Price:
$3,850
*Check with our team or your local store for availability.
We guarantee that all of our stock is 100% genuine,
Australian sourced stock, with full local warranty.
Australian sourced stock, with full local warranty.
Description
- The A1 microphone pre-amplifier uses a discrete, class A design with a current-feedback amplifier architecture, delivering up to 60 dB of clean gain. It is transformer balanced on both the input and output, ensuring low noise, low distortion, and wide frequency bandwidth.
- The A1 features a unique, digitally-controlled de-esser designed for smooth and natural sibilance reduction. It uses a multiplying D/A converter running at 500 kHz sample rate as the variable gain element, allowing for precision control and reduced noise compared to traditional de-essing solutions.
- Equipped with Lundahl transformers on both the input and output, the A1 ensures high-quality signal transmission with minimal loss and color, suitable for any professional recording situation.
- The A1 includes a -24 dB pad for line-level sources, a low-cut filter adjustable to 40 or 80 Hz, and 48V phantom power. These features make it adaptable to various recording scenarios, whether using microphones or line-level sources.
- Two A1 modules can be side-chain linked for stereo operation of the de-esser, making it suitable for handling stereo recordings. The A1 is designed to fit into any API 500-series rack, ensuring compatibility with a wide range of professional audio setups.
| Weiss A1 Series 500 Mic Preamp and De-Esser Specifications | |
| Input Gain Range | +15 dB to +60 dB (3 dB steps) |
| Pad Attenuation | 24 dB |
| Output Gain Range | −∞ dB to +12 dB (continuous) |
| Maximum Input Level | +29.7 dBu (with pad on, for THD+N ≤ −80 dB) |
| Maximum Output Level | +27.0 dBu (for THD+N ≤ −80 dB, 100 kΩ load) |
| Input Impedance | 8.4 kΩ (with pad off) / 2.8 kΩ (with pad on) |
| Output Impedance | 290 Ω |
| Current Consumption | ±16 V supply: ≤ 150 mA, +48 V supply: ≤ 15 mA |
| Equivalent Input Noise (EIN) | Within 3 dB of theoretical minimum of −130.4 dBu (150 Ω source, 22 Hz–22 kHz bandwidth) |
| Total Harmonic Distortion and Noise (THD+N) | THD+N at +4 dBu in an 80 kHz measurement bandwidth |
| High-Pass Filter Frequencies | 40 Hz, 80 Hz, or off (5 Hz, essentially no audible effect) |
| De-Esser Frequency Range | 2–16 kHz (adjustable) |
| De-Esser Bandwidth | Adjustable |
| De-Esser Threshold | Adjustable |
| De-Esser Attack Time | 100 µs, 400 µs, 1.6 ms, 6.4 ms (DIP switch settings) |
| De-Esser Release Time | 15 ms, 30 ms, 60 ms, 120 ms (DIP switch settings) |
| De-Esser Ratio | 1:1.5 to 1:∞ (DIP switch settings) |
| Output Driver | Transformer balanced, continuous level control from −∞ dB to +12 dB, polarity switch |
