The ABM 500RC EVO II delivers high-powered tone with plenty of tools to shape it.

The ABM 500RC EVO II is a 575W RMS rackmountable bass amp head designed to satisfy both bass purists and tech-heads alike. Three rotary tone controls provide 20dB of cut and boost at 60Hz, 660Hz, and 5kHz, and are supplemented by two pairs of additional sliders giving 15dB cut and boost at 180Hz, 340Hz, 1.3kHz, and 2.6kHz. The EQ can be switched on/off and flat/shaped by footswitch, enabling you to go from a flat fretless sound to a boosted sound with ease. The single input is switchable for passive and active instruments. A blend of solid state and dual-triode tube preamp stages can be preset and selected by footswitch, providing access to a massive range of clean, warm, and overdriven tones.

The footswitchable subharmonic generator precisely tracks the main signal and reproduces it an octave lower. A subharmonic level control lets you add just the right amount of low-end reinforcement-everything from a subtle thickening of the sound to unbridled, bone-crushing tone.

The ABM 500 EVO II also features a front panel-mounted balanced direct out with pre- or post-EQ switching, a sub-bass output, tuner output, FX loop, and a line input for connecting an external sampler or sound source. Output muting cuts the signal from the direct out but leaves the tuner output live, allowing silent tuning. The upgraded power section has faster transient attack, more headroom, and even less noise.

Ashdown ABM 500RC EVO II Rackmount Bass Amp Head Specifications:

• Power Output: 575W
• High Instrument Input: Impedance 3.9mOhm, input range 150mV - 20mV p-p
• Low Instrument Input: Impedance 10kOhm, input range 300mV - 40V p-p
• Stereo Line Input: Impedance 22kOhm, input level 0dBu nominal
• Effects Return: Impedance 22kOhm, input level 0dBu Nominal
• Tuner Output: Impedance 22kOhm, level 0dBu nominal
• Sub Output: Impedance 1kOhm, level 0dBu Nominal
• Effects Send: Impedance 22kOhm, level 0dBu nominal
• DI Output: 600 ohm balanced, level 0dBu nominal
• Speaker Outputs: Minimum impedance 4 ohm
• Shape (Push Flat): +8dB @ 50Hz and 4kHz, -8dB @ 400Hz, filter slope - 6dB/octave
• Bass: ±15dB @ 45Hz
• Middle: ±15dB @ 660Hz
• Treble: ±15dB @ 7kHz shelving
• Slider 1: ±15dB @ 180Hz
• Slider 2: ±15dB @ 340Hz
• Slider 3: ±15dB @ 1.3kHz
• Slider 4: ±15dB @ 2.6kHz
• Frequency Response: -3dB at 17Hz and 30kHz
• Power Requirements: 230/115V
• 20-7/10"W x 7-7/10"H x 12-4/5"D
• 31 lbs.
• Power Output: 575W
• High Instrument Input: Impedance 3.9mOhm, input range 150mV - 20mV p-p
• Low Instrument Input: Impedance 10kOhm, input range 300mV-40V p-p
• Stereo Line Input: Impedance 22kOhm, input level 0dBu nominal
• Effects Return: Impedance 22kOhm, input level 0dBu Nominal
• Tuner Output: Impedance 22kOhm, level 0dBu nominal
• Sub Output: Impedance 1kOhm, level 0dBu Nominal
• Effects Send: Impedance 22kOhm, level 0dBu nominal
• DI Output: 600 ohm balanced, level 0dBu nominal
• Speaker Outputs: Minimum impedance 4 ohm
• Shape (Push Flat): +8dB @ 50Hz and 4kHz, -8dB @ 400Hz, filter slope - 6dB/octave
• Bass: ±15dB @ 45Hz
• Middle: ±15dB @ 660Hz
• Treble: ±15dB @ 7kHz shelving
• Slider 1: ±15dB @ 180Hz
• Slider 2: ±15dB @ 340Hz
• Slider 3: ±15dB @ 1.3kHz
• Slider 4: ±15dB @ 2.6kHz
• Frequency Response: -3dB at 17Hz and 30kHz
• Power Requirements: 230/115V
• 21"W x 8"H x 12-3/4"D
• 31 lbs.

Ashdown ABM 500RC EVO II Rackmount Bass Amp Head Features:

• 575W RMS
• 7-band EQ
• Switchable active/passive input
• Tube/solid state preamp stages
• Subharmonic generator adds low-end reinforcement
• Front-mounted direct output with pre- and post-EQ switching
• FX loop
• Tuner output
• Line in

Serious power and tone for the most demanding bassists. Call or click to buy now!