SPL Audio P8+ADC

The SPL Audio P8 + ADC combines eight high-quality discrete-transistor microphone preamplifiers with the optional ADC8 eight-channel analog-to-digital converter. Designed for professional recording studios and multichannel production environments, it delivers clean, transparent microphone amplification alongside direct digital connectivity to compatible audio interfaces. With individual channel controls and support for high-resolution conversion up to 24-bit/192 kHz, the P8 + ADC provides a streamlined solution for capturing multiple microphones with precision and flexibility.

Key Features

• Eight Discrete Microphone Preamplifiers: Each channel uses an individual-transistor circuit design for detailed, transparent audio reproduction.
• Wide Gain Range: Adjustable microphone preamp gain from +8 dB to +62 dB accommodates a broad range of microphones and recording sources.
• Individual 48 V Phantom Power: Independently switchable phantom power on every channel supports compatible condenser microphones.
• 20 dB Pad: Reduces input level to help handle high-output microphones and loud sound sources.
• Polarity Inversion: Individual polarity-reversal switches support phase-conscious multichannel recording.
• 80 Hz High-Pass Filter: A switchable analog filter with a 6 dB-per-octave slope helps reduce unwanted low-frequency rumble and subsonic noise.
• Integrated ADC8 Converter: Converts all eight analog preamp signals into digital audio using an AKM AK5538 converter chip.
• High-Resolution Digital Output: Supports 24-bit conversion at sample rates from 44.1 kHz up to 192 kHz.
• Dual Optical ADAT Outputs: Two TOSLINK outputs provide digital connectivity to compatible audio interfaces and recording systems.
• Word Clock Synchronization: Dedicated word clock input and output support synchronization with external digital equipment.
• Balanced Analog Outputs: A DB25 connector provides eight channels of analog line-level output, allowing the preamps to feed external equipment alongside digital recording.
• Professional Rackmount Design: A rugged 19-inch, 1U steel chassis with an anodized aluminum front panel suits studio racks and permanent installations.

Technical Specifications

• Channels: 8 microphone preamplifiers
• Circuit Design: Discrete transistor
• Microphone Inputs: 8 balanced XLR
• Gain Range: +8 dB to +62 dB
• Phantom Power: +48 V, individually switchable
• Pad: −20 dB per channel
• High-Pass Filter: 80 Hz, 6 dB/octave
• Equivalent Input Noise (EIN): −124 dBu
• Frequency Response: 15 Hz–200 kHz
• A/D Conversion: 24-bit, up to 192 kHz
• Digital Outputs: 2 optical ADAT (TOSLINK)
• Synchronization: Word clock input and output
• Analog Output: 8-channel balanced DB25
• Dimensions (W × H × D): 482 × 44 × 237 mm
• Weight: 4.15 kg

Official Product Sources:

• P8: https://spl.audio/en/spl-produkt/p8/
• ADC8 converter: https://spl.audio/en/spl-produkt/adc8/