BTA 400 Hybrid Bass Head

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BTA 400 Hybrid Bass Head

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A 400W hybrid head with enough range for any application.

Combining straightforward rotary tone controls with two pairs of additional EQ sliders for the more sonically sophisticated, Ashdown' ABM preamp became an instant classic when it hit the bass world over a decade ago.

The BTA 400 (Big Tube Head) partners a third-generation ABM preamp with a 400-Watt, 8 x KT88 tube 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 a range of Ashdown US Series cabinets.

Features

400W Power output
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

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BTA 400 Hybrid Bass Head Specifications:

-3dB at 17Hz and 30kHz Frequency response
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
Dimensions (W x H x D): 24" x 14.3" x 11.8"
Weight: 77.2 lb.

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