• Country
• Spain

• Manufacturer / Brand
• Optimus; Gerona

• Year
• 1990–1997

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 171035

• • alternative name: Pla Hermanos y Cía

• Number of Transistors
• 61

• Semiconductors
• unknown_tr CD4066 NE5534

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Line / Storage batteries (perhaps also batteries) / 220 / DC 24 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Programmable Preamplifier PM-603 - Optimus; Gerona

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 430 x 95 x 265 mm / 16.9 x 3.7 x 10.4 inch

• Notes
• Optimus Programmable & Electronic Modular Preamplifier PM-603;
  Combination of a routing matrix and preamplifier.
  6 inputs and 6 outputs, each channel can be programmed/routed to each output.
  Each channel has volume level, treble and bass controls.
  Inputs switchable to AUX H (0 dBV), AUX L (-20 dBV) or MIC (-62 dBV) level.
  High impedance (100 kΩ) or low impedance (2 kΩ).
  Symmetrical (with transformers) or asymmetrical connections.
  Can be powered from AC mains or external DC 24 volts source.

• Net weight (2.2 lb = 1 kg)
• 2.2 kg / 4 lb 13.5 oz (4.846 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Karl Reiter. See "Data change" for further contributors.

• Other Models

• Here you find 197 models, 131 with images and 98 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Optimus; Gerona