# OSD Audio Nero Stream ARC Amplifier + ACE840 8" Ceiling Speakers

Elevate your home audio setup with the OSD Audio Nero Stream ARC Amplifier and ACE840 8" Ceiling Speakers bundle.

Perfect for living rooms, kitchens, or open-plan areas, this system offers true stereo sound across a wider space with a discreet ceiling-mounted design.

Whether you're streaming music or enhancing your TV audio, this setup delivers detailed and powerful sound with a sleek, low-profile finish.

The Nero Stream ARC amplifier outputs a solid 100W of Class D power and features a versatile range of inputs including Bluetooth, HDMI ARC, optical, and RCA.

Paired with the ACE840 8" ceiling speaker pair, you get left and right channel separation for immersive stereo sound and wider room coverage.

**FEATURES**

-   **Bluetooth Streaming:** Easily stream music from your phone, tablet, or laptop without the need for extra cables.
-   **RCA Audio Input:** Connect external sources such as CD players, turntables (with preamp), or other hi-fi gear with ease.
-   **Optical Audio Input:** Enjoy crystal-clear digital sound from your TV, gaming console, or media player.
-   **HDMI ARC Input For TV:** Connect directly to your television via HDMI ARC for simple control and synchronised audio.
-   **Powerful 100W Amplifier:** Delivers efficient Class D power, providing strong performance in a compact housing.
-   **8" Ceiling Speaker Pair:** Offers full-range left and right channel audio for a wide and balanced stereo image.
-   **Pivoting Tweeters:** Aim the high frequencies toward your listening area for better clarity and room coverage.
-   **Slim Magnetic Grilles:** Frameless, paintable grilles blend into the ceiling for a clean, modern look.
-   **Easy Installation:** Spring-loaded dog-leg clamps make installation quick and secure in most ceiling types.

A stylish and powerful audio solution, this bundle brings rich stereo sound to larger rooms without compromising on design or space.

###### What You Get

**SPEAKERS**

-   2 x Speakers
-   2 x Grilles
-   1 x Cut Out Template
-   1 x User Manual

**AMPLIFIER**

-   1 x Amplifier
-   1 x Power Lead
-   1 x External Antenna
-   1 x Wall Mount Brackets
-   1 x Remote Control

###### Specifications

SPEAKERS

-   **Speaker Type:** 8"High Definition Trimless Ceiling Speakers
-   **Woofer:** 8"Fiber Glass with Rubber Butyl Surround
-   **Tweeter:** 1"Pivoting Titanium Dome
-   **Frequency Response:** 35Hz - 20kHz
-   **Power Handling:** 150W
-   **Sensitivity:** 88 dB
-   **Impedance:** 8 Ohms
-   Spray Paintable Magnetic Grille Included
-   **Inputs:** Gold-plated 5-way Binding Posts
-   Install-friendly Dog Ear Installation Brackets
-   See New Construction Brackets For Compatibility
-   **Diameter&Depth:** 10.79"x 4.41"
-   **Cutout Diameter:** 9.37"
-   **Sold As:** Pair
-   **Warranty:** 10 Years

AMPLIFIER

-   **Amplifier Type:** 2-Channel
-   **Design Type:** Class D
-   **Power Output:** 50W x 2 RMS, 100W x 2 Peak 8ohms / 100W x 2 RMS, 200W x 2 Peak 4ohms
-   **Frequency Response:** 20Hz - 20kHz
-   **Impedance:** 8Ohm to 4Ohm Stable
-   **Signal to Noise Ratio:** >95dB A-Weighted
-   **Sources/Inputs:** ARC, Wireless BT, Optical, USB-C DAC, Line Input, Coax Input
-   **Outputs:** L/R Speaker, Subwoofer Out
-   **Maximum Sample Rate:** 44.1kHz, 48kHz, 96kHz, 192kHz
-   **Bit Resolution:** 16-24 bits; Supports 24Bit/192kHz
-   **Front Panel Controls:** Power Button, Front Volume/Source Select Knob
-   **Remote Control:** Included
-   **Wall Mountable:** Yes
-   **AC Power:** 110/240VAC
-   **Dimensions:** 50mm x 190mm x 140mm
-   **Weight:** 1.1kg
-   **Warranty:** 2 Year

## Details

- **Price:** 429.0 GBP - 599.0 GBP
- **Vendor:** OSD Audio
- **Type:** In Ceiling Speaker Systems
- **Tags:** BLACK5, Medium Rooms, Prime, SALE10

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| One Pair | 429.00 GBP | In stock |
| Two Pairs | 599.00 GBP | In stock |

## Images

- OSD Audio Nero Stream ARC Amplifier + ACE840 8" Ceiling Speakers - K&B Audio
- OSD Audio Nero Stream ARC Amplifier + ACE640 6.5" Ceiling Speakers - K&B Audio
- OSD Audio Nero Stream ARC Amplifier + ACE640 6.5" Ceiling Speakers - K&B Audio
- OSD Audio Nero Stream ARC + QI80CE 8" Ceiling Speaker System with Bluetooth & HDMI - K&B Audio
- OSD Audio Nero Stream ARC + QI80CE 8" Ceiling Speaker System with Bluetooth & HDMI - K&B Audio
- OSD Audio Nero Stream ARC + QI80CE 8" Ceiling Speaker System with Bluetooth & HDMI - K&B Audio
- OSD Audio Nero Stream ARC + QI80CE 8" Ceiling Speaker System with Bluetooth & HDMI - K&B Audio
- OSD Audio Nero Stream ARC + QI80CE 8" Ceiling Speaker System with Bluetooth & HDMI - K&B Audio
- OSD Audio Nero Stream ARC Amplifier + ACE840 8" Ceiling Speakers - K&B Audio
- OSD Audio Nero Stream ARC Amplifier + ACE840 8" Ceiling Speakers - K&B Audio

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> Source: [K&B Audio](https://www.kbaudio.co.uk/products/osd-audio-nero-stream-arc-amplifier-ace840-8-ceiling-speakers)
> Updated: 2026-07-09