Truvox R92 (Series 90)

Half-track mono model from the Series 90 range covering quarter- and half-track, mono and stereo variants. Valve electronics (EF86, ECC81, ECC83, ECC82 oscillator, ECL86) with a metal rectifier, driving a 4-watt output stage into an 8x5 inch high-flux hyperbolic speaker on the R92/R94 versions. Shared features across the range include piano-key transport, a cathode-follower output, recording level meter, positive-lock reel carriers, a 4-digit counter, hinged editing panel, input mixing, sound-on-sound recording, three speeds and a three-motor drive with a Papst capstan motor.