By using latest low-impedance digital amplifier chip technology the Techconnect Amp 2 module outputs a massive 2 x 20w RMS (at 8 ohms) but fits into the space of a Techconnect module. Attractive & discreet;the Vision wall speakers offer clear, powerful audio reinforcement in a compact form factor. The SP-1300 has a warm, well-rounded bass, with smooth high frequencies that extend beyond 20k Hz. Match these to a low-impedance amplifier & be amazed how big they sound!