FiiO Class A – Pure Class A desktop headphone amp
The Class A is a fully discrete desktop headphone amplifier for listeners who want true analog drive. A pure Class A circuit delivers 1000 mW per channel with a warm, low-distortion character, fed by a custom toroidal transformer and a discrete regulated supply. Five gain levels and balanced outputs make it a flexible centrepiece, available in the FiiO range at Soundium.
Key Features
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Pure Class A discrete design: Fully discrete transistor circuit for warm, low-distortion analog drive.
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1000 mW + 1000 mW: Ample power for demanding headphones, including planars.
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Custom 60 W toroidal transformer: Discrete regulated supply for a clean, quiet noise floor.
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Five gain levels: Match sensitive in-ears through to power-hungry full-size headphones.
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Balanced and single-ended I/O: 4.4 mm, XLR, 3.5 mm headphone outputs plus RCA and XLR line in and out.
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Independent bass and treble: Tactile tone shaping, plus 12V trigger in and out for system integration.
Customer Benefits
Pure Class A amplification trades efficiency for sound quality, holding the output stage in its most linear region for a smooth, low-distortion presentation. The Class A backs that with a custom toroidal transformer and discrete regulation to keep the noise floor low, while five gain levels and both balanced and single-ended outputs let it drive almost anything on the desk. With RCA and XLR line outputs it also doubles as a preamplifier into a wider system.
Quick Specs
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Amplifier type: Fully discrete pure Class A
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Output power: 1000 mW + 1000 mW
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Power supply: Custom 60 W toroidal transformer, discrete regulation
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Gain: 5 levels
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Headphone outputs: 3.5 mm, 4.4 mm balanced, 4-pin XLR
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Line I/O: RCA and XLR in and out
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Extras: Independent bass and treble, 12V trigger in/out
Ideal For
Headphone enthusiasts after analog Class A drive, balanced setups, and desktops that double as a preamp into a larger system.
Pros & Cons
✅ Pros:
- True pure Class A, fully discrete analog drive
- Plenty of power with five gain levels for any headphone
- Balanced and single-ended outputs, plus line in and out
- Doubles as a preamplifier into a wider system
⚠ Cons:
- Runs warm by design, as pure Class A always does
- No built-in DAC, so it needs a separate source or DAC
For a desktop that puts analog Class A sound first, the Class A is a focused, flexible amplifier. Find the FiiO Class A at Soundium.
