Ashdown Rootmaster EVO III 800 Bass Head

Ashdown RM-800-EVO III – 800W Lightweight Bass Amplifier Head

The Ashdown RM-800-EVO III (Rootmaster 800 EVO III) delivers 800 watts of legendary Ashdown tone in a compact, lightweight, and road-ready package. Built for modern bassists who demand flexibility and power, it’s perfect for both stage and studio use.

Lightweight Powerhouse

Weighing just 2.5kg, the RM-800-EVO III offers heavyweight tone in a portable format. Its 800W output ensures enough volume and headroom for any live situation, while its rugged design makes it durable enough for touring.

Advanced Tone-Shaping Tools

• Valve Emulated Drive – authentic tube-style warmth and grit

• Sub Harmonic Generator – adds octave depth for massive bass presence

• One-Knob Compressor – smooth, even dynamics with a single control

• 5-Band EQ – with additional shaping at 100Hz, 340Hz, 660Hz, 1.6kHz, and 7kHz

Analogue Cab Sim DI – Modern Flexibility

The addition of an Analogue Cab Sim DI output makes the RM-800-EVO III a future-ready amp head, designed for silent stages and in-ear monitoring setups. This DI faithfully emulates Ashdown’s legendary ABM cabinets, offering selectable cabinet voicings including 10” sealed/ported, 15” sealed/ported, and horn options – ensuring you always have the right sound for front-of-house or recording.

Professional Connectivity

• Inputs: High & Low Instrument Inputs, Line Input

• Outputs: 2 x Neutrik Speakon/Jack outputs, Balanced DI, Tuner Output

• Effects Loop: Send & Return for pedals and processors

• Impedance: Minimum 4Ω load for flexible cab pairing

Specifications

• Power Output: 800 Watts

• Weight: 2.5 kg

• Dimensions (H x W x D): 89 x 311 x 235 mm

• Frequency Response: -3dB @ 22Hz – 25kHz

• Inputs: High (3.9MΩ), Low (10kΩ), Line (22kΩ)

• DI Output: 420Ω balanced, level 0dBu nominal

• EQ Range: Bass ±15dB @100Hz, Low Mid ±15dB @340Hz, Middle ±15dB @660Hz, High Mid ±15dB @1.6kHz, Treble ±15dB @7kHz shelving

• Distortion: <0.5% THD

• Cabinet Sim Options: Ported/Sealed 10” & 15”, with Horn boost option

Why Choose the Ashdown RM-800-EVO III?

• Massive 800W output in a lightweight, 2.5kg head

• Cab Sim DI output with selectable cabinet emulations for modern stage & studio setups

• Ashdown’s classic tone-shaping tools – Drive, Compression, Sub Harmonics, EQ

• Global-ready power supply (115–230V) for touring musicians

• Rugged yet portable – designed for bassists on the move