ER-110 Eurorack Stereo Parametric Equalizer

€ 500

ARREL Audio ER-110 Eurorack Stereo Equalizer is the answer to all stream creative needs for EURORACK synthesizers and it is the natural complement to the ER-100 mixer. The two units together constitutes the best answer to high fidelity mixing ed equalizing in the Eurorack world. Its features set it apart from other similar products on the market due to a very high fidelity approach used for the design of the electronics together with the use of high quality components.

The internal circuits of the ER-110 have been directly derived from the ARREL Audio professional units in order to obtain maximum sonic performances. The unit has been designed to comply with the demands of professional musicians.

The ER-110 is characterized by high reliability, rugged design, outstanding audio quality, versatility and ease and 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 parametric filter is bell shaped filter, with continuous control of the central frequency, two bands can be selected [22Hz - 700Hz], [650Hz, 20KHz]. The Q factor can be selected (3 positions) as the narrow, mid and large. The emphasis/de-emphasis control range is ±12 dB. The HI and LO are BAX shelving filters have can implement two shelving frequency responses (2 position push button) with a emphasis/de-emphasis control range of ±12 dB. A bypass button for a true analog by-pass function (LED) is provided. ER-110 is is one of the models that ARREL Audio conceived for the Eurorack series (the other models are ER-100, ER-130) in order to give to the user the best choice for its application. ARREL Audio products are designed and manufactured in Italy.

Number of Channels: 2 ER-110 is a stereo unit
Power Supply ± 12 VDC
Power Consumption +12 VDC 50 mA, -12 VDC 40 mA
Input Stereo Unbalanced, Impedance 10KΩ, Input Level 0 dBu, Max +20 dBu.
Output Stereo Unbalanced, Level 0 dBu, Max +20 dBu, Output Impedance 100 Ω
Bandwidth 5 - 60.000 Hz -1dB, perfect square wave up to 20 KHz
Distortion + Noise <0.005% ( typical 0.001%).
Front Panel Controls True By-Pass button (LED), Gain (Emphasis/De-Emphasis) pot control, Range ± 12 dB with center detect (3 controls, two for the BAX sections for the parametric section), Central Frequency: pot control (for the parametric section) Frequency band control: two positions push button (22-700Hz, 650, 20KHz) Q control: three positions switch (narrow , medium, large (Parametric section), Shelving shape control (LO and HI) (2 shapes).
Frequency Bands LO: Shelf BAX Shape, two position switch (two shapes), PARAMETRIC: Bell Shape, 20/700 Hz , 650/20000 Hz HI: Shelf BAX Shape, two position switch (two shapes).
Front Panel Connectors Input L/R 3.5 mm jack connectors, Output L/R 3.5 mm jack connectors
Front Panel Indicators BY-PASS LED
Rear Panel Connectors Eurorack power supply connector
Construction 10 HP Units
Dimensions W 142 mm, H 128 mm
Weight 500 g

    ER-110 Key-Technologies


    Large Bandwidth (LB) means a very fast transient response able to represent the original sound with the maximum temporal resolution. LB is required to improve the perception of a “real sound” and to represent the details of the original sound.

    Large bandwidth plus very low total harmonic distortion means a perfect square wave reproduction.

    Ultra Low Noise (ULN) active and passive components and ULN design techniques. This requirement is especially important when the audio bandwidth is large as in the case of ARREL Audio products.

    High Dynamic Range (HDR) means that the saturation probability of the output stages is very low. This is obtained by using a step up transformer in the output stage.

    Electro-mechanical tolerance means that electromechanical components are doubled in every situation in which maximum reliability it is important due to a frequent use (switches, push buttons, potentiometers).

    Through Hole technology means the maximum reliability in terms of thermal and mechanical stresses especially for connectors and electromechanical components.

    FAQ 1: Why the ER-110 is not provided of a Control Voltage (CV) input ?

    1. The ARREL Audio ER-110 has been conceived as a very high quality stereo equalizer for the Eurorack world. It has not been conceived as a "creative" equalizer.
    2. The ARREL Audio mission in the Eurorack world is to give to the professional user the best audio "total quality" and manufacturing quality.