IGS AUDIO 825EQ — Equalizer
IGS AUDIO 825EQ — Equalizer
IGS Audio 825EQ is a stereo tube mastering equalizer in a 3U, 19-inch rackmount chassis. IGS describes it as a mastering EQ with all stepped 24-pole ELMA switch controls, UTM transformer-balanced inputs and outputs, three audio transformers per channel, and three ECC88-family tubes per channel.
Specifications
Format and Controls
| Processor type | Stereo tube mastering equalizer |
|---|---|
| Rack format | 3U, 19-inch rackmount |
| Controls | All stepped 24-pole ELMA switches |
| Q factor | Proportional, 0.3 to 6 |
| Boost cut range | +/-6 dB or +/-12 dB by order/configuration; max gain listed as +/-12 dB each band |
Circuit and I/O
| Tube set | 6 x ECC88, E88CC, 6N23P or 6N1P-EV; three tubes per channel |
|---|---|
| Input transformer | UTM2546 transformer-balanced XLR input |
| Interstage transformer | UTM3525 gapped interstage transformers |
| Input impedance | 10 k ohms balanced |
| Output impedance | 600 ohms balanced |
| Bypass | No hard-wire bypass; signal still passes through transformers and tubes |
Performance and Power
| Operating level | +4 dBu |
|---|---|
| Max input level | +22 dBu |
| Max output level | +26 dBu |
| Frequency response | 10 Hz to 50 kHz ±0.4 dB |
| Dynamic range | >112 dB at 1 kHz, +24 dBu |
| Power | 115/230 V, 50/60 Hz; 45 W internal linear power supply |
Fit and constraints
Intended use
Constraints
To use it
Questions
What exact dimensions, mounting pattern, and model compatibility does this part support?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Is all required mounting hardware included?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Does installation require routing, drilling, soldering, or other irreversible work?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Description
IGS Audio 825EQ is a stereo tube mastering equalizer in a 3U, 19-inch rackmount chassis. IGS describes it as a mastering EQ with all stepped 24-pole ELMA switch controls, UTM transformer-balanced inputs and outputs, three audio transformers per channel, and three ECC88-family tubes per channel. The equalizer uses proportional Q variable from 0.3 to 6 and is available or configured with ±6 dB or ±12 dB boost/cut range; IGS lists ±12 dB each band as maximum gain. Technical specifications include balanced XLR 10 k ohm input impedance, 600 ohm balanced XLR output impedance, +4 dBu operating level, +22 dBu maximum input, +26 dBu maximum output, 10 Hz-50 kHz frequency response within ±0.4 dB, dynamic range greater than 112 dB at 1 kHz/+24 dBu, 102 dB SNR and <0.049% THD+N.