2 Band Bax (Baxandall) Equalizer + LO-CUT and HI-CUT
R-504 is an advanced single-channel equalizer conceived to offer to the API 500 user the superior audio performance of the ARREL Audio high level series products. The unit offers to the 500 user high reliability, rugged design, outstanding audio quality, versatility and ease of use typical of the tradition of ARREL Audio products.
The R-504 equalizer is based on the Livio Agentini’ s "Single-Stage Parallel Configuration" patented design. This innovative phase coherent EQ design offers the lowest distortion/noise specifications, not available in other products.
The R-504 filtering section offers LO, HI Baxandall (BAX) filters with two switchable shapes. The Emphasis/De-Emphasis control range is +/-14 dB. The HI-CUT and LO-CUT filters are characterized by 12/dB Oct. slopes and variable cut-off frequency control.
Each filter section can be individually activated by a button (LED). A bypass button is used for a true analog by-pass function (LED).
R-504 is is one of the models of the serie of equalizer that ARREL Audio conceived for the 500 series (the other models are R-502, R-503, R-505) in order to give to the user the best choice for its application.
