300-watt Hybrid Bass Amplifier Head

The Ashdown BTA 300 hybrid bass amplifier head combines straight forward rotary tone controls with two pairs of additional EQ sliders for the more sonically sophisticated, Ashdown’s ABM preamp became an instant classic when it hit the bass world over a decade ago.

The BTA 300 (Big Tube Head) partners a third-generation ABM preamp with a 300-Watt, 6 x KT88 valve output stage for ABM sophistication with bone-crushing tube power. All the ABM features are there – EQ In/Out footswitching, variable Tube/Solid-State input stages, on-board compressor and Sub Harmonic Generator, ,balanced DI Output with Pre/Post EQ switching, FX loop, Tuner output and more. The BTA 400 partners perfectly with the range of Ashdown US Series cabinets.

Ashdown BTA 300 Specifications:

• Power Output: (RMS) 300W
• Power Requirement: 230 / 115V
• Frequency Response:  -3dB at 17Hz and 30kHz
• Speaker Outputs:  Minimum impedance 4 Ohms
• High Instrument Input:  Impedance 3.9m Ohms, input range 150mV -
• Low Instrument Input:  Impedance 10k Ohms, input range 300mV - 
• Line Input  Impedance: 22k Ohms, input level 0dBu nominal
  Sub Output:  Impedance 1k Ohms, level 0dBu Nominal
  DI Output:  600 Ohms balanced, level 0dBu nominal
  Tuner Output:  Impedance 22k Ohms, level 0dBu nominal
  EQ 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
  Shape (Push Flat) +8dB @ 50Hz & 4kHz, -8dB @ 400Hz, filter slope - 6dB/octave
• Effects Send:  Impedance 22k Ohms, level 0dBu nominal
  Effects Return:  Impedance 22k Ohms, input level 0dBu Nominal
  H x W x D: (mm) 362 x 610 x 300
  Weight: (kg) 33.55