RED WINE AUDIO ISABELLA

Pre owned. In good condition. Shows signs of wear on the top panel, visible in the photos. Supplied with external power supply and remote control. Original packaging not included.

The Red Wine Audio Isabella is a tube preamplifier designed to deliver natural, engaging musical reproduction through a fully battery-powered architecture. This approach eliminates noise from the AC mains, preserving signal integrity and contributing to a clean, low-noise performance. Handcrafted construction, a solid chassis, and carefully selected components ensure long-term reliability and consistent operation.

Its tube preamplifier stage produces a full-bodied, harmonically rich sound with particular emphasis on the natural texture of instruments and vocals. The presentation is stable and convincing, with well-defined three-dimensional imaging, deep and controlled bass, and the ability to reproduce dynamic contrasts without compression. Piano, acoustic instruments, and voices are rendered with weight and presence, maintaining a balanced character that encourages long, fatigue-free listening sessions.

The battery power supply also provides instantaneous current delivery, ensuring excellent dynamic response during demanding musical passages. This results in deep, tight, and articulate bass, supported by convincing macrodynamics and a strong sense of energy. Rather than pursuing an analytical or overly bright presentation, the Isabella emphasizes density, solidity, and realism, offering a sonic character that recalls the weight and coherence typically associated with analog sources.

The high-frequency range remains detailed without excessive emphasis, contributing to a smooth and refined presentation even with challenging recordings or expressive female vocals. Ambient information is reproduced naturally, while the soundstage retains impressive width and depth, highlighting the physical presence of performers rather than focusing exclusively on the finest high-frequency details.

The modular design allows the preamplifier to be configured according to individual requirements through optional upgrades such as an integrated digital-to-analog converter or a dedicated headphone amplifier. Multiple inputs and outputs provide flexible connectivity with a variety of source components and power amplifiers, making the Isabella suitable for a wide range of high-end audio systems while maintaining a balanced, dynamic, and coherent musical presentation.

Technical specifications:

• Input impedance: 50 kΩ
• Output impedance: less than 1 kΩ
• Frequency response: 10 Hz – 120 kHz (±0.5 dB)
• Gain: 0 dB; 12 dB (selectable)
• Transformers in the signal path: none
• Battery: Red Wine Audio 25.6 V LiFePO4 battery pack
• Battery charger: 30 V / 2 A LiFePO4 charger; input voltage 100–240 V AC, 50/60 Hz
• Battery life: approximately 6 hours with the optional Isabellina DAC; approximately 8 hours without the Isabellina DAC
• Dimensions (W × D × H): 30.5 × 26.7 × 8.9 cm
• Weight: approximately 4.5 kg (without battery charger)