NuPrime AMG STA-SE – High-End Stereo / Mono Power Amplifier Special Edition

The NuPrime AMG STA-SE is a high-end Class D power amplifier engineered to deliver reference-level audio performance for premium Hi-Fi and Hi-End audio systems. As the Special Edition evolution of the acclaimed AMG STA, this upgraded model introduces substantial improvements in circuitry, power supply design, and feedback management, resulting in even greater transparency, dynamics, and musical refinement.

Built around NuPrime’s proprietary Single-Ended Class A input stage combined with an advanced Double Feedback Class D amplification topology, the AMG STA-SE achieves an exceptional balance between analog musicality, ultra-fast transient response, and outstanding loudspeaker control. The sonic presentation is remarkably natural, featuring deep and articulate bass, highly detailed midrange reproduction, and smooth, extended high frequencies.

The Special Edition version incorporates an increased switching frequency up to 750kHz, aerospace-grade ultra-precision components, an optimized power supply architecture, and a completely redesigned secondary feedback circuit. These enhancements provide a wider and more holographic soundstage, superior instrument separation, improved focus, and exceptional micro-dynamic performance.

Configurable in both stereo and mono bridge operation, the AMG STA-SE delivers up to 300W into 8 Ohms in mono mode, driving even demanding loudspeakers with authority and effortless control. The compact CNC-machined aluminum chassis combines elegant aesthetics, excellent thermal efficiency, and superior structural rigidity consistent with the AMG series design philosophy.

Perfectly matched with the NuPrime AMG PRA preamplifier, the AMG STA-SE is an ideal solution for audiophiles seeking uncompromising realism, transparency, and musical engagement.

Key Features

• High-end stereo / mono bridge power amplifier
• Special Edition upgraded circuitry design
• Proprietary Single-Ended Class A + Double Feedback Class D technology
• Ultra-high switching frequency up to 750kHz
• Enhanced dynamics, transparency, and soundstage depth
• Aerospace-grade ultra-precision components
• Redesigned secondary feedback circuit
• High instantaneous current capability for demanding loudspeakers
• Selectable stereo or mono bridge configuration
• RCA and balanced XLR inputs
• Ultra-high 1MΩ input impedance
• Premium CNC-machined aluminum chassis

Technical Specifications