WiiM Amp Ultra

Dimensions and Weight

Dimensions: 7.87 x 8.3 x 3 inches (200 x 211 x 76.2 mm)

Weight: 5.4 lbs (2.45 kg)

Audio Performance
• Power Output (THD = 0.08%, two channels driven):  100 W per channel @ 8Ω, 200 W per channel @ 4Ω
• Amplifier Technology :  Class-D with PFFB (Post-Filter Feedback) technology
•Total Harmonic Distortion (THD+N):  ≤0.005%, -106 dB (A-weighted)
• Signal-to-Noise Ratio (SNR) :  ≥120dB
• Damping Factor:  94
• Frequency Response:  20Hz – 20kHz ± 0.5dB
• Impedence Range:  2 – 8Ω

Audio Processing
Premium Audio Components:  ESS 9039Q2M high-performance DAC, Dual TI TPA3255 Amps, TI OPA1612 op-amps for ultra-low distortion and rich, detailed sound.
Bit-Perfect Playback:  Supports up to 192kHz/24-bit audio
Dynamic Range:  ≥120dB for high-resolution sound

Input & Output Options
✅ Analog Inputs:
• 1x RCA Stereo: Connects to external audio sources like CD players or PCs
✅ Digital Inputs:
• 1x Optical (TOSLINK) – Up to 192kHz/24-bit
• HDMI ARC: Receives audio from TVs, PCM up to 192kHz/24-bit, and Dolby Digital 5.1 formats
✅ Speaker Outputs:
• Gold-plated binding posts (supports banana plugs or bare wire connections)
✅ USB Audio Output:
• Supports up to 8-channel 24-bit/192kHz; UAC 2.0 compliant
✅ Sub Output:
• Dedicated output for powered subwoofers (RCA Mono)

Wireless & Network Connectivity
Wireless Connectivity:
Bluetooth 5.3: Supports A2DP receiver and transmitter, AVRCP, HID, and works with the WiiM voice remote Wi-Fi 6 (Upgradeable to Wi-Fi 6E): Ensures stable and high-speed wireless streaming
Wired Network:
Ethernet (100Mbps): Standard RJ45 port

EQ & Sound Customization
Input-Specific EQ:
Independent settings for Wi-Fi, HDMI ARC, Optical, Bluetooth, Line-In
EQ Tools:
▪ 24 Preset EQ Profiles
▪ 10-Band Graphic & Parametric EQ
▪ Built-in Room Correction with mic-guided acoustic tuning

Streaming & Smart Features
Streaming Protocols:
▪ WiiM Home App
▪ Google Cast
▪ Spotify Connect
▪ TIDAL Connect
▪ DLNA, LMS
▪ Roon Ready (Certification Pending)
• Multi-Room Audio:
Compatible with WiiM, Google Home, and Alexa multi-room systems
• Stereo Pairing:
Supports L/R speaker setup for enhanced stereo imaging
• Home Theater Mode:
Functions as front, center, or surround channel in a Dolby 5.1 setup via HDMI ARC
• Smart Presets:
Quick access to favorite playlists, sources, or routines
• Alarm Clock:
Configurable time, repeat schedule, and music source

Touch Display
Screen:
3.5” glass-covered capacitive touchscreen
Functions:
▪ Playback controls, album art, EQ adjustment, input switching
▪ Queue view, preset access, VU meters, time/date in standby
▪ Custom wallpapers and onboarding setup (OOBE)
▪ Supports firmware updates directly via screen

Design & Controls
Chassis: Precision-machined unibody aluminum for durability & heat dissipation
Dimensions: 7.9” x 2.9” x 7.9” (200 x 75 x 200 mm)
Weight: 5.4 lbs (2.45 kg)
Physical Controls: Multifunctional rotary knob (Volume, Play/Pause)
Thermal Management: Copper heat pipe, large aluminum heatsink, unibody aluminum case, and precision PID thermal control
Cooling System: Passive, silent operation

Package ContentsUser Guide *1
Power Cable *1
RCA Cable *1
Optical Cable *1
HDMI Cable *1
Remote 2 *1
Banana Plugs *4

What speakers can I use with WiiM Amp Ultra?
WiiM Amp Ultra supports most passive speakers with an impedance between 2–8 ohms. It can power bookshelf, tower, in-wall, or outdoor speakers—up to four in total (two pairs in parallel at 4Ω).

Can I connect my turntable or CD player?
Yes! Use the Line-In input to connect your analog sources such as turntables (with built-in or external preamp), CD players, or tape decks.

Does it support HDMI ARC?
Absolutely. HDMI ARC lets you connect your TV and control volume directly from the TV remote. It also supports Dolby Digital for immersive home theater audio.

Can I use it with my subwoofer?
Yes, there’s a dedicated Subwoofer Out (RCA) for connecting active subwoofers. You can adjust crossover and gain in the app for a seamless blend.

Does WiiM Amp Ultra work with smart home systems?
Yes, it works with Alexa, Google Assistant, and is compatible with multi-room setups using WiiM, Alexa Cast, or Google Cast. It also works with Control4, RTI, URC, NICE etc. custom installation platform.

What music services are supported?
You can stream from Spotify, TIDAL, Qobuz, Amazon Music, Deezer, Pandora, TuneIn, SoundCloud, iHeartRadio, and more via the WiiM Home App or your favorite casting protocol.

Can I stream music directly from my phone?
Yes! Use Chromecast, Alexa Cast, Bluetooth, Spotify Connect, TIDAL Connect, Qobuz Connect, and DLNA to cast music directly from your preferred music app.

Does it support Roon?
Roon Ready certification is pending. Once certified, WiiM Amp Ultra will offer seamless integration with Roon's advanced streaming and library features.

Can I control multiple rooms?
Yes, you can group multiple WiiM devices using the WiiM Home App, Alexa, or Google Home for synchronized multi-room playback.

What’s special about the DAC and amplifier design?
It features a high-end ESS ES9039Q2M DAC, dual TI TPA3255 Class-D amplifier chips, and six TI OPA1612 op-amps—delivering clean, detailed, high-power audio with ultra-low distortion.

What is PFFB technology?
Post Filter Feedback (PFFB) improves amplifier stability and performance by compensating for speaker load variations—resulting in more accurate, consistent sound.

Does it have room correction?
Yes! Built-in room correction automatically adjusts EQ to match your room’s acoustics and speaker characteristics for optimal sound.

Can I adjust the EQ?
Absolutely. Choose from 24 preset profiles or fine-tune your sound with a 10-band graphic and parametric EQ per input source.

What is the warranty period?
The WiiM Amp Ultra comes with a 1-year limited warranty. Extended coverage may be available depending on your region or retailer.