Got bass? – If you owned sealed Rogers LS3/5A, you hadn't; until now. Hello AB3a [£3'499], an active sub stand that bolts on two mass-loaded woofers driven by 50 watts to each channel then gives user control over their gain, low-pass filter and phase. The standard finish for this add-on product is black as shown. Voilà, LS3/5A with proper bass.
