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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.


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.


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.

Nubert Hörraum nuBoxx


Wir bauen nicht nur außergewöhnliche Lautsprecher und Elektronik, sondern bieten auch noch das passende Zubehör an. Damit findet sich von Kabeln über Adapter alles Nützliche zu unseren Produkten.

Nubert Gebäude

Liebe zum Detail

Bei uns erhalten Sie keine Elektronik von der Stange, sondern immer Produkte mit dem gewissen Etwas. Dazu gehört eine besondere Oberflächenhaptik und innovative Konzepte, die unsere HiFi-Geräte zu etwas Besonderem machen. Wir fügen dem Signal nichts hinzu oder lassen etwas weg. Daher gibt es bei uns keinen Verstärkerklang, sondern nur lineare Wiedergabe ohne Voodoo.

Nubert Gebäude

Bei Nubert ist mehr drin

Wir entwickeln alle nuElektronik Modelle in Schwäbisch Gmünd vom Gehäuse, über die Treiber bis hin zur klanglichen Abstimmung wird jedes Detail von unseren Ingenieuren optimiert. Nachdem die Serienproduktion angelaufen ist, beginnt in House unser Qualitätsmanagement. Dabei kontrollieren wir sowohl die Optik, Technik und den Klang, damit bei Ihnen das bestmögliche Produkt ankommt. Wenn bei Ihnen Fragen aufkommen, rufen Sie bei uns an und die Mitarbeiter unseres Kundenservice beantworten Ihr Anliegen. Die langjährige Erfahrung und intensive Schulung sorgen für schnelle und unkomplizierte Hilfe.

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


nuPower A: vereint große Kraft mit immenser Klangqualität


nuPower A: Referenzklasse


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 BFA 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)

-16 %
nuCable massimo
High End speaker cable
€379.00 / Piece €449.00 (€70.00 saved)

Content: 3 Meter (€126.33 / 1 Meter)

Lowest price in the last 30 days before price reduction: €379.00 / unit

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Bluesound NODE
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nuBoxx B-70
Reference in class
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nuLine 334
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nuVero 140
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€2,395.00 / Piece

nuVero 170
True masterpiece
€3,950.00 / Piece


4 of 4 reviews

5 / 5


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21 April 2024

Der High-End Schreck


15 March 2024

nuPower a


25 November 2021

Feedback nuPower A, nuControl 2, nuVero 140


19 February 2021


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.


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.


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.