SPL Crescendo 8 – Eight-Channel Microphone Preamplifier with 120V Technology

The SPL Crescendo 8 is a high-end, eight-channel microphone preamplifier designed to deliver exceptional detail, transparency, and headroom. Powered by SPL’s proprietary 120V technology, the Crescendo 8 redefines microphone amplification by offering unparalleled dynamic range and distortion-free performance. Whether for studio recording or high-fidelity applications, the Crescendo 8 ensures that every microphone shines like never before.

Key Features

• 120V Technology: Industry-leading headroom, ultra-low noise, and superior signal integrity.
• Eight High-End Mic Preamps: Transparent sound with up to +70 dB gain.
• Undistortable Performance: Virtually impossible to overload, ensuring pristine audio capture.
• Built-in Output Splitter: Dual outputs (XLR & DB25) per channel for simultaneous routing to multiple destinations.
• Comprehensive Controls: Phantom power, polarity reverse, PAD (-20 dB), and VU meter attenuation (-10 dB).
• Premium Circuit Design: Discrete transistor pairs for superior phase accuracy and minimal distortion.

Unrivaled 120V Technology

The Crescendo 8 is built with SPL’s groundbreaking 120V SUPRA operational amplifiers, offering:

• +/-60V internal operating voltage: Four times the headroom of standard pro audio gear.
• Extended dynamic range: Captures the full nuance of any sound source.
• Ultra-low distortion: Ensures clarity and musicality at any gain setting.
• Fatigue-free listening: No harshness, even with extreme transients.

Advanced Control Features

• Mic Gain: Smooth analog potentiometer adjusts gain from +18 dB to +70 dB.
• VU-10: Engaging the -10 dB switch adjusts the VU meter for high-level signals.
• 48V Phantom Power: Dedicated per-channel activation for condenser microphones.
• Phase Reverse (Ø): Instantly flips polarity for phase correction.
• PAD (-20 dB): Allows handling of high-level sources and line-level signals.

Dual Outputs for Flexible Routing

Each of the eight channels features two parallel outputs:

• XLR Line Output: Direct balanced output for clean, high-fidelity signal routing.
• DB25 Connector: Seamless integration with multi-channel AD converters.

This built-in output splitter eliminates the need for an external distribution amp, making multi-device signal routing effortless.

Precision Engineering for Pure Sound

The Crescendo 8’s signal path is optimized with hand-selected components:

• High-matching transistor pairs: Ensures superior common-mode rejection and ultra-low THD.
• Class A current amplifiers: Provides smooth, detailed sound with rich harmonic depth.
• No Coupling Capacitors: Avoids phase smear and transient loss.
• Active Servo Circuits: Eliminates DC offset for pristine signal integrity.

Looks Great, Feels Great – Built for a Lifetime

• 4mm Black Anodized Aluminum Front Panel: Premium aesthetics with professional durability.
• Solid Aluminum Control Knobs: Smooth, precise adjustments with a premium feel.
• High-Quality Steel Chassis: Powder-coated for long-lasting durability.

Specifications

Analog Input & Output:

• Maximum Output Level: +32.5 dBu
• Input Impedance: 10 kΩ
• Output Impedance: 75 Ω
• Frequency Range (-3 dB, 30 dB Gain): 20 Hz – 100 kHz
• THD + N (30 dB Gain): 0.0089%
• THD + N (70 dB Gain): 0.30%
• Noise (A-weighted, 150Ω, 30 dB Gain): -90.8 dBu
• Noise (A-weighted, 150Ω, 70 dB Gain): -57.8 dBu
• Equivalent Input Noise (EIN, 150Ω): -127.8 dBu
• Common Mode Rejection Ratio (CMRR, 30 dB Gain): >84 dB

Internal Linear Power Supply:

• Operating Voltage for Audio Electronics: +/- 60V
• Operating Voltage for Relays & LEDs: +12V

Mains Power Supply:

• Mains Voltage (Selectable): 230V AC / 50Hz; 115V AC / 60Hz
• Fuse for 230V: T 1.6A
• Fuse for 115V: T 3.15A
• Power Consumption: 230V: 60W, 115V: Max 60W

Dimensions & Weight:

• W x H x D: 482 x 132 x 300 mm (19 x 5.2 x 11.8 inches)
• Unit Weight: 9.5 kg (20.94 lbs)
• Shipping Weight: 12.25 kg (27.01 lbs)

The SPL Crescendo 8 is the ultimate multi-channel microphone preamplifier for professionals who demand absolute sonic accuracy. Its unrivaled dynamic range, pristine detail, and innovative 120V technology make it the perfect choice for world-class recording studios and high-fidelity audio engineers.