Arrel Audio R-504

Baxandall (BAX) Bands + LO-CUT and HI-CUT

 744,00 ( 609,84 + VAT)

Out of Stock

  • Free Shipping
  • After Sale Support
  • 2 Years Warranty
  • Secure Payments

Out of Stock

Arrel Audio R-504

Baxandall (BAX) Bands + 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.


Technical Specifications

Number of Channels: 1
Power Supply +/- 16 V DC, very low power supply currents with respect to the API 500 standard
Power Consumption TBD
Line Input Elecronically Balanced,
Impedance 20KΩ,
Input Level +4dBu,
Max +20 dBu.
Output Level Electronically Balanced,
Level +4 dBu, Max +24 dBu,
Output Impedance 100 Ω
Bandwidth 5 – 150 KHz +/-1 dB, perfect square wave up to 20 KHz
Distortion + Noise <0.003% ( typical 0.001%).
Front Panel Controls True By-Pass button (LEDs) for the three filter sections (SHELF, HI-CUT, LO-CUT),
Shelf Gain (Emphasis/De-Emphasis) pot control, Range +/- 14 dB with center detect (2 controls),
Shelving shape control (LO and HI) switchable (2 shapes),
Cut-Off Frequency control for LO-CUT and HI-CUT(2 controls).
Frequency Bands LO: Shelf Shape, two position switch (two shapes),
HI: Shelf shape, two position switch (two shapes),
LO-CUT: 20/200 Hz, Slope 12 dB/Oct, Cut-Off frequency continuous control,
HI-CUT: 4000/16000 Hz, Slope 12 dB/Oct, Cut-Off frequency continuous control.
Rear Panel Input Connectors API 500 compatible connector
Construction Compliant 500-series rack with PSU and external audio connections,
Single 500-series rack slot required for each R-501 module.
Dimensions Standard API 500
Weight TBD kg.
Formato Hardware

500 Series


There are no reviews yet.

Be the first to review “Arrel Audio R-504”

Return and restocking option is available for private customers only. We will issue a refund/credit if you are not satisfied with your purchase and notify us within 10 days of product receipt. It must be returned in the original packaging and in saleable condition and must be returned freight prepaid. Return and restocking rights are not applicable for Audio/Video and software products. Shipping and handling charges to and from are not refundable.

Find out more in our departments

Start typing and press Enter to search

Shopping Cart