Univox CLS-1 is a compact yet powerful loop amplifier for wireless listening through your hearing aid. CLS-1 is developed for maximum power, versatility and ease of use and is equipped with Univox automatic volume control (Dual Action AGC) for a smooth sound experience. The thumb wheel volume control with digits for easily memorised setting of the right field strength level along with bass and treble controls secures pure sound quality. The metal case offers effective cooling to ensure long lasting problem free use. This Kit includes a UK power supply. Other Kits with a Sofa Loop or Seat Loop Pad are also available.