Niimbus US4+ Ultimate Series Headphone Amplifier

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2019

New product

4 096,72 €

Available for immediate shipping.
Warning: Last items in stock!

 
Description

Niimbus, the new high-end brand from the engineers of Lake People.

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+ represents the uncompromising further development of the recognized, high-quality headphone amplifier 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.

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.

Features

  • Two unsym. Stereo inputs (RCA)
  • Sym. stereo input (3-pin XLR)
  • Unsym. Stereo output (RCA)
  • Sym. stereo output (3-pin XLR)
  • Two unsym. headphone outputs (6.3 mm jack)
  • Sym. headphone output (4-pin XLR)
  • Balance regulator
  • Volume control via relay (256 levels)
  • Remote Control
  • Digitally controlled analogue signal path
  • Input selection at the front
  • Output selection at the front
  • Delayed activation with power-on
  • Immediate separation during power-off
  • DC protection
  • Overload protection
  • Over temperature protection
  • Ultimate circuit design
  • Channel-separated construction
  • Power Output: 7W per channel @ 50 Ohm

Details on the reed relays Volume control

The volume control has 256-steps regulation (in .4dB increments) based on reed relays. The contacts are located in a sealed glass tube which is filled with gas and operated magnetically. This solution is exceedingly precise, with perfect channel matching at all levels and plenty of steps for fine tuning. It has the added bonus of being nearly silent in terms of physical operation.

Differences between the Niimbus US4+ and the US4 model

US4+:

- one version/edition, no options, every US4+ will have the same features and performance
- remote included
- one 4-PIN XLR Headphone Out and 2x6,3mm, open to a Pentaconn connection but not likely
- NO Digi Inputs anymore Instead you will find 1xXLR, 2xRCA inputs (1 on the US4) and 1xXLR/1xRCA output
- reed relais volume control, 256 steps@0,4db (bonus: less noise than the V281's relais option)
- Balance control is back (remember V281)
- protection features: delayed power-on, instant cutoff, DC protection, Overload protection, Temperature monitoring and safe shutdown
- pregain in 7 steps: -15db, -12db, -6db, 0db, +6, +12, +18 dB
- about 12db less noise than the V281 under maximum stability ((balanced)
- 30V@600 Ohm
- 2x25W Tor. Transformers, 52.800 uF filtering capacity through Nichikon caps
- coupling capacitors will be polypropylen caps only

The US4 has everything the US4+ has, except the following features:

- relais based volume control
- remote
- front panel buttons for switching inputs (inputs can be selected on the back)
- balance control

Technical data:

Color:Black
Headhone Out:1 (bal., XLR 4-pole), 2
Chassis:Desktop
output impedance:< 15 Ohm
Amplifier Channels:2
Signal to Noise Ratio (SNR):> 129 dB (A-gew.)
Additional Features:Different protection function
frequency range:0 - 200 kHz
Inputs / Outputs:2 / 2 (bal. XLR)
max. output level:32,4 (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 and Dims7,50 kg - 350mmx280mmx80mm (width, depth, height)

Introduction to Lake People

Established in 1986, we have since become your partner for professional audio electronics. Following our motto “tools - not toys”, we achieved highest reputation during the past years amongst our customers. These are private studios, broadcasters and TV companies. Also airports, congress and exhibition centres count on the reliability of our products made in Germany. This all began under the roof of Rosgartenstrasse 13 in the city of Konstanz. Here, three young guys started with the development and manufacture of limiters and noise gates but not too successfully in the beginning. The commercial survival on a very low level was made possible by the production of headphone amplifiers. From 1989 on, the production range was extended to level matching and balancing amplifiers such successfully, that it came essential to move to larger premises.

Since 1991, the new address read: Haidelmoosweg 52. Due to the developement of the first german 20-bit A/D and D/A converters in the beginning nineties, the name Lake People resounded throughout the land. Suddenly, the company was regarded as a high-tech brand, with a highly positive effect on its public reputation. The growing know-how led to many new products in the analog and digital domain during the following years. Although some projects turned out to be flops, most devices met the customers' requirements, with the effect of continuous growth of the company. By the end of the nineties the 140 m² of Haidelmoosweg 52 went cramping.
Again, a move to new premises came necessary. As it was obvious that rental facilities would not meet the demands, we decided to put up our own building. The company site was constructed in 2000 in a new industrial park in Konstanz, Turmstrasse 7a, just a hundred metres from the lake. Also in 2000, Lake People was transformed into a Ltd. company.

 
Designer

Introduction to Violectric

... is a trademark and product line of Lake People electronic GmbH. Lake People electronic GmbH develops, manufactures and distributes products in the professional range, for broadcast, television, airports, exhibition halls, festival venues, theatres, large-scale installations, private studios and more. In the private sector as well, Lake People products become increasingly popular due to their outstanding quality.
The Violectric trademark and product line is specially intended to supply the Hi-Fi and High-End market with its specific requirements.

Who develops Violectric equipment?

Violectric devices are exclusively developed in Germany by the engineers of Lake People electronic GmbH. In doing so, the team of developers can draw on twenty years of experience and countless products for the pro-audio domain.

Who manufactures Violectric equipment?

Violectric devices are exclusively manufactured in Germany by Lake People electronic GmbH or contractors in the company's vicinity. Lake People - and by association Violectric - put high emphasis on domestic manufacturing. As well, all component suppliers are chosen in order achieve the main part of added value inland.


Introduction to Lake People

Established in 1986, we have since become your partner for professional audio electronics. Following our motto “tools - not toys”, we achieved highest reputation during the past years amongst our customers. These are private studios, broadcasters and TV companies. Also airports, congress and exhibition centres count on the reliability of our products made in Germany. This all began under the roof of Rosgartenstrasse 13 in the city of Konstanz. Here, three young guys started with the development and manufacture of limiters and noise gates but not too successfully in the beginning. The commercial survival on a very low level was made possible by the production of headphone amplifiers. From 1989 on, the production range was extended to level matching and balancing amplifiers such successfully, that it came essential to move to larger premises.

Since 1991, the new address read: Haidelmoosweg 52. Due to the developement of the first german 20-bit A/D and D/A converters in the beginning nineties, the name Lake People resounded throughout the land. Suddenly, the company was regarded as a high-tech brand, with a highly positive effect on its public reputation. The growing know-how led to many new products in the analog and digital domain during the following years. Although some projects turned out to be flops, most devices met the customers' requirements, with the effect of continuous growth of the company. By the end of the nineties the 140 m² of Haidelmoosweg 52 went cramping.
Again, a move to new premises came necessary. As it was obvious that rental facilities would not meet the demands, we decided to put up our own building. The company site was constructed in 2000 in a new industrial park in Konstanz, Turmstrasse 7a, just a hundred metres from the lake. Also in 2000, Lake People was transformed into a Ltd. company.

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Niimbus US4+ Ultimate Series Headphone Amplifier

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