White 4220 Passive Inductor Cut-Only Equaliser


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Single-channel cut-only equaliser from EQ specialists White. The 4220 is a very rare passive EQ with. It has nine EQ bands at octave centres from 63 Hz to 16 kHz

This is a passive (unpowered) EQ with the most minimal signal path I’ve ever seen – it has nine LCR filters in series and that’s it. Inputs & outputs are on jack sockets & terminal strip and there’s provision for a plugin band-splitting filter on the back panel

In use the 4220 is as smooth and as buttery as you might imagine from such a simple equaliser. The lack of boost forces you to work with cuts only and work strategically

Single-channel passive inductor equaliser. Nine EQ bands at octave centres from 63 Hz to 16 kHz plus in / out switch. Unbalanced inputs & outputs on jack sockets and terminal strip. Socket for optional band-splitting filter
Standard rack-mounted device. Shallow depth
Owners Manual


Excellent vintage condition with minimal marks. Tested & working 100%