nuPower A-2
Available from Week 26
€3,690.00 Incl. VAT plus shipping
07171 87 12 0
Product
nuPower A-2
- High-end: A top-of-the-range Class A/B stereo power amplifier with immense power potential
- Impeccable: 2 x 400 W continuous power output at 4 ohms for signal amplification of the highest quality and dynamics
- Perfectly matched: The ideal power amplifier partner for our nuControl X-2 preamplifier – for truly authentic high-end sound from the Nubert system
- Concentrated power: 1 x 1200 W continuous power at 4 ohms in mono mode – easily switchable on the rear panel
- Fully equipped: With a 3000-watt power supply, A/B switching, and XLR and RCA inputs
- Ambient Line: A clean design crafted from high-quality materials – featuring two VU meters as a striking visual highlight
An elegant powerhouse
The nuPower A-2 is a high-performance power amplifier in a traditional full-size format. Behind the stylish front panel, crafted from black glass and silver-anodised, brushed aluminium, classic A/B amplifier technology is combined with state-of-the-art power supply technology. This hybrid design delivers exceptional sound performance across the entire power range, from the quietest tones to maximum volume. We guarantee top-class technical performance in terms of signal-to-noise ratio and distortion.
Details
Everything at a glance and under control
Two analogue VU meters form the defining feature of the nuPower A-2’s front panel. They provide constant feedback on the unit’s operating status and offer convenient brightness adjustment. Their classic, technical appearance reflects the heyday of the hi-fi era and visually emphasises the power potential contained within this power amplifier.
The elegantly designed, generously sized rotary control allows you to select the speakers (pair A, B, A+B) and the input (RCA, XLR).
Connectivity and Design
With RCA and XLR connections for two pairs of speakers, selectable input sensitivity and switchable mono mode, the nuPower X-2 is ideally suited to a wide range of applications in a variety of setups. The nuPower A-2 owes its elegant proportions – relative to its power output – which complement the nuControl X-2 high-end preamplifier, to its sophisticated cooling concept. Carefully selected, high-quality, precisely temperature-controlled fans ensure optimal operating conditions at all power levels. They are inaudible during normal music playback and guarantee maximum power output in combination with the slim design of this high-performance amplifier.
A powerful amplifier for stereo and mono
As well as serving as a stereo power amplifier for two speakers, the nuPower A-2 can also be used in mono mode. The switch is easily operated on the rear panel. In this mode, the amplifier delivers a powerful 1,200 watts of continuous power per channel – providing a dynamic reserve that ensures ample power is available even for the most demanding applications.
Dream Team
The nuPower A-2 power amplifier naturally forms a dream combination with our high-end nuControl X-2 preamplifier.
On the one hand, this is due to the coordinated design of the Ambient Line, featuring black glass fronts, matt silver accents on the panels and knobs, and the elegant silver edging.
At the same time, both components are also technically optimised for each other and have been developed to work in perfect harmony.
You will find the perfect playback devices for this concentrated energy and dynamism in our sophisticated loudspeaker ranges.
The Source of Power
The nuPower A-2’s power supply, which is extremely generously rated in terms of power output, can deliver up to 3000 watts – ensuring dynamic peak performance in all situations. As a modern switching power supply, it operates with exceptional energy efficiency and, thanks to its compact dimensions, enables the slimline design of the unit. It also guarantees high stability – even with low-impedance speakers and particularly demanding musical material.
Controlled and Efficient
The design of the nuPower A-2 is based on fully discrete Class A/B technology. With precise circuit design extending right through to the balanced preamplifier section – where, for example, thermally coupled input transistors are used – we lay the foundation for dynamic performance, optimised thermal characteristics and perfect sound tuning in line with our ideal of pure, natural sound.
High-tech delivers enjoyment and elegance
Current-stable MOSFET transistors, thanks to their exceptionally smooth characteristic curve, provide the foundation for the ultimate listening experience. They enable exceptionally smooth and precise sound reproduction right up to maximum power. The signal is routed in a fully balanced manner. The nuPower A-2 power amplifier thus sets standards not only visually but also technically: with proven technology that, when consistently implemented, delivers maximum dynamics from a compact and elegant chassis.
Sophisticated design with a heritage
With its design, which emphasises clear, fundamental contrasts in form and colour, featuring two large VU meters on the front panel, the full-size nuPower A-2 power amplifier pays a direct tribute to the heyday of the hi-fi era. The contrast between the black glass front and the silver accents of the contoured base, the control knobs and the fine line frame creates a timeless elegance that blends harmoniously into any living space.
Safety Instructions
Nubert electronic GmbH
Nubertstraße 1, 73529 Schwäbisch Gmünd, Deutschland
Email: info@nubert.de Phone: +49 07171 - 8712-0
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. 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.
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.
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 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.
Your purchase, our service
Whether before or after you buy, our customer service is here to help. If you have any questions about products, your order, returns or installation, our expert support team will help you quickly and easily. By email or phone, if you prefer. Because good service makes all the difference.
Test results
We are awarded. And proud of it.
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.
Content: 6 Meter (€6.00 / 1 Meter)
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Technical information
| Device type: | Class A/B stereo-power amplifier |
|---|---|
| Width: | 43,0 cm |
| Height: | 12,5 cm |
| Depth: | 36,5 cm |
| Weight: | 14,3 kg |
| Packaging dimensions (W x H x D): | 54,0 cm x 48,5 cm x 27,5 cm |
| Shipping weight: | 18,9 kg |
| Power consumption in standby mode: | 0,5 W |
| Power consumption in idle mode: | 60 W |
| Standard colour: | Black / Silver |
| Color: | Black/Silver |
| Scope of delivery: | nuPower A-2, mains cable, mini XLR (trigger cable), documentation |
| Manufactured in: | China |
| Min - Max impedance: | 2-8 Ohm |
| Continuous power: | 2 x 400 W at 4 ohms 2 x 220 W at 8 ohms / 1 x 1200 W at 4 ohms 1 x 800 W at 8 ohms |
| Channels: | 2 |
| Music output: | 2 x 500 W at 4 ohms 2 x 275 W at 8 ohms / 1 x 1500 W at 4 ohms 1 x 1000 W at 4 ohms |
| Power amplifiers: | 2 |
| XLR inputs: | 1 pair of XLR connectors |
| Audio cinch inputs: | 1 pair of RCA connectors |
| Trigger inputs: | 1x 12 V Mini-XLR |
Product type and recommended use
The Nubert nuPower A-2 is a top-of-the-range stereo power amplifier with a fully analogue, balanced signal path. It combines outstanding performance with exemplary audiophile finesse and transparency. As the ideal link, it completes the playback chain between the source component/preamplifier and the loudspeakers.
With carefully selected components and its fully discrete design, it delivers exceptionally high sound purity.
Its continuous output power of 2 x 400 watts (4 ohms) and the generously dimensioned power supply, with a capacity of up to 3000 watts, effortlessly drive even power-hungry loudspeakers to their dynamic limits. To maximise the output power, the nuPower A-2 can be operated in mono mode. In this configuration, two nuPower A-2 units are combined to drive a pair of loudspeakers. This provides 1,200 watts (4 ohms) per channel.
Despite this concentrated power, distortion and noise levels remain pleasantly low. With a residual noise of just 80 µV rms and total harmonic distortion as low as 0.002%, the highest standards are met – ideal conditions for building a high-fidelity audio system for the ultimate musical enjoyment.
We particularly recommend the nuPower A-2 in combination with our nuControl X-2 preamplifier and the loudspeakers from our flagship nuVero nova series. However, thanks to its wide range of 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 loudspeaker models. The nuPower A-2 can drive up to two pairs of speakers, either alternately or simultaneously. Its exceptional load stability means it makes no difference whether the speakers are 4-ohm or 8-ohm models – in stereo mode, it can even handle speakers with as low as 2 ohms.
Connections
The nuPower A-2 can be easily integrated into a stereo system via a pair of balanced XLR inputs and a pair of unbalanced RCA inputs. The speaker terminal, featuring four pairs of fine-threaded screw terminals, allows for the operation of either one or two pairs of speakers in stereo mode, or a single speaker in mono mode. A trigger input in mini-XLR format is also available; the appropriate cable is included in the scope of delivery.
Housing and Design
With its clean lines, striking contrasts in form and colour, and the two large VU meters on the front panel, the full-size nuPower A-2 power amplifier clearly evokes the heyday of the hi-fi era. The black glass front is set off by the silver accents of the contoured base, the control knobs and the delicate line frame. The result is a timeless elegance that blends harmoniously into any living space.
Controls
In addition to the standby button, the nuPower A-2 features two further controls on its front panel: a rotary control and an enter button. These allow you to switch between the speaker pairs (operating modes: a, b, a + b) just as easily as between the XLR and RCA inputs. The brightness of the VU meters can also be adjusted within a wide range. As is standard with power amplifiers, volume control is handled via the preamplifier. Switching between mono and stereo operation is done via a toggle switch on the rear panel, as is the selection of the gain factor (stereo operation: 23 / 29 dB). A comprehensive manual explains all the options and provides typical application examples.