The Vitavox S2 speaker driver. 73 (and a bit) years old today. "It's only right you see it in its birthday suit... The S2 1.5 Pressure Unit is a landmark product in the history of the British audio industry. The beautiful simplicity of its design has stood the test of time and it remains in production today, almost unchanged, more than 60 years after its conception."

"The original design brief was extraordinarily challenging: to combine the delicacy, clarity and linearity of response demanded by the most discerning audiophiles, with the durability, serviceability and flexibility required by public performance venues. So successful were the design team in meeting this brief, that examples from the very earliest days can be found in some of today's finest user-built systems, whilst current production pieces power some of the world's most renowned "statement" loudspeaker products."