The Nembrini Audio JMP Pro Guitar Amplifier plugin captures the essence of classic Marshall JMP1 preamplifier tones through four distinct channels: OD1, OD2, Clean1, and Clean2. Each channel delivers pure, rich sound tailored for various guitar styles, allowing players to access a wide sonic palette. The amplifier section is powered by virtual EL34 tubes configured in a class AB push-pull setup, providing authentic valve warmth and dynamic response with presence, volume, and power controls.

Beyond the amplifier core, the plugin features a comprehensive effects section including digital delay, analog modulations, ambient reverb, filters, an analog noise gate, and a studio-quality compressor. These effects enhance tonal shaping and add depth to the sound, enabling musicians to sculpt their guitar tones precisely. The cabinet selection offers six different guitar cabinets paired with four microphone simulations, complete with adjustable on/off axis positioning, continuous mic placement, and distance controls for realistic room ambiance.

The included impulse response loader supports up to three third-party IRs, which can be blended with volume, pan, phase, solo, and mute options for flexible tonal customization. A built-in browser simplifies managing and selecting impulse responses, making it easy to integrate personal or external cabinet simulations. The mixer section allows fine control over mic levels and ambience, ensuring a balanced and polished final guitar tone within any mix.