With all the experience in acoustics, dynamic control and sound design AER reaches out into the field of professional bass amplification and launches the AER Bottom Line series.

The concept: a small, light-weight two channel class d integrated amplifier that covers the range from Anglo-saxon ‘punch’ to european ‘hifi ’ orientated sounds. Head one can be used in three operational modes: 2 channel full-range mode, 2-way active mode and bridge-mode in combination with Cab one, Cab two or Cab three. It is equipped with ‘tube emulation’ for ‘drive’ sounds, two independent EQs, ‘colour-switch’ and ‘tone lever’. Class d amps are getting more popular as besides efficiency they can be made so surprisingly small and light. Besides these benefits they inherit a lot of problems (noise, distortion, cut-off ) especially if they are used in ‘limit mode’. Their overall performance is extremely dependent on the design and the smart use of controls and protections to guarantee proper functionality.  AER has done just that with this top of the line amplifier.

Model: Head one (HD1)
Single-input, class d integrated bass amplifier
Input (clean): 6.3 mm (1/4“) input jack socket as
high-end line input stage
Drive: tube emulation with
gain 2 as drive control
Harmonics: blend between even and uneven
harmonics and tone to adjust the high
frequency level of drive stage
Mix: blend clean (gain 1) and drive (gain 2)
EQ: two independent four band-EQs allows
two different ‘presets‘ to be addressed
by (foot)switch
EQ 1: bass +/- 9 dB @ 45 Hz
low mid +/- 9 dB @ 240 Hz
high mid +/- 9 dB @ 880 Hz
treble +/- 9 dB @ 7,2 kHz
EQ 2: bass +/- 9 dB @ 45 Hz
low mid +/- 9 dB @ 420 Hz
high mid +/- 9 dB @ 880 Hz
treble +/- 9 dB @ 7,2 kHz
Colour-switch: ‘mid-cut-treble-boost‘- filter for EQ 1 and 2
Tone: the tone balance enables the bass- or treble
emphasis or a combination of both
Power amp: 2 channel class d, dynamic control,
HF out: 275 W/4 ohm
LF out: 275 W/4 ohm
bridge mode: 550 W/8 ohm
Features: adjustable DI-out and switchable pre/post EQ,
tuner- , line-out, effect loop,
footswitch 1: channel select, harmonics on/off
footswitch 2: effect on/off , solo/ensemble
Accessories: padded gigbag
Dimensions: 88 mm x 366 mm x 306 mm
(3.46“ x 14.41“x 12.05“), HxWxD
Weight: 6 kg (13.23 lbs)