Niimbus US4+

Niimbus is het topmerk van Lake People. Ontwerper Fried Reim van Lake People heeft 30 jaar ervaring in de professionele wereld en is ook bekend van de succesvolle Violectric consumentenlijn. In de Niimbus US4+ is al deze ervaring samengebracht in een ultieme hoofdtelefoon/lijn-versterker. De Niimbus US4+ is gebaseerd op de ervaringen die zijn opgedaan bij de ontwikkeling van de bekende Violectric V281, maar het circuit is volledig nieuw ontworpen. De Niimbus US4+ valt op door zijn natuurlijke klank (ook in het laag), ruimte en vanzelfsprekende detaillering. Mede door het lage ruisniveau is het dynamisch bereik zeer overtuigend. Dit is de +-versie met een ingebouwde lijn voorversterker (incl. relaisgestuurde AB).


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Niimbus, the new high-end brand from the engineers of Lake People.
In comparison to the US 4, the US 4+ model offers an additional unbalanced input as well as buttons on the front for input selection. The line and headphone outputs can be activated independently, making the US 4+ also suitable as an audiophile preamplifier. Further features such as a balance control, an almost inaudible reed relay volume control and an integrated remote control make the US 4+ the ultimate headphone amplifier.
Based on the experiences of more than three decades of Lake People development, as well as the technical and optical demands of the Violectric brand raised to a new, previously unknown quality level, the name extension of the Niimbus devices is therefore logically “Ultimate Series”. Devices with the Niimbus label stand for a special design, extraordinary technology and uncompromising quality – of course “Handmade in Germany”. Niimbus US 4 and US 4+ represent the uncompromising further development of the recognized, high-quality headphone amplifiers from Violectric. During the three years of development work, no compromises were made in circuit design, components or materials to create a headphone amplifier with outstanding audiophile properties. The completely newly developed channel-separated and 100% analog amplifier circuit has hand-selected audiophile components and has been optimized for lowest noise and highest performance even on particularly low-impedance headphones. In combination with the oversized power supply and the associated high supply voltage, you get an extremely detailed and tidy sound image, which plays absolutely relaxed in every setting and with every headphone and represents every nuance of the music.

Color: Black
Headphone Out: 1 (bal., XLR 4-pole), 2
Chassis: Desktop
Amplifier Channels: 2
Signal to Noise Ratio (SNR): > 129 dB (A-gew.)
Additional Features: Several Protection circuits
Frequency range: 0 – 200 kHz (-0,5 dB)
Input impedance: < 15 Ohm
Inputs / Outputs: 2 / 2 (bal. RCA), 2 / 2 (bal. XLR)
Max. output level:
32,4 dBu (600 Ohm) | 30,4 dBu (100 Ohm) | 27,7 dBu (50 Ohm) | 24,8 dBu (32 Ohm) | 19,4 dBu (16 Ohm) | 13,3 dBu (32 Ohm) | 7,3 dBu (16 Ohm)
Crosstalk: -106 dB (1 kHz) | -105 dB (15 kHz)
Total-harmonic-distortion (THD): 0,00063 % (@ 10V/100 Ohm, 1W) | 0,00071 % (@ 4V/32 Ohm, 0,5W)
Weight: 7,00 kg