Wavetek Filter Set

Filter sets like these are common in labs & universities. Built to a standard way above studio gear, these are switchable high- or low-pass filters with a decade-based frequency selection

There are two separate channels, each with a two-digit frequency selector and a 10 / 100 / 1k / 10k multiplier switch. There is also a 20 dB gain switch and a flat amplitude / flat delay switch that determines the response at the corner frequency. In our hands this becomes a “do I prefer how it sounds this way.. or that?” switch

I’ve fitted XLRs to the back panel, switched it to 220 Volts and recapped the power supply. This filter set is ready for use – photos show the item for sale

Wavtetek Model 442 Filter Set