the amp's power consumption is reduced by 40%. Reverb and Tremolo modification available to both channels Texas Inferno Mod: Increases the amplifiers gain into early overdrive on the Volume knob and high gain saturation when pushed to the limit. Output Transformer Upgrade: Provides richer depth response, stronger attack, and improved tone clarity. Rectifier Solid State Switch when engaged bypasses the tube rectifier and results in tighter bottom end with a more noticeable response. This mod is only available with the output transformer upgrade.
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