Hifi Rose - USA RA280
The RA280 marries effortless 250W-per-channel drive with a rich, refined tonal balance, making demanding speakers sound controlled, vivid and alive. Its GaN-based dual-mono design delivers punchy bass, low noise and sharply focused imaging, while MM phono, XLR input and defeatable tone controls add genuine analogue-system flexibility. hi-fi+ especially admired its expansive headroom and engaging musical ease.
WATT RECOMMENDS
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Deliciously Crispy
Sound Quality
92/100
Build Quality
92/100
Features Connectivity
87/100
Value for Money
95/100
Pros
Powerful, controlled delivery drives demanding loudspeakers with exceptional ease, headroom and bass authority.
Refined, richly textured sound combines strong detail retrieval with an involving, non-sterile musical character.
Excellent build quality, useful MM phono stage and well-executed defeatable tone controls enhance its analogue appeal.
Cons
Analogue-only connectivity means digital sources require an external DAC or streamer, and there is no headphone output.
Treble balance and ultimate spatial depth can depend on careful speaker and system matching.
The volume control is not fully silent at minimum on the balanced input, requiring mute for complete silence.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 92/100
The RA280 is widely described as a powerful, refined and musically involving amplifier, combining low noise and high resolution with a slightly warm, full-bodied presentation. Its strengths include effortless drive, convincing image focus and strong spatial separation, although speaker matching can affect its treble character and ultimate stage depth.
Transparency Resolution
93/100
Stereophile found the amplifier surgically clean and able to uncover previously unheard details and ambient information, while its measurements confirmed very low distortion. Other reviewers similarly heard a noise- and grain-free presentation with strong insight, though HiFi News notes that it does not spotlight every last detail.
Tonal Balance Musicality
91/100
Reviewers consistently describe a smooth, slightly warm and richly textured balance that avoids the lean or sterile character sometimes associated with switching designs. There is also repeated praise for its natural midrange body and musical flow, although StereoNET heard a crisper, drier and more incisive balance that calls for thoughtful system matching.
Dynamics
95/100
The RA280 earns especially strong praise for its seemingly effortless power, punch, authority and control with demanding loudspeakers. Reviewers describe lively, physical and highly dynamic playback, with substantial bass weight and headroom; 6 Moons heard a softer, less transient-explicit manner than some alternatives, but not a lack of power.
Soundstage Imaging
91/100
Image specificity, instrumental separation and airy spatial presentation are recurring strengths, with several reviewers hearing a broad, deep and even holographic stereo image. Stereophile found depth somewhat limited on one recording, and StereoNET judged the stage less expansive than the NAD M33 and Rega Aethos.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
92/100
Reviewers repeatedly praise the solid aluminium-and-steel enclosure, tidy internal construction, fine-machined fascia and substantial metal remote. Reports of cool, quiet operation after extended use further support the impression of carefully executed hardware.
Features Connectivity
87/100
The analogue-focused layout includes three RCA line inputs, one balanced XLR input, an MM phono stage, subwoofer output, remote control and useful bass/treble controls. It omits digital inputs, streaming, a headphone socket and a preamp-direct input, so digital-focused systems will need external components.
Value for Money
95/100
At approximately $2,995 to $3,395, reviewers repeatedly portray the RA280 as unusually compelling for its class. Stereophile says its sonic virtues are out of proportion to its price, HiFi Huff calls it a steal, and hi-fi+ finds that its execution belies the asking price.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
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Specifications
- Size
- 16.9” W x 13.98” D x 4.06” H
- Weight
- 20.94 lbs
- Body
- Solid Aluminum, Rust-proof Steel
- FTC Power Output Rating (RMS)
- 250W x 2ch (8Ω, 20Hz-20kHz, THD 0.07%)
- Frequency Range
- 10Hz~80kHz (8Ω, 1W)
- Load Impedance
- 8Ω
- Mono
- 1Wrms (2.218 dBu)
- Balance Input
- 600mV (≈ 250W x 2ch)
- Unbalance(Line1,2,3) Input
- 600mV (≈ 250W x 2ch)
- Phono(MM) Input
- 5mV (≈ 250W x 2ch)
- Unbalance(Line1,2,3) Input
- 47kΩ
- 20Hz ~ 20kHz
- +0, 0dB (≈ 250W x 2ch, 8Ω Speaker Output)
- 10Hz ~ 66kHz
- +0, -1dB (≈ 250W x 2ch, 8Ω Speaker Output)
- 10Hz ~ 85kHz
- +0, -3dB (≈ 250W x 2ch, 8Ω Speaker Output)
- 20Hz ~ 20kHz
- +0, 0dB (≈ 1W x 2ch, 8Ω Speaker Output)
- 10Hz ~ 66kHz
- +0, -1dB (≈ 1W x 2ch, 8Ω Speaker Output)
- 10Hz ~ 85kHz
- +0, -3dB (≈ 1W x 2ch, 8Ω Speaker Output)
- Balance & Unbalance(Line1,2,3) Input
- 0.05% (8Ω, 1W to 250W, 1kHz)
- Speaker Output
- >250 (≈ 250W x 2ch)
- Balanced / Unbalanced / Phono(MM)
- 109dB / 109dB / 85dB (≈ 250W x 2ch)
- Speaker Output
- 30mΩ (≈ 250W x 2ch)
- Bass(100Hz) / Treble(10kHz)
- ±15dB (≈ 1W x 2ch, Speaker Output)
- Turnover
- 500Hz (+13dB@100Hz) (≈ RIAA)
- Roll-off
- 2.1kHz (-13.74dB@10kHz) (≈ RIAA)
- Output Power
- 500W (SMPS) (+ Maximum Output: 600W)
- Input Voltage
- AC100-240V, 50/60Hz (Standby Mode Power Consumption < 0.5W)
- Trigger In
- Voltage can be turned on 3.3V~ 12V
- Trigger Out
- Voltage can be turned on 12V
- IR Input
- 38kHz Infrared Ray (Within 10m of Operating Distance)
Manufacturer's Description — Hifi Rose - USA
RA280 At A Glance
- Stereo integrated amp with balanced and phono inputs.
- Advanced Class D amplification with GaN FETs for smooth, accurate sound.
- 250 watts x 2 into 8 ohms; 250 watts x 2 into 4 ohms.
- Treble and bass controls.
- Tone control bypass switch.
- Illuminated analog level meters (3-level dimmer for front-panel illumination).
- Analog stereo RCA phono input for moving magnet cartridges.
- 3 line-level analog stereo RCA inputs.
- Mono RCA output for connecting a powered subwoofer.
The HiFi Rose RA280 Integrated Amplifier exemplifies the seamless blend of advanced technology and elegant design, crafted to deliver an unparalleled audio experience. Building on the legacy of its predecessor, the RA180, this new model integrates the revolutionary Advanced Class D amplification technology to offer both high efficiency and superior sound quality.
Innovative Advanced Class D Technology
HiFi Rose redefines digital amplification with the RA280’s Advanced Class D technology, featuring next-generation GaN (gallium nitride) FETs. This breakthrough innovation surpasses traditional Class D amplifiers, delivering sound quality comparable to analog while maintaining superior efficiency and power. The RA280 achieves near-perfect linear output with minimal distortion, ensuring smooth, natural sound reproduction. Covering a wide frequency range from 20 Hz to 100 kHz, the RA280 faithfully renders every audio detail, creating a truly immersive and realistic listening experience.
Superior Mono Amplifier Design with Advanced Filtering
The RA280 stands out with its two completely separated mono amplifier modules, each delivering 250 W (4 Ω and 8 Ω) to the left and right channels, for a total of 500 W in stereo mode. HiFi Rose’s advanced two-stage analog filter technology ensures top-tier sound quality. The LC filter provides exceptional frequency response, with -1 dB attenuation up to 65 kHz and -3 dB up to 85 kHz, effectively reducing carrier noise from Class D amplifiers. This results in pristine, detailed sound, enhanced spatial resolution, and a natural analog feel.
Precision Phono Amplifier for Moving Magnet Cartridges
Elevate your vinyl listening experience with the RA280’s precision phono amplifier, designed for moving magnet cartridges. This high-performance amplifier, activated via a simple switch, amplifies delicate audio signals without distortion. HiFi Rose’s high-precision compensation circuitry delivers sound that is remarkably close to the original recording. This ensures rich, vivid detail and superior sound quality, providing an immersive and high-fidelity music playback experience that brings your records to life.
HiFi Rose’s RA280 features a state-of-the-art power supply, utilizing silicon carbide FETs for superior efficiency and reduced heat compared to traditional silicon FETs. This innovative design ensures optimal power delivery and stability. The inclusion of a 2.5 power factor correction circuit and a high-capacity condenser maintains excellent performance even under rapid load changes, ensuring consistent and high-quality sound. The fourth-generation Silicon Carbide (SiC) FET technology enhances power output while minimizing heat, supporting deep bass and precise treble tones for powerful and accurate audio reproduction.
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Authorized dealers for Hifi Rose - USA RA280
- Absoulute Audio plus Video — in-store — Aiken, South Carolina, United States (website)
- Resolution A/V — in-store — New York City, New York, United States (website)
- The Music Room — online and in-store — Erie, Colorado, United States (website)
- 3mA Audio — online and in-store — Houston, Texas, United States (website)
- A Tube High Fidelity — online and in-store — Almere, Flevoland, Netherlands (website)
- A/V Solutions — in-store — Pleasanton, California, United States (website)
- Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
- Acoustic Technologies — online and in-store — Montréal, Québec, Canada (website)
- Acton Gate Audio — online and in-store — Cymru, United Kingdom (website)
- Addicted to Audio — online and in-store — Epping, Victoria, Australia (website)
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