IGS Audio ONE LA 500

Two knobs of happiness The IGS ONE LA 500 is an opto-compressor built for the 500 series format. This is the first high voltage vacuum tube 500 series module that is offered by IGS. It is powered with 250V DC from an on-board voltage converter, so it can be plugged into any 500 series rack equipped with a standard power supply.

Every single ONE LA is hand made with high quality, matched components (1% metal film resistors, Wima caps). It is equipped with JJ tubes and individually calibrated to give you the unique and unspoiled experience of one of the best opto-compressors in the history - the Teletronix '68 LA-2A. We have spent hundreds of hours designing the ONE LA, to make sure that it is as simple to use as it is versatile. Not only for harmonically rich vocals and strings, but also for huge and beefy drums and bass instruments.

Using two ONE LA 500 as a stereo pair will allow you to use it as an excellent bus compressor!

There is something else Three audio transformers (Sowter and Edcor in audio path and OEP in sidechain) have been used to provide excellent performance and with only two knobs and a single compressor/limiter switch, there is nothing that could go wrong. Additionally, you can replace the photocell easily (special version available)

DEVICE TYPE:

Optical Compressor: Yes

BASIC FEATURES:

Stereo Link: Yes, for a custom order

Hard wire bypass: Yes

INPUT & OUTPUT:

Input Impedance (balanced): 600 ohm, Sowter transformer

Output Impedance (balanced): 600 ohm, Edcor (USA) transformer

Audio transformers: Yes, Sowter, Edcor, Carnhill (sidechain)

LEVELS:

Operating Level: +4 dBu

Max input level: +20 dBu

Max output level: +21 dBu

Dynamic Range: 100 dB

Noise Level: -99 dBA

Max. gain: 32 dB

Max Gain Reduction: 32d

TIME CONSTANTS:

Ratio: 4:1 in COMP mode, 100:1 in LIM mode

Attack: 10ms

Release: 0.5 - 5s (50% @ 60ms)

BANDWIDTH:

Frequency response: 8 Hz - 20k Hz, +/- 1 dB

DISTORTION (@ 20 HZ - 20 KHZ):

THD+N: 0.002% @ 0dBu

FRONT PANEL:

VU Meters Yes, GR (backlit)

POWER:

Voltage: API Standard, internal DC-DC conversion for powering tubes (250V DC)

Power consumption: 8W

PACKING BOX:

Shipping weight: 3 kg

OTHERS:

Tube set: ECC802, ECC803