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PRO-JECT Head Box E
Compact and powerful headphone amplifier.
Discrete circuitry, low distortion and noise
Dual simultaneous outputs (6.35 mm + 3.5 mm)
RCA input with bypass
Power: 665 mW at 32 Ω
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Pro-Ject Head Box E: Compact and Powerful Headphone Amplifier
The Pro-Ject Head Box E is designed to unlock the full potential of your headphones, even the most demanding ones. Laptops and smartphones often lack the power to deliver an audiophile-grade sound, and this is where this compact amplifier makes all the difference.
With a fully discrete design —no cheap integrated chips— the Head Box E delivers clean power output, rich dynamics, and outstanding transparency. Its output level is high enough to drive high-impedance headphones with ease, ensuring balanced performance at both low and high volumes.
It features an analog RCA input to connect your favorite source and two headphone outputs on the front panel: a 6.35 mm jack for Hi-Fi models and a 3.5 mm jack for modern headphones or earbuds. Both outputs can be used simultaneously, allowing you to share the listening experience without any loss in quality.
The solid metal chassis, combined with a precision-machined aluminum front panel, effectively shields internal circuits from electromagnetic interference and external vibrations. Additionally, it includes an RCA loop output for seamless integration into more complex audio systems.
Thanks to its versatility, power, and high-quality sound at an affordable price, the Head Box E stands out as one of the reference headphone amplifiers in its class.
Key Features
Suitable for demanding, high-impedance headphones.
Dual headphone outputs: 6.35 mm + 3.5 mm (can be used simultaneously).
RCA input with loop-out (bypass).
Fully discrete circuitry, no integrated OpAmps.
Ultra-low distortion and minimal noise components.
Solid metal construction with aluminum front panel.
Available in black or silver finish.
Compatible with Pro-Ject Accu Box S2 / Accu Box S2 USB power supply upgrades.
Technical Specifications
Output power: 665 mW (at 32 ohms).
Signal-to-noise ratio: -105 dBV.
THD + N: < 0.005%.
Gain: 11 dB.
Crosstalk: 65 dB.
Frequency response: 20 Hz – 80 kHz (±0.02 dB).
Inputs: 1 × RCA pair.
Headphone outputs: 1 × 6.35 mm jack, 1 × 3.5 mm jack.
Output impedance: < 1 ohm.
Analog loop output: 1 × RCA pair.
Power supply: 5 V/0.5 A DC.
Standby consumption: < 0.5 W.
Dimensions (W × H × D): 103 × 37 × 120 mm.
Weight: 390 g (without power supply).
5024000139
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