Rose RA280

Specifications

• Amplifier Type: Stereo Integrated Amplifier (Class AD)

• Output Power: 250 W × 2 channels (into 4 Ω and 8 Ω)

• Amplifier Modules: Dual-mono design

• Power Supply: Silicon Carbide FET + high-capacity super-capacitor

• Filter: Two-stage analog LC filter to reduce class‑D switching noise

• Frequency Response:

  • Speaker output: 10 Hz – ~85 kHz (-3 dB)

• Total Harmonic Distortion (THD): ~0.007% (at 125 W)

• Damping Factor: > 250

• Signal-to-Noise Ratio (SNR):

  • Line inputs (balanced/unbalanced): ~109 dB

  • Phono MM: ~85 dB

• Inputs:

  • 3 × RCA line-level

  • 1 × Balanced XLR

  • 1 × MM Phono (moving magnet)

• Input Sensitivity:

  • Balanced: ~600 mV

  • Unbalanced Line: ~600 mV

  • Phono MM: ~5 mV

• Input Impedance:

  • Line: 47 kΩ

  • Phono MM: 47 kΩ

• Tone Control:

  • Bass (100 Hz) / Treble (10 kHz): ±15 dB

  • Bypass switch for tone controls

• Subwoofer Output: 1 Vrms mono

• Output Impedance: ~30 mΩ

• Power Consumption / Voltage: AC 100‑240V, 50/60Hz

• Dimensions: 430 mm (W) × 355 mm (D) × 110 mm (H)

• Weight: ~9.5 kg

• Chassis / Build: Solid aluminum + rust‑proof steel

• Remote: IR remote included

• Other Features:

  • Illuminated analog VU level meters (dimmable)