The ENGL E633 is an all tube 2 channel head that's as hot as a fireball and is perfect for any style of music. It features 8 control options with a Mid Boost and a tube buffered FX Loop.
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Don’t sell your soul to a creditor to get the gear you need. At AMS, we want to lower the barriers to create. That’s why we offer in-house 0% financing, and you don’t even have to open a new line of credit! Spread out payments on your credit card to simplify financing and avoid hefty late fees or service charges. Cost shouldn’t interfere with your creativity.
The ENGL E633 Fireball 25 is like a younger sibling to the legendary Fireball 100 — equally powerful but far more neighbor-friendly. This German-engineered monster delivers everything from shimmering cleans to face-melting high gain in a compact, 25-watt package. Whether you're chasing the glassy chime of indie rock or the crushing distortion of modern metal, this two-channel tube head has the tonal firepower to match your ambitions.
From Sparkle to Sizzle
The Fireball 25 isn't just a one-trick pony; it’s a tonal chameleon. The Clean channel offers crystalline clarity perfect for jazz, smoothly transitioning into a warm, chimey crunch as you push the gain. Switch over to the Lead channel, and you’re plunged into full-throttle rock and metal territory, with seemingly endless reserves of tube-driven gain. It’s like having two distinct amps in one compact, back-friendly head.
Dual-Channel Versatility: The Clean channel delivers everything from sparkling cleans to overdriven crunch, while the Lead channel picks up where it left off with crushing high-gain tones perfect for modern rock and metal.
6L6GC Power Tubes: Borrowing the same power section as its bigger brother, the Fireball 100, this amp delivers serious punch and headroom that belies its 25-watt rating — plenty of muscle for stage and studio work.
Built-In Noise Gate: Tame the inevitable hiss and hum that comes with extreme gain settings. The adjustable threshold keeps your tone tight and focused, even when you're cranking the distortion to eleven.
Cut Through Any Mix
Ever get buried in the band mix during a solo? The Fireball 25 has your back. The switchable Mid Boost function instantly pushes your sound forward, giving you the presence and cut you need to claim your moment in the spotlight. And when you need to dial things back for late-night practice sessions or apartment-friendly recording, the Power Soak feature lets you push those tubes into sweet saturation at whisper-quiet volumes.
Switchable Mid Boost: Available on both channels, this feature adds a focused midrange bump that helps your solos cut through dense mixes without sounding harsh or shrill.
Power Soak with Four Settings: Choose from Full (25W), 5W, 1W, or Speaker Off modes to get power tube saturation at any volume — perfect for capturing that cranked-amp sound without angering your neighbors.
Master Volume Boost (M.V.B.): Need an instant level jump for solos? The footswitchable Master Volume Boost gives you that extra kick without changing your carefully dialed-in tone.
Practicality Meets Power
The Fireball 25 isn't just about killer tone — it's built to survive the rigors of gigging and recording. The tube-buffered effects loop keeps your time-based effects pristine, while the direct line output (at 0 dB) makes silent recording and direct-to-interface setups a breeze. Add in flexible speaker impedance matching and compatibility with the ENGL Z4 footswitch, and you've got a professional-grade amp that's ready for anything.
Tube-Buffered FX Loop: Keep your delays, reverbs, and modulation effects sounding lush and dimensional with a true tube-buffered send/return loop that maintains signal integrity.
Flexible Connectivity: Multiple speaker outputs (1x 8-16Ω or 2x 16Ω parallel) plus a 0 dB line output for direct recording or running through IR loaders and DAWs without additional gear.
Z4 Footswitch Compatible: Control channel switching, Mid Boost, FX Loop bypass, and Master Volume Boost remotely with the optional ENGL Z4 four-button footswitch (sold separately).
Go Ahead, Start a Fire
The ENGL E633 Fireball 25 delivers exceptional tone without the hassle of heavy, bulky gear. Powered by 6L6 tubes, this compact, German-made amp features a versatile two-channel design, along with practical features like a Power Soak and built-in Noise Gate. Whether you’re in the studio or on stage, it provides professional-quality sound in a portable, lightweight package — ideal for players who prioritize great tone and convenience.
ENGL E633 Fireball 25 Features:
25-watt all-tube head with 2 channels (Clean and Lead)
Four ECC83/12AX7 preamp tubes and two 6L6GC power tubes
Built-in adjustable Noise Gate for high-gain clarity
Switchable Mid Boost function on both channels
Power Soak with four settings: Full (25W), 5W, 1W, and Speaker Off
Tube-buffered effects loop for pristine time-based effects
Master Volume Boost (M.V.B.) for instant level jumps
Line output (0 dB) for silent recording and direct interface connection
Flexible speaker outputs: 1x 8-16Ω or 2x 16Ω parallel
Compatible with ENGL Z4 footswitch for remote control (sold separately)
