Ashdown ABM-600 EVO IV: The Definitive 600 Watt Bass Amp Head

Unrivaled Power. Unmistakable Tone.

When the stage demands maximum authority, the Ashdown ABM-600 EVO IV delivers.

This amp head provides 600 watts of crushing power while offering the most advanced tonal toolkit in the Ashdown lineup.

It’s the essential professional bass amp for players who require maximum volume, tonal flexibility, and absolute reliability.

If you are a touring or session bassist searching for a 600 watt bass amp head that can flawlessly drive multiple cabinets and cut through any large-venue mix, the Ashdown ABM head is your ultimate foundation.

Ultimate Stage Control and Hybrid Warmth

This 600W bass head provides the features that professionals rely on for precision and sonic character.

Crushing Power and Dynamic Control

• Massive Output: Delivering 600 watts of raw, reliable power, this is a true professional bass amp. It effortlessly handles large cabinet setups (down to a 4-ohm minimum impedance), ensuring you have limitless clean headroom and volume.
• Variable Valve Drive Plus: The 12AX7 tube in the preamp is the secret to its warmth. This foot-switchable feature allows you to blend genuine valve harmonics—from subtle tube saturation to thick, musical overdrive—into your signal.
• Sub-Harmonic Generator: Engage this signature ABM tool to add a precisely tracked octave below your played note, instantly delivering thunderous, controlled depth to your low end.

Surgical EQ and Performance Tools

• 9-Band Precision EQ: The heart of this 600 watt bass amp head is its advanced EQ. Beyond the familiar Bass, Middle, and Treble knobs, the 6-band slider section offers surgical control over crucial mid-range frequencies, enabling you to dial in your tone for any venue's acoustics.
• One Knob Compressor: Ashdown's renowned, simple One Knob Compressor provides instant, transparent dynamic control, ensuring your tone remains tight and consistent even at high stage volumes.
• Illuminated VU Meter: The iconic, oversized, illuminated metering provides quick and accurate gain staging, allowing you to find the preamp's sweet spot instantly.

Professional Connectivity

The Ashdown ABM head offers seamless integration for touring and recording:

• Flexible Cabinet Pairing: Features dual Neutrik Jack/Speakon outputs, providing secure and flexible connections for driving multiple cabinets.
• Clean Signal Output: The high-quality DI Output (balanced) ensures your signal—clean or affected—is sent noise-free to the FOH desk or studio recorder.
• Full I/O: Includes an FX Loop (Send/Return) for pedal racks and a dedicated Tuner Output with muting for silent on-stage tuning.

Technical Specs Summary

Command the Low End

When your tone is your reputation, choose the head built to back you up. The Ashdown UK ABM-600 EVO IV is the essential professional bass amp for players who demand the best.

Elevate your rig with the ultimate 600 watt bass amp head. Order your Ashdown ABM head today!