Key Features
- Flawless, transparent sound
- 120V operating technology for massive headroom
- High-voltage SUPRA op-amps
- Discrete output stage for driving long cable paths without signal degradation
SPL Crescendo 8 Octo-Channel Microphone Preamplifier Overview
The SPL Crescendo is an 8-channel microphone preamplifier with transparent sound, massive dynamic range, and ultra-low distortion. It's designed to capture even the finest details in any recording, all while taking up only 3U of 19” rack space. To maintain precise craftsmanship, SPL has outfitted the Crescendo with differential amplifiers made of perfectly matched transistor pairs and thermal coupling to deliver incredibly low thermal distortion.
The preamp circuitry's output stage also operates on a 6mA dormant current, ensuring Class-A operation. And to avoid electrical interference and prevent power noise from bleeding into the range of the preamps, a specially selected Toroidal transformer power supply is shielded with custom-fabricated sheeting integrated into the Crescendo’s housing.
Product Ref: 258849
Full Description
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Crescendo has 8 preamp channels that can be independently controlled. It comes with all the usual features of modern studio preamps like polarity reverse, a 20 dB pad for louder signals, gain control, 48v phantom power, and a VU meter for each channel. The preamp offers flexibility for a wide range of microphones with varying output levels, because each channel's microphone gain can be adjusted from 18 to 70dB, accommodating even low-output ribbon microphones.
Clean sound delivery
Crescendo's preamps are designed with SPL's unique 120V technology, utilizing high-voltage SUPRA op-amps. This technology grants Crescendo with exceptional operating headroom, preventing the preamps from being overloaded. Plus the preamp circuit can amplify rapid transients thanks to its potential internal operating voltage of approximately +/- 60 volts.
Features
- Produces a clear and transparent sound ideal for various sources
- Operates at 120V, providing ample headroom
- Features high-voltage SUPRA op-amps
- Offers a broad gain range of 18dB - 70dB or -2dB to 50dB with a pad
- Includes a discrete output stage that can maintain signal integrity for long cable runs
- Has a mu-metal shielded Toroidal transformer PSU
- Contains active servo circuits that eliminate the need for coupling capacitors
Specifications
- Frequency Range: 20-50kHz, -3dB
- Preamp Gain: 70 dB
- Input Impedance: 10 kOhm
- Output Impedance: < 600 Ohm
- Noise: -69.7 dB @ 60dB Gain, -87.5 dB @ 30dB Gain (A-weighted)
- Fast Fourier Transformation: -96dBu @ 60dB Gain, -120dBu @ 20 dB Gain
- Rejection Ratio: > 65dBu/1kHz 60 dB Gain, > 75dBu/1kHz @ 30 dB Gain
- THD: 0.04% @ 60dB Gain, 0.008% @ 30dB Gain
- Equivalent Input Noise: 150 Ohm 129.5 dB @ 60dB Gain, 40 Ohm 134.4 dB @ 60dB Gain
- Dimensions: 482 x 132 x 300 mm
- Weight: 9.5kg
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