Two direction taperun, three engi-nes, one based on the Hall principle (keeps its own speed constant by detecting turning speed), double flywheels, speeds 4,75, 9,5 en 19 cm/sec., also widerange variable (pitch). Six heads. Echo in stereo, playback left to right and vice versa. Inputs phono, tuner, tape, microphone with sliders and a linemixer with gain, pan. Outputs for tape out, headphone, monitor, mix. Tape-tension sensors, variable wind-speed, cueing in both directions. Counter with autostop, auto-reverse at tape end. Lighted analog VU meters, lighted tiptouch taperun-buttons, lighted functionsettings. Clear acrylic cover for 26 cm. (10,4 inch) reels, horizontal or vertical operation. Weight about 20 kg., undamaged. Tuned for Basf mastertape 911. The Philips N 4450 needs power-voltage at the walloutlet from 50/60 Hz. at 110, 127, 220, or 240 volts. No earthing needed at the plug. A neonlamp in the backpanel shows if the N 4450 is connected to the walloutlet.