FiiO K7 Desktop DAC & Headphone Amplifier

Elevate your desk to concert level

Rediscover albums you thought you knew. The FiiO K7 brings balanced desktop power, vanishingly low distortion, and a subtly musical AKM presentation together in a compact, all‑aluminum body—so your favorite headphones finally sound as open, dynamic, and effortless as they should. Whether you’re driving power‑hungry planars or sensitive IEMs, K7 delivers clean headroom with the composure of a true hi‑fi component, not a dongle or laptop jack.

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Why Audiophiles Choose This Product

• Genuinely engaging, high‑fidelity sound: Dual AKM AK4493SEQ DACs are known for a natural, slightly warm timbre that keeps detail intact without introducing glare—ideal for long sessions and mixed genres. Reviewers consistently describe the K7 as clean, dynamic, and fatigue‑free.
• Serious engineering where it counts: The fully balanced six‑stage signal path and dual THX AAA 788+ amplifier modules deliver ultra‑low distortion with abundant current, translating to grip and control on difficult loads. Independent LDO‑regulated power stages and multiple protection circuits keep performance stable.
• Desk‑friendly and intuitive: A solid aluminum chassis, tactile switches, and an ADC‑assisted volume system with 112 smooth steps prevent channel imbalance at low levels, so you can fine‑tune loudness precisely day or night.
• Versatile connectivity for any setup: USB‑B, optical, coaxial, and RCA line‑in cover computers, consoles, streamers, and DACs; 6.35 mm single‑ended and 4.4 mm balanced front‑panel outputs serve everything from IEMs to reference headphones. Three output modes let K7 act as headphone amp, preamp for powered speakers, or fixed DAC.
• Power with poise that outperforms its class: Up to 2000 mW per channel (32 Ω, balanced) or 560 mW (300 Ω, balanced) means confident drive for planars and high‑impedance dynamics; measurements from independent labs show excellent noise and distortion performance.

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What’s Included

• FiiO K7 desktop DAC/amp: Dual AK4493SEQ DACs, dual THX AAA 788+ amps, truly balanced architecture.
• Primary accessories: 12 V / 2 A external power adapter and regional power cable; USB‑A to USB‑B data cable.
• Documentation: Quick start guide and warranty card.

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Technical Specifications

Specification	Value	Notes
Product Type	Wired desktop DAC & headphone amplifier	USB‑B, optical, coaxial, RCA line‑in; RCA line‑out/pre‑out
DAC	Dual AKM AK4493SEQ	Natural, slightly warm AKM “velvet” tonality without sacrificing detail.
USB Interface	XMOS XUF208	Asynchronous USB; robust driver support.
Amplification	Dual THX AAA 788+	High current, low distortion, balanced modules left/right.
Max Sample Rates	USB: PCM 384 kHz/32‑bit, DSD256; Coax: 192/24; Optical: 96/24	RGB ring indicates rate: blue ≤48k, yellow 88.2–384k, green DSD.
Output Power (balanced)	≥2000 mW @ 32 Ω; ≥560 mW @ 300 Ω (THD+N <1%)	Confident headroom for planars and 300 Ω dynamics.
Output Power (single‑ended)	≥1220 mW @ 32 Ω; ≥140 mW @ 300 Ω (THD+N <1%)	Drives most headphones from 6.35 mm.
SNR / THD+N	Up to ≥120 dB (A‑wtd, UAC) / <0.0003% (1 kHz/32 Ω)	Low noise floor; transparent performance.
Output Impedance	<1 Ω (32 Ω load)	Safe for sensitive IEMs.
Gain	Two hardware levels (L/H)	Match sensitive IEMs or hard‑to‑drive cans.
Modes	Headphone amp / Preamp / Fixed DAC	Front‑panel switchable.
Recommended Headphone Impedance	16–300 Ω	Works beyond this in practice; spec guidance from FiiO.
Power	External 12 V / 2 A supply (included)	Clean, low‑noise multi‑stage regulation inside.
Dimensions / Weight	120 × 168 × 55 mm / ≈610 g	Compact desktop footprint.

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Professional Recognition

• “Clean, engaging sound signature with no distortion… plenty of power to drive the vast majority of headphones.” — TechPowerUp.
• Independent measurements from L7Audiolab show excellent SINAD and multitone results from both single‑ended and balanced outputs, supporting its low‑distortion design.
• Head‑Fi community reviewers highlight its combination of power, low noise, and robust construction, calling it a “little beast” and praising its clear, natural sound.
• FiiO heritage: The K7 inherits architecture cues from the brand’s higher‑end K9 series—balanced topology, THX AAA amplification, and careful power management—distilled into a more compact, accessible chassis.

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The Bottom Line

FiiO’s K7 is the rare “do‑it‑once” desktop upgrade: a truly balanced, low‑distortion DAC/headphone amp with the power, connections, and refinement to anchor your system for years. If you want a reliable, measurements‑backed step into serious desktop audio—without giving up musicality or desk space—the K7 sets a new baseline that’s hard to beat.

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Notes and buying tips:

• This listing is for the wired K7 model. A separate K7 BT version adds Bluetooth codecs and app control if you need wireless input.
• For the best experience on Windows, install FiiO’s USB driver and use exclusive/ASIO mode in your player to auto‑match sample rates.