SPL Pre One

The SPL Pre One is a high-performance dual-channel microphone preamplifier designed to deliver outstanding sound quality through its discrete technology. Ideal for both professional audio recording and live performances, the Pre One is equipped with two preamplifiers that ensure an open and transparent sound, perfect for capturing the nuances of both vocals and instruments. One of its standout features is the inclusion of a Hi-Z instrument input, allowing instruments like electric guitars to benefit from the high-quality preamp sound, making it versatile for a variety of recording setups.

Both preamps come with adjustable gain control ranging from +8 to +62 dB, making it compatible with demanding microphones. Each channel also features 48V phantom power, a high-pass filter to eliminate low-frequency noise, and phase reverse functionality for greater sound control. The Pre One also offers unique EQ settings with the Flair and Contour functions, enhancing the high frequencies for a silky sound or creating a more compact mix. With its high-quality Neutrik XLR mic inputs and separate line outputs, this preamplifier is a professional-grade addition to any recording setup.

• Dual-channel microphone preamplifiers

• Hi-Z instrument input for electric instruments

• Gain control for adjusting preamplification

• 48V phantom power for condenser microphones

• High-pass filter to reduce low-frequency noise

• Phase reverse function for signal polarity

• Flair and Contour EQ presets for enhanced sound

• PAD function to handle high-level signals

• Separate line outputs for each preamp

• Built with high-quality components in Germany

• External power supply with internal regulation for optimal performance

GENERAL:

• Product type: Dual-channel microphone preamplifier

• Technology: Discrete

• Series: Series One

PREAMPLIFIERS:

• Number of channels: 2

• Gain control: +8 dB to +62 dB

• Phantom power: +48 V (independent for each channel)

• High-pass filter: 6 dB/octave, 80 Hz

• Phase reverse: 180 phase inversion

• PAD switch: -20 dB (rear DIP switches)

• Flair: Enhances high frequencies for silky highs

• Contour: Smooths the mix while maintaining presence

INPUTS:

• Mic inputs: 2x Neutrik XLR (balanced, gold-plated contacts)

• Hi-Z instrument input: 1 (on preamplifier 2, disables mic input 2 when used)

• Input impedance (Mic): 10 kohm

• Input impedance (Line): 1.1 Mohm

• Maximum input gain (Mic, +8 dB Gain): +13.5 dBu

• Maximum input gain (Inst, -6 dB Gain): +23.5 dBu

OUTPUTS:

• Line outputs: 2x TRS (balanced)

• Output impedance: 75 ohm

• Maximum output gain: +22 dBu

PERFORMANCE:

• Frequency range: 10 Hz " 200 kHz

• Equivalent input noise (EIN): -126 dBu

• Noise (Mic Preamp, 150 ohm, 30 dB Gain): -95 dBu

• Noise (Mic Preamp, 150 ohm, 62 dB Gain): -68 dBu

• Common mode rejection (1 kHz, Mic): >75 dB

• THD+N ratio (1 kHz, 30 dB Gain): 0.003%

• THD+N ratio (1 kHz, 62 dB Gain, Max): 0.018%

• Dynamic range: 117 dB

• Signal LED threshold: -25 dBu

POWER:

• Power supply: External plug-in, 12 V DC (100 V " 240 V AC input, 50 Hz/60 Hz)

• Internal operating voltages: +/-17 V for analog, +/-12 V for relays and LEDs

• Power consumption: Max 7 VA

DIMENSIONS & WEIGHT:

• Dimensions (W x H x D): 210 x 49.6 x 220 mm (8.23 x 1.95 x 8.66 inch)

• Unit weight: 1.5 kg (3.3 lbs)

• Shipping weight: 2 kg (4.4 lbs)

ADDITIONAL:

• Made in: Germany

• Compatible with SPL Marc One for monitoring and recording applications