ENGL Fireball 100 Head

Tube Amp Head with High Output, Designed for Metal

The ENGL Fireball 100 E635 is a two-channel tube amplifier head developed for guitarists in heavier music genres. Equipped with 6L6GC power tubes, it delivers a powerful and controlled sound with clear definition. The Clean channel provides both clean and mildly overdriven tones depending on the gain setting, while the Lead channel is tailored for high-gain playing and defined metal riffs. A built-in Mid Boost and Noise Gate make it particularly well-suited for genre-specific tones without the need for external distortion pedals.

Two Channels – Wide Tonal Range

The Fireball 100 features a Clean channel that also works well for crunch tones when using higher gain settings. The Lead channel is designed to produce deep distortion with maintained clarity. Both channels include independent gain controls and share a common 3-band EQ.

Functions for Stage and Studio

The amp includes a tube-buffered effects loop with balance control, Master A/B functionality, and Bright, Bottom, and Mid Boost modes. It is compatible with ENGL’s Z4 footswitch for channel switching and control of additional features.

Specifications

Type: Tube amplifier head

Channels: Clean, Lead

Effects Loop: Tube-buffered, with balance control

Additional Features: Noise Gate, Master A/B, Power Tube Monitor

Sound Options: Bright, Bottom, Mid Boost

Controls:

• Gain (per channel)
• 3-Band EQ
• Lead Volume
• Master A
• Master B
• Presence
• Noise Gate Threshold
• FX Loop Balance

Outputs:

• Speaker outputs: 1×4 Ω, 1×8 Ω, 1×16 Ω, 2×8 Ω (parallel), 2×16 Ω (parallel)
• Footswitch: Z4 (channels, Master A/B, Mid Boost, FX Loop)

Tube Configuration:

• Preamp: 4 × ECC83 / 12AX7
• Power amp: 4 × 6L6GC
• Output Power: 100 W
• Dimensions: 71 × 27 × 27 cm
• Weight: 21 kg