Spectra 1964 STX 600 Complimiter Mic Preamp

500 Series Mic Preamp

CAP2: 0 £1,195.00
£995.83 ex VAT
in stock

The Spectra 1964 STX 600 is the latest addition to the Complimiter legacy, housed in an affordable 500 series format. Centred around the original 601 Complimiter circuit from 1969, renowned for being the fastest analogue compressor limiter, the STX 600 offers significant improvements in headroom, system noise reduction, and distortion. It shares the same circuit as the original 610 and newer models like the C610, 611, and V610. True to the Complimiter design, the STX 600 maintains the ultra-fast limiter/compressor performance in a compact module with an overall gain of 62dB, suitable for use as a microphone or line preamplifier. Notably versatile, the unit features switchable 48-volt phantom power and phase control, enhancing its functionality.

At a glance

  • Input impedance: 1200 Ohms
  • Output loading: 600 Ohms to infinity
  • Maximum gain: 62 dB
  • Input level: typically -50 dBu to +10 dBu
  • Maximum output: +18 dBm @600 Ohms
  • Threshold attack level: -40 dBu
  • Signal-to-noise: -80 dBu below +4 dBu output, -40 dBu input 20 Hz - 20 kHz unweighted
  • Frequency response: ±2 dB, 20 Hz - 20 kHz
  • Limiter attack time: Less than 90 Nanoseconds
  • Compressor attack time: 100 Nanoseconds to 1.2 Milliseconds
  • Total harmonic distortion: 0.03%, 30 Hz - 20 kHz, @+8 dBu
  • Power supply requirement: Less than 80 Milliamps @+18 dBu

The Spectra 1964 STX 600 represents the latest addition to Spectra 1964's extensive Complimiter legacy, encapsulated in an accessible 500 series format. At its core lies the renowned 601 Complimiter circuit, a timeless innovation introduced in 1969. As the fastest analogue compressor limiter available, the 601 circuit offers a significant headroom enhancement, along with reduced system noise and distortion. This identical circuit is used in the original 610, the recently unveiled C610, 611, and the esteemed V610.

Remaining true to the Complimiter design philosophy, the STX 600 incorporates the same 601 compressor limiter circuit found in the C610 and V610, delivering ultra-fast limiter/compressor performance in a compact and cost-effective 500 series module.

With an overall gain of 62dB, the STX 600 is versatile enough to function as both a microphone and line preamplifier. Additionally, the unit boasts switchable 48-volt phantom power and phase control, enhancing its adaptability.

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