HiFiMAN EF1000DAC Amplifier/DAC Combo (Wired)

Power, purity, and R‑2R realism for the world’s most demanding headphones

Imagine your reference headphones finally sounding unrestrained—microdetail emerging from a jet‑black background, transients with real weight, and instruments rendered with natural, NOS‑like timbre. EF1000DAC was built to deliver that experience in a single, ultra‑resolute desktop component that marries a statement‑level balanced headphone amplifier with HiFiMAN’s Hymalaya Pro R‑2R ladder DAC. It’s purpose‑built for flagship planars that crave current and control, without sacrificing the organic, life‑like tone audiophiles prize.

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Why Audiophiles Choose This Product

• • Powerful, effortless drive
  • 13.7 W per channel into 32 Ω from the balanced output (7 W SE) gives extreme headroom for hard‑to‑drive planars like SUSVARA—without losing finesse at lower volumes. Community owners report it “drives the Susvara without issue.”
• • Reference‑grade digital conversion
  • The Hymalaya Pro R‑2R ladder DAC (four modules in a fully balanced topology) is engineered for ultra‑low distortion and NOS‑like smoothness, elevating natural timbre and spatial realism.
• • Discrete, fully balanced analog stage
  • HiFiMAN’s high‑voltage discrete op‑amp front end (26 V rails, 12 V output, 0.0003% THD) feeds a quad‑matched‑transistor output stage for vanishingly low THD and superb dynamics.
• • Practical control, pro connectivity
  • Front‑panel input selector, 24‑step balanced volume control, and both 4‑pin XLR and 6.35 mm jacks. Rear‑panel balanced XLR and RCA line‑outs make it easy to integrate with powered monitors or a separate amp.
• • Flexible listening, wired first
  • Designed as a wired desktop reference (USB/optical/coaxial/analog RCA), with Bluetooth 5.0 onboard for LDAC and aptX HD convenience when you want it. A rear NOS/OS switch lets you tailor the presentation to taste.
• • Ultra‑low noise, wide separation
  • 120 dB A‑weighted SNR and 131 dB channel separation preserve ambience and imaging even on the most revealing headphones.

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What’s Included

• • Main product: HiFiMAN EF1000DAC Balanced Headphone Amplifier and DAC (max output 13.7 W @ 32 Ω balanced per channel)
• • Primary accessory: Detachable AC power cable
• • Secondary items: Bluetooth antenna for optimal wireless reception when used; spare rear‑panel fuse noted in documentation
• • Documentation: Owner’s Guide and Warranty Card (three‑year limited warranty per manual)

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Technical Specifications

Specification	Value	Notes
Product Type	Wired desktop amplifier/DAC (Bluetooth 5.0 input supported)	Primary use via USB/optical/coax/analog; LDAC/aptX HD for convenience.
Max Headphone Output	13.7 W @ 32 Ω (balanced); 7 W @ 32 Ω (single‑ended)	Drives current‑hungry planars with authority.
DAC Architecture	Hymalaya Pro R‑2R ladder (fully balanced, four modules)	NOS‑like timbre with ultra‑low THD; balanced signal path.
Inputs	USB, Optical, Coaxial, Analog RCA; Bluetooth 5.0 (LDAC/aptX HD/AAC/SBC)	Quick front‑panel selection; LDAC/aptX HD for high‑quality wireless.
Outputs	Front: 4‑pin XLR, 6.35 mm; Rear: Balanced XLR, RCA line‑out	Easy integration with headphones and external amps/monitors.
Noise/Separation	SNR 120 dB (A‑weighted); Channel separation 131 dB	Black background, precise imaging.
Distortion	THD+N (line out) 0.0012% (‑8 dB)	Clean, transparent conversion.
Gain/Control	24‑step balanced volume; NOS/OS mode switch	Repeatable level matching; tune transient feel and texture.
Power Topology	Discrete high‑voltage op‑amp into quad matched‑transistor output	Low distortion, high dynamic headroom.
Dimensions	47 x 28 x 17.5 cm	Substantial, well‑ventilated chassis; allow clearance for cooling.
Weight	13000 g	Anchors vibrations; premium build presence on the desk.

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Professional Recognition

• Press coverage
  • Secrets of Home Theater & High Fidelity announced EF1000DAC as HiFiMAN’s new reference desktop DAC/amp, highlighting its Hymalaya Pro ladder DAC and fully balanced 13.7‑W output stage.
  • Residential Systems spotlighted the discrete 26‑V high‑voltage op‑amp and noted a fully balanced stepped volume control and 150‑W transformer.
  • Sound & Vision covered EF1000DAC’s high‑power amplifier section and LDAC/aptX HD support, underscoring its suitability for power‑hungry headphones.
• Community impressions
  • In Head‑Fi discussions, experienced owners compared EF1000DAC’s output with the original EF1000 and confirmed strong pairing with SUSVARA‑class planars.
• Heritage and innovation
  • The Hymalaya Pro architecture is HiFiMAN’s evolution of classic R‑2R, designed to achieve PCM1704‑level (or better) linearity with higher efficiency and low THD, integrated here in a fully balanced layout.

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The Bottom Line

EF1000DAC is a rare combination of muscle and musicality: a fully balanced, high‑current headphone amplifier that finally lets your top‑tier planars breathe, fused with a refined R‑2R DAC that rewards long sessions with naturally textured, fatigue‑free sound. With pro‑grade I/O, 24‑step volume, NOS/OS flexibility, and robust build quality, it’s a confidence‑inspiring centerpiece for any serious headphone rig—and a compelling way to experience what your flagship transducers can really do.

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Notes on validation and accuracy

• All key specifications (power, I/O, SNR, separation, THD+N, dimensions, weight, included accessories, NOS/OS switch, volume steps) were verified directly from the official EF1000DAC Owner’s Guide and HiFiMAN product page.
• Engineering details (discrete 26‑V op‑amp, quad‑matched transistors, balanced stepped volume, 150‑W transformer) and product positioning were corroborated via manufacturer press communications reported by reputable outlets.

Ideal for: Headphone connoisseurs seeking a singular, wired desktop reference that combines uncompromised amplification with the immediacy and tone of a modern R‑2R DAC—plus the convenience of LDAC/aptX HD when desired.