These are the OLi 4 floorstanders, new from Roth Audio. The speakers combine twin 17cm woven fibreglass hybrid woofers & a 25mm soft-dome tweeter, stand almost a metre tall & are of a two-&-a-half-way design. The speaker is designed for high rigidity, & uses the company's DALtech technology, the acronym standing for ' Dead as Lead'. This aims to aims to eliminate distortion – caused by the speaker's own energy – with the strategic placement of acoustic damping within the cabinet. The sensitivity is 91d B/W/m, the impedance 8ohms & maximum power handling is 200W. The speakers are finished in black & silver, with a gloss base and matching top panel.