The WiiM Amp Ultra is an integrated streaming amplifier with a unibody aluminum chassis and a 3.5-inch glass-covered touchscreen. The screen shows playback controls, source selection, album art and VU meters, and it switches inputs directly.
Audio comes from an ESS ES9039Q2M SABRE DAC, dual TI TPA3255 Class-D amplifiers and six TI OPA1612 op-amps. Post Filter Feedback (PFFB) technology is built in. A copper heat pipe, a large aluminum heatsink and PID control regulate temperature during long, loud listening. RoomFit technology tunes the sound to the room's acoustics.
It streams over Wi-Fi 6 tri-band, Ethernet and Bluetooth 5.3. Supported services and protocols include Spotify, TIDAL, Qobuz, Amazon Music, Chromecast, Alexa Cast, Spotify Connect, Roon Ready and DLNA. It supports multi-room audio, stereo pairing, and a home theater mode with HDMI ARC and Dolby Digital. Control is through the WiiM Home App or the WiiM Voice Remote 2, which has push-to-talk commands. Over-the-air firmware updates add features and services over time.
- Amplifier class
- Class D
- Power output
- 200 W at 4Ω, 100 W at 8Ω
- Frequency response
- 20Hz – 20kHz ± 0.5dB
- Signal-to-noise
- 120 dB
- THD
- 0.08%
- THD+N
- 0.005%
- Damping factor
- 94
- Output impedance
- 28 Ω
- Channels
- 2
- DAC chip
- ES9039Q2M
- Network
- Wi-Fi 6 tri-band and Ethernet
- Bluetooth
- Version 5.3
- Inputs
- 1 x RCA, HDMI ARC, 1 x optical (24-bit, 192kHz), Bluetooth
- Outputs
- Digital USB, mono RCA subwoofer
- EQ
- 24 presets, 10-band graphic and parametric EQ, per-input settings, subwoofer crossover control
- Display
- 3.5-inch glass-covered touchscreen
- Enclosure
- Aluminum
- Dimensions
- 200 x 211 x 76.2 mm (W x H x D)
- Weight
- 2.45 kg
- Control
- WiiM Home App, WiiM Voice Remote 2