Pro-JEct Head Box S3 B Black
Fully balanced high end headphone amplifier
The Head Box S3 B is a high-performance headphone amplifier built around a unique, fully balanced topology that redefines what is possible in its price class. Designed for audiophiles who demand surgical clarity, precision, and flexibility, it supports both balanced and single-ended headphones and integrates seamlessly into modern desktop and hi-fi systems.
Designed with the overarching goal to find the perfect balance between output power and perceived sound quality the Head Box S3 B sets new standards in its price range.
Max. power output: 480mW / 8 Ohms, 680mW / 16 Ohms, 820mW / 32 Ohms, 320mW / 300 Ohms
Headphones output: 3.5mm, 6.3mm, 4.4mm balanced, 4 pin balanced XLR
SNR: > 115dB „A“-wt. at 1kHz
THD: < 0,002% at 1kHz @ 500mV Input
Crosstalk: < -81dB at 10kHz
Gain: 15dB / 9dB (RCA In /XLR In)
Frequency response: < -0,25dB at 20Hz-20kHz
Analogue inputs: 1 pair RCA/Cinch, 1 pair XLR
Analogue loop outputs: 1 pair RCA
Headphone impedance: min. 8 Ohms
Power supply: 18V/1A DC, 110-240V, 50/60Hz
Standby Power consumption: < 0,5W
Dimensions W x H x D: 206 x 55 x 153 (170) mm
Weight: 950 g without power supply
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