A pair of passive speakers and this single compact box make a complete hi-fi. The WiiM Amp handles streaming, conversion and amplification in one aluminium chassis, with the WiiM Home app tying services, sources and settings together.
In an Apple household it is the natural pick of the range. AirPlay 2 and Siri are on board and it groups with HomePod speakers, while Alexa and Google Assistant cover everyone else in the house.
It also does television duty. HDMI ARC brings the TV's sound through the stereo pair, so films and series get the same treatment as music, and the bedroom or study system this replaces never has to come back.
For official product information and current support resources, visit the WiiM Amp product page.
| ITEM | DESCRIPTION |
| Main Features | |
| Multiroom by design | Groups with other WiiM devices so the same music follows you from room to room. |
| Two-way Bluetooth | Streams in from a phone or out to Bluetooth headphones for late-night listening. |
| USB library playback | Music on an attached USB drive plays directly, no computer or network share required. |
| Subwoofer ready | A dedicated output adds a sub when the room calls for more low end. |
| Voice remote included | Volume, tracks and presets from the couch without opening the app. |
| DETAIL | VALUE |
| Product Specifications | |
| Output power | 60 Watts/channel at 8 ohms; 120 Watts/channel at 4 ohms |
| Audio amplification | TI TPA3255 |
| DAC | ESS 9018 K2M |
| Total harmonic distortion (THD+N) | -92dB (0.0025%) at 5W |
| Signal-to-noise ratio (SNR) | 98 dB |
| Inputs | 1 × HDMI ARC (stereo PCM); 1 × optical, up to 192kHz/24-bit; 1 × RCA line-in (2 Vrms, digitised up to 192kHz/24-bit); USB storage (FAT32, NTFS, EXT4) |
| Outputs | Passive speaker terminals (banana plugs, L and R); subwoofer out (2.0 Vrms); USB out (UAC 2.0, up to 192kHz/24-bit) |
| Network and wireless | Wi-Fi 5 (802.11 b/g/n/ac, dual band); 10/100Mbps Ethernet; Bluetooth 5.0, two-way (A2DP sink and source) |
| Streaming protocols | AirPlay 2, Chromecast, Spotify Connect, TIDAL Connect, Alexa Cast, DLNA, Roon Ready |
| Voice control | Alexa, Google Assistant, Siri |
| Power input | 100-240V AC, 50/60Hz, 4A max |
| Dimensions | 190 × 190 × 63 mm (7.48 × 7.48 × 2.48 in) |
| Weight | 1.84 kg (4.1 lbs) |
| Package Contents | |
| In the box | 1 × WiiM Amp; 1 × WiiM Voice Remote; power, HDMI, RCA and optical cables (1.5m each); quick start guide |
The Motion Foundation B1 is the standmount that brings MartinLogan's folded tweeter into a price most systems can reach. That transducer is the reason to look at this speaker rather than a conventional dome design.
Folded Motion works by pleating a thin diaphragm and squeezing air out from between the folds instead of pushing it forward. Moving mass drops sharply, and treble arrives with a speed that domes struggle to match at any price.
An aluminium mid-bass cone carries everything below the crossover, and the handover sits high, which keeps voices on a single driver through most of their range instead of splitting them.
Sensitivity is generous and the load is mild, so a modest integrated amplifier drives it properly. It suits a smaller room, or the rear channels of a system whose front speakers already share this tweeter.
MartinLogan Motion Foundation B1 official product page
| ITEM | DESCRIPTION |
|---|---|
| Folded Motion tweeter | A pleated diaphragm with far less moving mass than a dome. |
| Aluminium mid-bass cone | A stiff cone carrying the whole vocal band below the crossover. |
| High crossover point | Voices stay on one driver instead of being split across two. |
| Generous sensitivity | Drives properly from a modest integrated amplifier. |
| Range tweeter match | Shares its treble character with the floorstanders above it. |
| DETAIL | VALUE |
|---|---|
| Driver complement | 1 x 0.94" x 1" (2.4 x 2.5cm) Gen2 Folded Motion Tweeter S, 1 x 5.5" (14cm) aluminium cone mid-bass driver |
| Frequency response | 48 Hz - 23 kHz ± 3 dB |
| Sensitivity | 89 dB |
| Nominal impedance | 5 ohms |
| Recommended amplifier power | 15 - 100 watts |
| Crossover frequency | 3,400 Hz (2-way) |
| Dimensions | 34.6cm x 18.4cm x 24.05cm (13-11/16" x 7-1/4" x 9-1/2") |
| Weight | 5.2 kg each |
| ITEM | QUANTITY |
|---|---|
| Motion Foundation B1 loudspeaker | Pair |
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