Secondhand dbx Quad Compressor / Limiter - Part # DBX1046-EUdbx 1046 Quad Compressor Limiter Unit. Item No. DBX231SV AU, DBX231S. Preloved dbx quad compressor limiter unit. This item was used for approximately 3 months for a band that I accepted a mixing job with but subsequently split up. It would have done no more than 10 gigs in my care. Description: In today's recording and sound reinforcement environments, the need for multiple channels of high quality, easy to use compression is growing rapidly. The new