The Nero Stream ARC is an integrated amplifier with built-in DAC by OSD that delivers 50 watts x 2 channels into 8 ohms and 100 watts x 2 channels into 4 ohms. It was released in 2024. It is a 2-channel design using a Class D output stage. A minimum impedance of 4 ohms makes it compatible with a wide range of loudspeakers. It has a built-in DAC, so you can play digital sources directly with no separate DAC unit needed. The OSD Nero Stream ARC has an MSRP of $199.
There are 3 OSD amplifiers in our database. Below you can see the main specs of these amps.
OSD Integrated Amplifier Series
Performance Specs
One of the most important factors when deciding on an integrated amplifier is its power ratings and compatibility with your speaker's impedance requirements. The OSD Nero Stream ARC is rated at 50 watts RMS into 8-ohms. OSD provides this wattage at a THD (Total Harmonic Distortion) of 1% which is an important indicator of distortion at the given values (lower THD is better).
Here are the main highlights of its performance specs:
- 50 watts into 8-ohms at 1%
- 100 watts into 4-ohms
- 4-ohms Min Impedance (allows compatibility with a wide range of loudspeakers)
- 95dB Signal to Noise Ratio
How loud will 50 watts actually play in your room? →
Wiring more than one pair of speakers to it? Check the load first →
Which speakers suit the OSD Nero Stream ARC?
50 W into 8 ohms, 100 W into 4, rated down to 4 ohms.
We rank every passive speaker we cover against it on power, impedance safety and current
delivery.
Need more power?
OSD Nero Stream ARC is rated at 50 watts into 8 ohms, which puts it in our Up to 60 watts band. The next band up is 61 to 90 watts, which is worth about 3.9dB more output. That is a real difference in headroom on peaks, and a modest one in how loud the system plays - power and loudness are not the same thing.
Before buying watts, check what your speakers actually need: the amp and speaker matcher works it out from their sensitivity, impedance and your room.
When pairing the OSD Nero Stream ARC with a passive Bookshelf (Stand mount) or Passive Floor Standing (Tower) speaker, you have to check if their Max Power Range is below the max wattage of the amp for the given impedance levels.
Operating your amp outside of this max range may damage the speakers.
Inputs and Outputs
Besides the performance specs of the OSD Nero Stream ARC, the next important feature set that you have to evaluate is the input and output selections that it offers.
Inputs
- 1 Optical Digital Input
- 1 Coaxial Digital Input
- USB Input
Outputs
- Speaker Outputs
- Subwoofer Output (Single)
Bluetooth Connectivity
OSD Nero Stream ARC features built-in Bluetooth 5.0 for wireless music streaming from your Bluetooth-enabled devices such as Apple iPod/iPhone/iPad, Android smartphone/tablet, Windows PC, Mac computers/laptops.
Among the amps in the same price range, these are the 5 amps that have Bluetooth Connectivity:
Phono Input
OSD Nero Stream ARC doesn't have a phono input so in order to play your vinyl albums, OSD Nero Stream ARC has to be paired with a Phono Preamp that is MM (Moving Magnet) or/and MC (Moving COil) depending on your cartridge type.
DAC and Digital Music
The OSD Nero Stream ARC's built-in DAC allows the connection of digital sources directly, eliminating the need for an external DAC.
OSD Nero Stream ARC Pros and Cons
Drawn from the published figures on this page, not from listening.
- ✓Power nearly doubles into a harder load, 50 watts into 8 ohms rising to 100 into 4, which points to a power supply with real current in reserve.
- ✓Class D output stage, so it runs cool and wastes little power as heat - which is how it fits in a small case.
- ✓Built-in DAC handling 24-bit / 192, so a TV, computer or streamer can connect digitally with nothing in between.
- ✓Digital inputs cover 1 optical, 1 coaxial and USB.
- ✓Bluetooth (version 5.0) for playing straight from a phone.
- ✓Dedicated subwoofer output (Single).
- ✓At 191mm wide it fits where a full-size component will not.
- ✓Detachable mains lead (C7).
- Nothing the published specs count against it.
OSD Nero Stream ARC External Dimensions and Weight
OSD Nero Stream ARC has external dimensions of (H x W x D) 2 x 7-1/2 x 7-1/4 inch (50.8 x 190.5 x 184.1 mm ). The unit weighs
1.13 kg (2.5 lbs).
Base Surface Area
Base surface area of an integrated amplifier may become an important decision factor when the space in your room or desk is limited.
The base area of the OSD Nero Stream ARC is approximately 350.7cm2 / 54.4inch2.
- Width: 190.5mm (7-1/2")
- Height: 50.8mm (2")
- Depth: 184.1mm (7-1/4")
- Weight: 1.13 kg (2.5 lbs)
- Base Surface Area: ~350.7cm2 / 54.4inch2
- Volume: ~1.8 liter / 0.5 gallon
Warranty
2 Years of parts warranty and 2 Years of labor warranty is generally provided for the OSD Nero Stream ARC by the manufacturer.
| General |
| Brand |
OSD |
| Full Model Name |
OSD Nero Stream ARC |
| Release Date |
2024 |
| Amplifier Type |
Integrated Amplifier |
| Number of Channels |
2 |
| Amp Class |
Class D |
| Amplifier Technology |
Solid State |
| Performance |
| Watts RMS per Channel into 8-ohms |
50 watts |
| Watts RMS per Channel into 6-ohms |
N/A |
| Watts RMS per Channel into 4-ohms |
100 watts |
| Frequency Bandwidth |
|
| THD |
1% |
| Minimum Impedance |
4 |
| Signal to Noise Ratio |
95 dB |
| Digital Music |
| Built-in DAC |
Yes |
| Bluetooth |
Yes |
| WiFi |
|
| Ecosystem |
| Apple AirPlay |
No |
| Apple AirPlay2 |
No |
| DTS Play-Fi |
No |
| Chromecast built-in |
No |
| Roon |
No |
| HEOS |
No |
| BluOS |
No |
| CONNECTIONS |
| Phono Input |
No |
| Optical Digital Inputs |
1 |
| Coaxial Digital Inputs |
1 |
| USB Input |
Yes |
| Preamp Outputs |
No |
| Pre-out / Main-in Loop |
No |
| Headphone Output |
No |
| Removable Power Cord |
C7 |
| PHYSICAL SPECS |
| Height |
50.8mm (2") |
| Width |
190.5mm (7-1/2") |
| Depth |
184.1mm (7-1/4") |
| Weight |
1.13 kg (2.5 lbs) |
| OTHER |
| Parts Warranty |
2 Years |
| Labor Warranty |
2 Years |