IGS Rubber Bands 500
The IGS Rubber Bands 500 is a passive equalizer absurdly reduced in size. This tiny module is equipped with transformer balancing on input and output (Carnhill) as well as a discrete driver circuit. Of course the entire filtering section is passive and mirrors analogue equalizers from the 60s. There is separate frequency selector for low boost/cut sections. And you get the true bypass switch as a bonus!
| BASIC FEATURES | |
|---|---|
| Q factor | 0.5 – 4 |
| Hard wire bypass | Yes |
| Boost/Cut Range | +/- 15 dB |
| All stepped manipulators | Yes, Frequency selectors |
| INPUT & OUTPUT | |
|---|---|
| Input Impedance (balanced) | 1k ohm |
| Output Impedance (balanced) | 600 ohm |
| Audio transformers | Yes, Carnhill |
| LEVELS | |
|---|---|
| Operating Level | +4 dBu |
| Max input level | +20 dBu |
| Max output level | +22 dBu |
| Noise Level | -99 dBA |
| BANDWIDTH | |
|---|---|
| Frequency response | 5 Hz to 20k Hz, +/- 0.1 dB |
| DISTORTION (@ 20 HZ – 20 KHZ) | |
|---|---|
| THD+N | 0.012% |
| POWER | |
|---|---|
| Power consumption | 3.5W |
| PACKING BOX | |
|---|---|
| Shipping weight | 1kg |



