WiiM Amp Ultra & 2 x Definitive Technology DI 5.5R Ceiling Speakers

This package consists of a WiiM Amp Ultra (Space Grey) and 2 x Definitive Technology DI 5.5R Ceiling Speakers.

In our opinion, this package is ideal for a small-sized room and will provide good-quality audio.

WiiM Amp Ultra (Space Grey)

The WiiM Amp Ultra Wireless Streaming Amplifier is a high-performance all-in-one streaming amplifier that combines powerful audio amplification and modern smart features in a sleek unibody aluminium design. It delivers up to 100 W per channel into 8 Ω (200 W into 4 Ω) to drive passive speakers with detailed, low-distortion sound using a premium ESS ES9039Q2M SABRE DAC and advanced Class-D amplification. The unit includes a vibrant 3.5″ touchscreen for direct control, supports a wide range of streaming services and wireless connectivity (Wi-Fi 6, Bluetooth 5.3), and integrates with smart home systems like Alexa and Google Assistant. Additional features like HDMI ARC for TV audio, room calibration, and flexible EQ options make it a versatile centrepiece for modern home audio systems.

Key Features

• Powerful output: Up to 100 W per channel (8 Ω) / 200 W (4 Ω)
• High-end DAC & components: ESS SABRE DAC with low-distortion Class-D amplification
• Built-in touchscreen: 3.5″ colour display for easy control
• Wide streaming support: Wi-Fi, Bluetooth, Chromecast, Spotify Connect, TIDAL Connect, Roon Ready
• Room calibration: Automatic room tuning for optimal sound
• TV-friendly: HDMI ARC input with Dolby Digital support
• Multi-room & smart control: Works with Alexa, Google Assistant, and WiiM Home app
• Advanced EQ options: Presets, graphic EQ, and parametric EQ

Definitive Technology DI 5.5R Ceiling Speakers

With its small diameter, hidden flange design, and low-profile grille, the DI 5.5R is nearly invisible in your ceilings or walls. This pint-size dynamo goes boldly where other speakers can’t, while producing a full, accurate audio experience belying its size.

The culmination of decades of engineering, DI Series Loudspeakers deliver sensational sound quality while virtually disappearing into walls and ceilings with our hidden flange design. Treat yourself to dynamic bass, smooth midrange, and sparkling treble with little impact on your décor.

Environmental EQ fine-tunes the highs for any space

Adjust the Environmental EQ switch to customize tweeter output for your listening environment. Engage the [+] setting to boost treble in sound-absorbing rooms, or the [–] setting to reduce treble in lively rooms. Leave in the Centre position for rooms with average reflectivity.

Pivoting Tweeter for controlled directivity

The ultralight, rigid construction of DI Series aluminium dome tweeters enables them to play significantly higher frequencies than we can hear, enabling optimum linearity within the range of human hearing. The DI 5.5R features a pivotable tweeter for clean, sparkling, distortion-free highs, with dispersion customizable to your space.

Exclusive BDSS™ Technology midrange/bass woofer

For more bass in less space while keeping midrange detailed and responsive, the DI 5.5R’s 5.25” mid/bass woofer leverages our exclusive Balanced Double Surround System (BDSS™) driver technology. The double butyl rubber surrounds produce a much greater cone excursion than other comparably sized drivers. And the DI 5.5R’s rigid PolyStone™ basket provides a sturdy launching pad for the powerful excursion.

With BDSS drivers, you’ll enjoy superior midrange/bass dynamics and detail in packages sized for stealth.

Acoustic Wizardry for the details that make the difference

The DI 5.5R features a sophisticated adjustable crossover network with custom, high-precision components for superior sonic purity.

Surrounding the BDSS driver is a specially-contoured AeroRing™ that precisely distributes natural, well-balanced sound by minimizing diffraction.

The Axially-Aligned configuration of the tweeter with the woofer provides broader sound dispersion and more natural balance.

Paintable Magnetic Grille for the final custom touch

All DI Series speaker grilles and grille frames are paintable, with easy step-by-step instructions. Once you have your perfect look, powerful neodymium magnets attach the grilles to the speakers for a secure, tool-free finish.