Vox 1970 full line catalog, page 13. Details of the Riviera 400 organ.
A revolutionary new instrument which gives you every conceivable combination of voice, tone and electronic effects. The Riviera has integrated circuit tone generators. Dual manual keyboards. 8 harmonic drawbars to each key-board. And a range of voicings which include piano, vibes and 3 additive tabs. Special effects include sustained voicings which can be used independently or in conjunction with the upper manual keyboard and an Electronic Gyrotone effect. Two 12" heavy-duty speakers are built-in, and amplification is a massive 100 watts. An extension socket for Gyrotone speakers automatically cuts out the internal speakers. The possibilities are limitless. Here, in an attractive walnut cabinet is perhaps the most complete musical instrument you could ever own.