HiFi Rose RA280: Superior Class D amplifier

HiFi Rose RA280 is a complete amplifier that inherits the innovative technologies used in the already familiar HiFi Rose RA180. Enjoy pure natural sound, as close as possible to the original sound. In the concept of the amplifier, Korean engineers laid the ideal sound that crosses the boundaries between digital and analog technologies due to excellent linearity. HiFi Rose RA280 offers a special listening experience that allows you to feel the true essence of music.

Class D amplifiers using the latest technology are superior in a number of metrics to amplifiers in Class A or Class AB. However, despite these advantages, many expert measurements show a lack of sound quality compared to analog amplifiers due to the limitations of digital circuits. To overcome these limitations, Hi-Fi ROSE developed “Class AD” amplifier technology using GaN transistors and applied this technology in the RA180 (complete amplifier), RS520 (all-in-one system) and the RA280.

An innovative new material, Gallium Nitride, dramatically improves linearity and overcomes the limitations of Class D amplifiers, delivering smooth, natural reproduction of audio material with the smoothness of an analog amplifier. The result is analog-like quality + Class D efficiency and power.

The HiFi Rose RA280 also offers the functionality of a built-in MM phono preamplifier, which is capable of amplifying very weak audio signals captured by the pickup head with high precision and processing them without distortion. We have already tested the built-in phono preamplifier in the flagship HiFi Rose RA180 and were inspired by the results.

Rose RA280 Specifications

• Number of channels: 2
• Power (8 Ohm, W): 2 x 250
• Power (4 Ohm, W): 2 x 250
• Frequency range (Hz-kHz): 10 – 85
• S/N ratio (dB): 109
• Harmonic distortion factor (%): 0.007
• Input impedance: 47 kOhm
• Sensitivity (mV): 600
• Damping factor: 250
• Phono preamplifier: MM
• Remote control: Included
• Features: State-of-the-art GaN transistors
• Connectors (input):
  • Analog audio: 1 x XLR, 3 x RCA, 1 x Phono (RCA)
  • Other: 1 x 3.5 mm trigger
• Connectors (output): 1 x (RCA) subwoofer
• Power consumption (W): 500
• Supply voltage (V): 100 – 230
• Dimensions (mm, WxHxD): 430 x 355 x 103
• Weight (kg): 9.5

 

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