Spectra 1964 STX600
- 500-series compressor/limiter module for studio and live use
- Original 601 Complimiter circuit for ultra-fast analog compression
- Dramatic improvement in headroom and reduced noise/distortion
- Input section supports limiter, limiter/compressor, or mild/moderate compression
- Output section for precise gain control and microphone-level adjustment
- Switchable phase and phantom power via top-mounted switches
- Dual indicator circuits for peak detection and output clipping visualization
- Durable, high-quality US construction with over 95% US/European components.
Product information "Spectra 1964 STX600"
The STX 600 is the latest addition to Spectra’s fifty-year Complimiter legacy, now available in an affordable 500-series format. At its core, the STX 600 features the original 601 Complimiter circuit introduced in 1969, renowned as the fastest analog compressor/limiter available. This design dramatically improves headroom while reducing system noise and distortion. The 601 circuit is the same trusted technology used in the original 610, as well as the modern C610, 611, and the venerable V610.
With an input section shared with the C610 and V610, the STX 600 allows quick setup for limiting, limiter/compressor, or mild to moderate compression. The output section provides precise gain control for compression compensation or microphone-level adjustment. Switchable phase and phantom power are easily accessible, and the input pad offers three settings (0dB, -10dB, -20dB). Fast and accurate setup is supported by two indicator circuits: an ultra-fast input threshold display shows sub-microsecond peaks and onset of compression, while the output indicator visually represents signal clipping (+18dBu). Built in the USA at Spectra’s Ogden facility with over 95% North American or European-sourced components, the STX 600 combines professional-grade performance with reliability and value.
Spectra 1964
Spectra 1964
860 W Riverdale Road, Suite D6 Riverdale, Utah 84405 United States
info@spectra1964.com
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, +/- 2 dB, 20 Hz – 20 kHz
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 mA @ +18 dBu
