Niimbus at Audio46

3 year warranty Special Order

Niimbus US 5 Pro Headphone Amplifier

Special order

Important Notice:
• This item is noncancelable and nonreturnable
• Your card will be charged after you place your order
• It can take 3 to 4 weeks to ship out to you

Regular price $6,599.00 Sale Save $-6,599.00 (Liquid error (sections/product-template line 208): divided by 0% OFF)

Earn up to 32995 points in rewards. Learn more.

Found a better price?
We can match it

Financing options

Product SKU: US5 Pro


Email me when available

Email me when this product is in stock again

(Fun fact: By filling out this form, you let us know there's demand for this item!)

We will only send you a follow-up email once the product becomes available. Your email address will not be shared with anyone else.

We are an Authorized U.S. Dealer

Get FREE U.S. shipping on special orders
General 30 Day Return/Exchange Policy

Need help or product is sold out? Call (212) 354-6424, Chat or Email us

Product Details from the Brand

Any mention of "us," "we," "our," etc is by Niimbus, not Audio46

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

Born from the experience of more than three decades of Lake People development, as well as the technical and visual claims of the Violectric brand lifted to a new, previously unknown level of quality, the name addition of 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 5 and US 5 Pro represent the uncompromising evolution of the renowned, high-quality headphone amplifiers from Violectric. During the three years of development work, no compromises in circuit design, component and material costs were made to create a headphone amplifier with outstanding audiophile characteristics.

The completely redeveloped channel-separated and 100% analog amplifier circuit features hand-selected audiophile components and has been optimized for lowest noise and highest performance even on very low-impedance headphones. In conjunction with the oversized power supply and the associated high supply voltage you get an extremely detailed and tidy sound that plays in any setting and with any headphone absolutely relaxed and represents every nuance of the music.

The US5 Pro adds an additional balanced headphone connection. Since the 4.4mm Pentaconn connector has gained popularity as a new balanced headphone connection standard we have decided to add this feature and renamed the the product the US5 Pro. All other features and specs remain the same as the US4+.

The US5 also adds the 4.4mm Pentaconn connector along with every other feature from the + plus model except for the relay volume option. We have found the US4 was not very popular and most customers wanted to simply choose between a standard Alps potentiometer or the relay volume option without sacrificing any of the other features.

*The only difference between the US5 and US5 Pro will be the addition of a 256 step relay volume control on the plus version.


  • 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)
  • Sym. headphone output (4.4mm Pentaconn)
  • 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
In-/Output 2 / 2 channel (sym. XLR)
Headphone outputs: 1 (sym., XLR 4-Pol), 2
Amplifier channels: 2
Frequency response: 0 - 200 kHz
Output impedance: < 15 Ohm
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)
Noise ratio (SNR): > 129 dB (A-wt.)
Distortions (THD): 0.00063 % (@ 10V/100 Ohm, 1W) _ 0.00071 % (@ 4V/32 Ohm, 0.5W)
Crosstalk: -106 dB (1 kHz) _ -105 dB (15 kHz)
Extras: various protection systems
Casing: desktop
Color: black

Product Reviews


Your cart

Trouble with payment options in checkout?


Go through checkout faster with our Express Checkout options: