Quad 33 Pre-Amplifier, FM-3 Tuner and 303 Amplifier with manualsStarted after WWII and under the direction of Peter Walker, Quad introduced their first amplifier, the Quad 1, and subsequently in 1953, the Quad 2. Quad introduced their first transistor amplifier unit in 1967 and that is where the Quad 303 and 33 enter the picture. Front View: Quad 33 Pre-Amplifier and FM-3 TunerQuad 33 Control UnitThe Quad 33 Control Unit features a Radio 1, Radio 2 (AUX), Disc (phono everywhere else on the planet), and 2 Tape inputs (one for record/play and one for playback only). Quad 33 Pre-Amplifier, FM-3 Tuner and 303 AmplifierQuad 303 AmplifierThe Quad 303 is rated at a very respectable 45 watts per channel into 8 ohms making this very easy to pair with speakers of the time. Rear View: Quad 33 Pre-Amplifier and FM-3 TunerOne area where the Quad 303 and 33 truly shine is when you adjust the sound to conversation levels with better recordings.