IGS Audio Rubber Bands 500

Rubber Bands 500 is a passive equalizer absurdly reduced in size. This tiny module is equipped with transformer balancing on inputs and outputs (Carnhill) as well as a discrete power circuit. Of course the entire filtering section is passive and mirrors fully analogue equalizers from the 60s.
Front Panel:

– Potentiometers:

* HC (High Cut)
* HB (High Boost)
* Q
* HC (High Cut)
* HB (High Boost)

– Switches

* HC: 6, 10, 20 kHz;
* HB: 5, 6, 10, 12, 16 kHz;
* BBC: 20, 40 , 60, 100, 180, 240 Hz.

– EQ IN – relay Bypass

Technical specification.

– API 500 standard module
– Passive Equalizer
– Input impendance:1kΩ – Carnhill transformer balanced
– Output impendance:600kΩ – Carnhill transformer balanced
– Max input level: +20 dBu
– Max output level: +22 dBm
– Band amplification: +18 dB
– Harmonic distortion THD: up to 0,1%
– Frequency response: +/- 0.1 dB 20Hz do 20kHz
– Signal-noise: over 99 dB
– Power supply: +/- 16V
– Current consumption: 70mA
– Dimensions: (h*w*d) 132x37x158mm
– Mass: 900g.