# OSD Audio Nero Stream ARC Amplifier + ACE640 6.5" Ceiling Speakers

Create a clean and immersive audio setup with the OSD Audio Nero Stream ARC Amplifier and ACE640 6.5" Ceiling Speakers bundle.

Ideal for kitchens, dining areas, or compact living spaces, this system offers left and right channel separation for true stereo sound while maintaining a low-profile, minimalist ceiling finish.

The Nero Stream ARC amplifier delivers 100W of efficient Class D power and includes a range of modern input options such as Bluetooth, HDMI ARC, optical, and RCA.

When paired with the ACE640 6.5" ceiling speaker pair, you get room-filling stereo audio that's clear, balanced, and ideal for both music and TV.

**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.
-   **6.5" Ceiling Speaker Pair:** Provides dedicated left and right audio channels for full stereo sound across the room.
-   **Directional Tweeters:** Angle the high frequencies for enhanced sound dispersion and clarity.
-   **Paintable Magnetic Grilles:** Frameless grilles ensure a discreet ceiling finish that blends into any décor.
-   **Quick-Mount Installation:** Dog-leg mounting system makes for fast, secure fitting into plasterboard ceilings.

This versatile bundle delivers quality sound and simple integration, making it a perfect solution for stylish and functional home audio.

###### 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:** 6.5"High Definition Trimless Ceiling Speakers
-   **Woofer:** 6.5"Fiber Glass Cone
-   **Tweeter:** 1"Pivoting Titanium Dome
-   **Frequency Response:** 40Hz - 20kHz
-   **Power Handling:** 150W
-   **Sensitivity:** 89 dB
-   **Impedance:** 8 Ohms
-   Spray Paintable Grille Included
-   **Inputs:** Gold-plated 5-way Binding Posts
-   Install-friendly Dog Ear Installation Brackets
-   **Diameter&Depth:** 8.86"x 3.54"
-   **Cutout Diameter:** 7.80"
-   **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:** 399.0 GBP - 549.0 GBP
- **Vendor:** OSD Audio
- **Type:** In Ceiling Speaker Systems
- **Tags:** BLACK5, Medium Rooms, Prime, SALE10

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| One Pair | 399.00 GBP | In stock |
| Two Pairs | 549.00 GBP | In stock |

## Images

- 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 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 + ACE640 6.5" Ceiling Speakers - K&B Audio
- OSD Audio Nero Stream ARC Amplifier + ACE640 6.5" 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-ace640-6-5-ceiling-speakers)
> Updated: 2026-07-09