Phone Phone E-mail E-mail
Please add another product for comparison.

Product


Header nuPower A

nuPower A

  • High-end stereo power amplifier with Class AB technology and enormous power reserves
  • 1150 W per channel (4 Ohm) for hi-fi enthusiasts and dynamics at the highest level
  • Ideal complement to the nuControl 2 sound manager for the best possible Nubert chain
  • Mono operation via the switch on the back for ultimate power: 1 x 2200 W
  • Convinces with: 2300 watt power supply, A + B circuit, XLR and RCA inputs
  • Modern classic: Excellent design with clear form language in solid metal housing
nuPower A

More power

The nuPower A is a Class AB power amplifier and our masterpiece in amplifier construction. Its massive appearance is not just for show, but part of the elaborate passive cooling concept. This allows the waste heat of up to two times 1150 watts to be tamed. With top technical values for signal-to-noise ratio and distortion values, we guarantee you good sound from soft tones to maximum level.

Details


nuPower A mit nuControl 2 und nuVero 140

Mono mode

The nuPower can not only be operated as a stereo power amplifier for two speakers, but also offers a switch on the back that turns it into an amplifier in mono mode with a fabulous 2200 watts peak power. This guarantees sufficient dynamic reserve for any application. In addition, you can switch between Cinch and XLR input and raise the damping factor by 6 dB for even more level.

Sets

The best match for the nuPower A is our nuControl 2 sound manager, which is an equal player not only visually but also in terms of noise behaviour. In addition, you will of course find the matching playback devices among our speakers that can handle so much power. For inspiration, we recommend our set offers for the nuPower A.

nuPower A mit nuControl 2 und nuPyramide

Class A amplifier

The nuPower A relies on a Class A amplifier coupled to the B-type for an energy-efficient solution, with minimal distortion and high signal-to-noise ratio. Thus, the completely analogue power amplifier set standards not only visually, but also technically. Its advantage: more dynamics with the same size.

Powerful power supply unit

The power supply of the nuPower A has to withstand high loads in order to provide up to 2300 watts for the power amplifiers. For this purpose, components from the automotive industry are used so that the corresponding currents can be fused and passed on. Your advantage: maximum reliability for a long-lasting product.

nuPower A von Innen

Full power

The nuPower A has a range of circuitry, for the best possible performance. Soft ramping is used to slowly draw the current after switching on, so that the fuse of your house installation does not drop. To prevent ground hum, there is the ground lift switch on the bottom. Your advantage: clever solutions that make everyday use less problematic.

Cutting belt transformer

The nuPower A does not rely on conventional toroidal transformers, as these build up a magnetic field in all directions. The advantage of the ribbon transformers is that almost no field is built up at the top. This is where the power supply of the nuPower A is located, so it can work without affecting the signal. Your advantage: less distortion and clearer sound.

nuPower A Trafo
nuPower A Seitenansicht

Colours and design

Our nuPower A takes its cue from classic hi-fi forms and updates them. The large silver aluminum rotary knob stands out strikingly against the black housing and facilitates operation. Combined with the nuControl 2 preamplifier, the result is a harmonious combination that also convinced the design editors of Reddot and iF.

Responsible person

Nubert electronic GmbH

Address

Nubertstraße 1, 73529 Schwäbisch Gmünd, Deutschland

Contact

Email: info@nubert.de Phone: +49 07171 - 8712-0

Safety Instructions

Before connecting and operating the device, the entire user manual, particularly the safety instructions, must be read thoroughly. For your own safety, strictly adhere to all warnings and safety instructions in this manual and on the device. No work on the device other than the actions described herein should be performed by the user.

Intended Use

  • The device is designed exclusively for audio playback in dry indoor environments.
  • Use the device only as described in this user manual.
  • Any other use (especially safety-critical or medical applications) is considered improper and may result in property damage or personal injury.
  • Nubert electronic GmbH accepts no liability for damages caused by improper use.
  • Before operating the device, carefully read the safety instructions and installation guidelines.
  • Keep this document accessible at all times and pass it on to any future owners.

General Information

Never operate this device unattended!

Risk of Electric Shock!

To avoid the risk of electric shock, the device must not be opened by the user. There are no user-serviceable parts inside. Service and repairs should only be performed by qualified professionals authorized by Nubert. For service, contact Nubert electronic GmbH directly (info@nubert.de)!

Risk of Suffocation!

Never let children use the device or play with the packaging unattended! There is a risk that children could get entangled in the packaging film and suffocate. Ensure that children cannot remove small parts from the device! These parts could be swallowed, leading to choking hazards. In case of swallowing any parts, consult a doctor immediately!

Risk of Injury or Damage!

Handle the device with care when moving it to avoid injuries and damage!

Caution!

Since this device can only be fully disconnected from the mains by unplugging the power cord at the rear or the wall socket, it must be placed so that you have free access to the power input or plug. If any of the following conditions occur, immediately turn off the device and unplug it from the mains. Contact Nubert electronic GmbH (info@nubert.de)!

  • The device itself has been damaged or has fallen.
  • The power cable or plug is damaged.
  • Objects or liquids have entered the device.
  • The device has been exposed to excessive moisture or rain.
  • The device is not functioning properly or shows a significant reduction in performance.
  • The device emits a burning smell, develops smoke, or makes unusual noises.

Only use accessories recommended by Nubert!

Placement Instructions

Caution!

An unstable placement location can lead to damage to the device.

  • Place the device on a flat, stable surface and ensure it cannot be knocked over!
  • Ensure that no unintended tension is applied to the cables to avoid pulling down the device or damaging the connection ports!
  • Keep strong mechanical shocks away from the device!

Caution!

Excessive heat buildup inside the device can shorten its lifespan or lead to a fire.

  • Never cover the device!
  • Do not operate the device near heat sources such as radiators or stoves!
  • Do not expose the device to direct sunlight!
  • Never place burning candles or similar open flames on the device!
  • The ventilation openings or heat sinks of the device must not be covered. Ensure at least 10 cm of free space around the device! If placed in a cabinet or shelf, ensure adequate air circulation.
  • Do not place the device on soft surfaces such as beds, sofas, or carpets to avoid blocking ventilation openings on the bottom.

Danger of Explosion!

Installing the device in unsuitable locations can cause explosions. Do not use the device:

  • In environments prone to fire or explosions!
  • At extremely low or extremely high temperatures!
  • Near flammable gases or vapors!
  • In areas with heavy dust!
  • Near flammable materials!

Placement Instructions

Risk of Electric Shock!

The device contains mains voltage internally. There is a risk of fatal electric shock.

  • Never touch the device with wet hands!
  • Use the device only in a dry location!
  • Do not operate it outdoors or in damp rooms!
  • Protect the device from all types of liquids, including dripping and splashing water.
  • Do not place containers with liquids (e.g., flower vases) on or near the device!
  • If the device is brought from a cold environment into a warm room, condensation may form inside. Wait until it reaches room temperature and is dry before turning it on!
  • Do not allow objects or foreign bodies to enter through the ventilation slots.
  • If the device comes into contact with liquids or objects enter the interior, unplug it immediately and contact Nubert electronic GmbH!

Connections

General Connection Instructions

  • Connect the device to the mains only after all other connections have been made!
  • Use only the designated cables or connectors for the connections! Otherwise, damage or malfunctions may occur.
  • If you need to disconnect connections on the device, always pull the plug, never the cable!
  • Ensure that all plugs are firmly seated in their sockets!
  • Use only cables and accessories recommended by Nubert!

Caution!

Power surges in the electrical grid (e.g., due to lightning strikes) can damage or destroy the device.

  • A surge protector can provide some safety against excessive voltage in the power grid.
  • For maximum safety, fully disconnect your devices from the power grid and antenna systems during thunderstorms or the risk of lightning strikes. Unplug the power cord from the socket and any antenna connectors from your HiFi system!
  • If the device is not used for an extended period or is left unattended, disconnect the power supply. Unplug the power cord from the socket!

Risk of Electric Shock!

Faulty power supply systems or excessive mains voltage can result in electric shocks.

  • All power supply or antenna systems connected to the device must comply with applicable legal regulations and standards and be professionally installed by a licensed installation company.
  • Only use the supplied power cable to connect the device. The power cable and its plug must not be modified under any circumstances.
  • Ensure that the mains voltage at your location matches the device's requirements! The correct power supply information can be found on the label on the back of the device. The device must not be connected to other power supplies.
  • When laying power cables, ensure they cannot be damaged (e.g., by heat or mechanical stress). Pay particular attention to areas around plugs and distributors!

Unpacking

Caution!

When unpacking your Nubert nuPower A, avoid using sharp or pointed objects to prevent potential damage to the casing. Keep the packaging for future transportation of the device.

Device Care

Caution!

Improper handling of the device may result in damage.

  • Always unplug the power cord before cleaning the device!
  • Clean the device regularly with a soft, slightly damp cloth. For stubborn stains, mild soapy water may be used. Never use harsh cleaning agents or solvents such as gasoline, alcohol, or similar substances!
  • Before resuming operation, ensure that all connections are correct, there are no short circuits, and the device is completely dry.
Nubert Hörraum nuBoxx

Accessories

We not only build exceptional speakers and electronics but also offer the right accessories. From cables to adapters, you'll find everything useful for our products.

Nubert Gebäude

Attention to Detail

With us, you don't get off-the-shelf electronics, but always products with that certain something. This includes a special surface feel and innovative concepts that make our HiFi devices stand out. We neither add to nor take away from the signal. Therefore, our amplifiers provide no color to the sound, just pure, linear reproduction without any voodoo.

Nubert Gebäude

More Inside at Nubert

We develop all nuElektronik models in Schwäbisch Gmünd, optimizing every detail from the housing and drivers to the sound tuning by our engineers. Once mass production begins, our in-house quality management takes over. We inspect the appearance, technology, and sound to ensure you receive the best possible product. If you have any questions, give us a call, and our customer service team will address your concerns. Their long-standing experience and intensive training ensure fast and straightforward assistance.

Nubert Hörraum nuBoxx

Accessories

We don't just create exceptional speakers and electronics; we also offer the right accessories. From cables to adapters, you'll find everything useful for our products.

nuElektronik Überblick

Attention to Detail

With us, you won’t find off-the-shelf electronics, but always products with that special something. This includes unique surface textures and innovative concepts that make our HiFi devices truly special. We add nothing to the signal and take nothing away. That’s why you won’t find amplifier coloration with us, only linear reproduction without any gimmicks.

Nubert Gebäude

Nubert Offers More

We develop all nuElectronics models in Schwäbisch Gmünd. From the housing to the drivers and sound tuning, every detail is optimized by our engineers. Once mass production begins, our in-house quality management kicks in. We inspect the design, technology, and sound to ensure you receive the best possible product. If you have any questions, give us a call, and our customer service team will assist you. Their years of experience and thorough training ensure quick and hassle-free support.

X-Remote App

X-Remote App

With the Nubert X-Remote app, many functions can be conveniently controlled from your smartphone. In addition to the typical controls for volume and system status, the app allows precise sound adjustments – even using our X-Room Calibration feature on iOS. The app is available for free on the Google Play Store for Android and the Apple App Store for iOS.

Google Play

Apple Store

Listen to it now in our stores!

Test results


We are awarded. And proud of it.

About sound and luxury

nuControl X and nuPower A - power and comfort

Spitzenduo zum unschlagbaren Kurs

nuControl 2 und nuPower A: Spitzenduo zum unschlagbaren Kurs

"Endstufe des Jahres"

nuPower A: Audio Leserwahlsieger 2018

Selten schöne Kombination aus Substanz und Feinsinn

nuPower A: Goldklasse und Highlight

Red Dot: Best of the Best 2017

nuPower A - Red Dot: Best of the Best 2017

Referenz - der neue Maßstab in dieser Klasse

nuPower A: Referenz – der neue Maßstab

Referenzklasse

nuPower A: vereint große Kraft mit immenser Klangqualität

Referenzklasse

nuPower A: Referenzklasse

Accessories


We not only build exceptional loudspeakers and electronics, but also offer the matching accessories. So you can find everything useful for our products, from cables to adapters.

in-akustik Stereo Audio Cable XLR
Premium XLR cable
€63.00 / Piece

nuCable Audio 6
Stereo RCA Cable
€10.00 / Piece

nuCable Audio 9
High End Stereo RCA Cable
€40.00 / Piece

nuCable Banana
Premium banana plug
€29.00 / 4er Set

Content: 4 Stück (€7.25 / 1 Stück)

nuCable Exklusiv
Premium speaker cable
€249.00 / Piece

Content: 3 Meter (€83.00 / 1 Meter)

nuCable LS Silverline
Premium speaker cable
€8.00 / Meter

nuCable LS Studioline Flat
Flat speaker cable
€36.00 / Piece

Content: 6 Meter (€6.00 / 1 Meter)

nuCable massimo
High End speaker cable
€379.00 / Piece

Content: 3 Meter (€126.33 / 1 Meter)


Not the right one? We recommend taking a look at related products that you might like.

Outlet Model
Bluesound NODE
Network Player
€489.00 / Piece

-14 %
Colour on sale
nuBoxx B-70
Reference in class
€599.00 / Piece €698.00 (€99.00 saved)

Lowest price in the last 30 days before price reduction: €599.00 / unit
nuLine 334
Best in class
€1,375.00 / Piece

nuVero 140
True impressive
€2,395.00 / Piece

Limited
nuVero 170
True masterpiece
€3,950.00 / Piece

Reviews


4 of 4 reviews

5 / 5


5
4
3
2
1

Honest speakers - Honest reviews

Satisfied? Or can we do something better with our products? Then write us your review. Simply log in to your account and write the review of your order here.

Here with us, every review is checked for authenticity and is then approved. So you can be sure that the feedback you give us about our products is genuine.

Ulrich

21 April 2024

Der High-End Schreck

Alexander

15 March 2024

nuPower a

Alexander

25 November 2021

Feedback nuPower A, nuControl 2, nuVero 140

Jürgen

19 February 2021

Kraftmeier

Technical information


Subject to technical changes.

Device type and recommendations for use

As a stereo power amplifier, the Nubert nuPower A combines enormous power with audiophile sensitivity. It is the ideal complement to a playback chain consisting of a source player, preamplifier and loudspeakers. The balanced construction throughout, the selected components and the careful signal routing enable a particularly high sound purity.

With a continuous output power of 2x 540 watts (4 ohms) and a generously sized power supply that provides up to 2,300 watts, the nuPower A drives even power-hungry speakers and fully exploits the acoustic potential of a high-end system. To maximize output power, the nuPower A can be operated in mono mode. In this application, two nuPower A are combined to power a pair of speakers. Up to 1,150 watts (4 ohms) are then available per channel. Despite this concentrated power, no increased distortion values occur even at full modulation. The signal-to-noise ratio of 117 dBA and the total harmonic distortion (THD) of only 0.002 % meet the highest demands for sound purity and are, in our opinion, unique in this price range.

We especially recommend the nuPower A in combination with our preamplifier nuControl as well as with the loudspeakers of our top series nuVero. However, thanks to its versatile connection options (including a pair of XLR inputs and high-quality fine-thread terminals) and its flexible design, it also works harmoniously with other preamplifiers and speaker models. In doing so, the nuPower A drives up to two pairs of speakers, alternately or simultaneously. The enormous load stability makes it irrelevant whether the speakers are 2-ohm, 4-ohm or 8-ohm.

Connections

The nuPower A features a pair of XLR inputs (balanced) and a pair of RCA inputs (unbalanced), allowing it to be easily integrated into a stereo system. At the speaker terminal with four pairs of fine-thread screw terminals, you can choose to drive one or two pairs of speakers in stereo mode or one speaker in mono mode. A trigger input in mini-XLR format is also available (cable included). A complete list of the connections can be found under "Technical Data".

Housing and design

Appropriate for a high-end product is also the design and finish of the nuPower A - executed in a shapely housing of partly brushed, partly blasted aluminum, which is coated in high-quality matte black. With a width of 43 centimeters, it fits perfectly into standard AV shelves. Visually, nuPower A and our nuControl preamplifier form a perfect ensemble.

Controls

The nuPower A has only two front panel controls: a speaker selector switch (operating modes: a, b, a + b) and a standby button located below it. The volume is controlled via the preamp. Switching between mono and stereo mode is done via a toggle switch on the back. A 28-page manual explains all options and offers typical application examples.