SPL Phonitor One – Audiophile Headphone Amplifier with Phonitor Matrix

The SPL Phonitor One is a high-end headphone amplifier designed for professional audio engineers and audiophiles. Featuring the revolutionary Phonitor Matrix, this amplifier enables accurate speaker-like stereo imaging for precise mixing and immersive listening. With exceptional analog circuitry, a class AB push-pull amplifier, and a meticulously designed power supply, the Phonitor One delivers an unparalleled headphone experience.

Key Features

• Phonitor Matrix: Accurate stereo imaging for professional mixing on headphones.
• Two Stereo Inputs: Balanced (TRS) and unbalanced (RCA) connections.
• Class AB Push-Pull Amplification: High output power with exceptional sound clarity.
• Optimized Power Supply: Internal secondary power stage generates +/-17V for high headroom.
• High-Quality Preamplifier: Burr-Brown OPA 2134 SoundPlus™ op-amps with ultra-low distortion (0.00008%).
• Precision Volume Control: Ensures optimal gain staging and smooth level adjustment.
• -10 dB Attenuation Switch: Adapts to highly sensitive headphones.

Phonitor Matrix – Studio-Grade Headphone Monitoring

The Phonitor Matrix provides speaker-like sound perception for accurate headphone mixing. It includes:

• Crossfeed: Adjustable channel blending to replicate natural speaker sound.
• Fixed Angle (30°): Standardized speaker placement for realistic imaging.
• Center Attenuation (-1 dB): Maintains precise stereo balance for professional audio work.

Superior Class AB Push-Pull Amplification

The Phonitor One features a high-power push-pull amplifier for crystal-clear sound reproduction:

• Class AB Design: Efficient and dynamic power handling.
• Thermally Coupled Transistors: Ensures stable and coherent sound.
• Low-Resistance Buffer Circuit: Delivers high current reserves for low-impedance headphones.

Connectivity – Flexible Analog Inputs

• Balanced TRS Input: Ideal for professional audio interfaces and high-end sources.
• Unbalanced RCA Input: Perfect for CD players, mixers, and analog devices.

For digital sources, consider the Phonitor One d with an integrated 32-bit DAC.

Precision Power Supply for Maximum Headroom

Designed for professional-grade performance, the Phonitor One generates:

• +/-17V Analog Audio Voltage: High dynamic range and low noise.
• +/-19V Headphone Amplifier Voltage: Ensures powerful, distortion-free playback.
• +12V Relay Power: Stable switching and reliability.

Specifications

Analog Inputs:

• Input Gain (Max): +22.5 dBu
• Input Impedance: Balanced TRS (20 kΩ), Unbalanced RCA (47 kΩ)
• Common Mode Rejection: < 60 dB

Headphone Output:

• Source Impedance: 20 Ω
• Output Power: 2x 190 mW (600Ω), 2x 330 mW (250Ω), 2x 400 mW (47Ω)
• THD+N (600Ω, 0 dBu): 0.002%
• THD+N (32Ω, 0 dBu): 0.013%
• Noise (A-weighted, 600Ω): -99 dBu
• Dynamic Range: 121.5 dB
• Crosstalk (1 kHz, 600Ω): -75 dB

Power Supply:

• Internal Secondary Power: ±17V (Analog), ±19V (Headphone Stage)
• External PSU: 12V DC, 1.5A (Included)
• Power Consumption: Max 12W

Dimensions & Weight:

• W x H x D: 210 x 49.6 x 220 mm (8.23 x 1.95 x 8.66 inches)
• Weight: 1.40 kg (3.09 lbs)
• Shipping Weight: 2 kg (4.4 lbs)

The SPL Phonitor One is the ultimate headphone amplifier for audiophiles and professionals who demand accurate, high-resolution monitoring in a compact yet powerful format.