Niimbus US 5

Headphone and active-speaker amplifier

The Niimbus US 5 is the improved successor to the acclaimed US 4 and US 4+. It combines a reference-class headphone amplifier and a high-end preamplifier in one compact unit – ideal for headphones, power amplifiers and active speakers.

Thanks to its sophisticated preamp stage, the US 5 drives not only headphones but also power amplifiers or active loudspeakers. Headphone and rear line outputs can be switched separately from the front panel.

Remote Control

A solid aluminium remote allows infrared control of motorized volume, mute, input selection and headphone / line-out switching.

Technology Highlights

• Ultra-low noise: extremely low internal gain – self-noise virtually inaudible.
• High output voltage: ±50 V internal rails – ideal for high-impedance headphones.
• High output power: powerful amplifier stages – perfect for low-impedance and planar headphones.
• High damping factor: extremely low output impedance – perfectly linear frequency response.

Connections & Features

• Remote control for input, output, volume and mute
• 3 analog stereo inputs: 2× RCA, 1× XLR
• Pre-Gain: –18 … +24 dB
• Motorized volume and manual balance
• 4 amplifier stages: 7000 mW Pmax @50 Ω, 32 V RMS @600 Ω
• Headphone output monitoring (DC & clipping)
• Individually switchable headphone and line outputs
• Headphone outputs: 4-pin XLR, 4.4 mm Pentaconn, 2× 6.3 mm
• Line-out: RCA & XLR, ±12 dB adjustable
• 2 toroidal transformers, >50,000 µF capacitance

Package Contents

• Niimbus US 5
• User Manual
• Remote Control

Technical Data