PRELUDE Fully Balanced Class A Headphone Amplifier

Full Balanced Class A MOS-FET High Current Output

The fully discrete architecture features a precise, single-ended balance conversion circuit that renders the single-ended RCA input balanced fully balanced.

The input stage employs a fully balanced amplifier architecture, with precise, single-ended/balanced conversion. The pre-amplifier circuit is independent, adopting a class A output structure, with excellent power and natural timbre.

Hifiman Prelude Fully Balanced Headphone Amplifier Overview

ALPS Potentiometer

The potentiometer ensures complete and accurate channel balance.

A customized high-power, low-noise toroidal transformer, with multi-channel high-speed low-noise voltage regulator circuit, supplies power for the headphone amplifier.

Hifiman Prelude Fully Balanced Headphone Amplifier ALPS POTENTIOMETER

Fully balanced headphone protection circuit

The housing is manufactured from a single piece of aluminum, which helps isolate harmful resonance that negatively affects sonic output.

Hifiman Prelude Fully Balanced Headphone Amplifier with Susvara

FRONT

Combo Jack: XLR 3-Pin Balanced Output
Combo Jack: 6.35mm Single-ended Output
XLR 4-Pin Balanced Output
4.4mm Balanced Output
Volume Control
Input Selection
Gain Selection
Output Selection
OLED Display (Current Input, Current Output, Current Gain)

Hifiman Prelude Fully Balanced Headphone Amplifier Front View

BACK

AC Power Connector (110V default setting)
Pre-Amp Output: XLR Balanced
Pre-Amp Output: RCA Single-ended
Audio Input: RCA Single-ended
Audio Input: XLR Balanced

Hifiman Prelude Fully Balanced Headphone Amplifier Back View

Specifications

Frequency Response: 20-50KHZ, ±1dB@1KHz
Signal to Noise Ratio: -113dB @1KHz
THD+N: 0.0009%, low gain, @1KHz
Power Output: (0.1% @1KHz, balanced) 10W@32Ω, 6W@64Ω, 2.5W@150Ω, 1W@300Ω, 560mW@600Ω
Total Power Consumption: <50W
Dimension (L*H*W): 330*56*260mm, protrusions not included
Net Weight: 6.5KG