WiiM Amp Ultra
Nicely Roasted
Sound Quality
85/100
Build Quality
88/100
Features Connectivity
95/100
Value for Money
95/100
Clean, controlled and remarkably flexible, the WiiM Amp Ultra combines verified 100W/200W output with a low-noise ESS-based signal path that stays tonally steady across speaker loads. Erin's Audio Corner found its rated power credible and room EQ highly capable, while ecoustics spotlights the HDMI ARC, parametric EQ and touchscreen-led streaming experience. It is a polished all-in-one hub for ambitious compact systems.
Pros
Delivers its rated 100W per channel into 8 ohms and 200W per channel into 4 ohms, with stable response across reactive speaker loads.
Extensive app-based tuning includes independent left/right parametric EQ, effective room correction and adjustable subwoofer timing.
Strong system integration through HDMI ARC, Dolby Digital decoding, subwoofer output, streaming support and a practical touchscreen interface.
Well-built, compact all-in-one design with a low noise floor and an appealing finish.
Cons
Does not support AirPlay or operate as an AirPlay receiver.
Ultimate output headroom is limited for very large rooms or demanding playback levels; testing noted a desire for more level beyond roughly 88dB in a large open room.
At 2 ohms, the amplifier can reach protection and mute its outputs, so it is not ideal for especially difficult low-impedance loads.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 85/100
The Amp Ultra measures as a clean, low-noise amplifier with stable frequency response across demanding loads and verified rated output. Its strengths are control, clarity and consistency, while available listening evidence is thinner on spaciousness and ultimate high-level headroom.
Transparency Resolution
90/100
Erin’s measurements found a low noise floor and virtually unchanged frequency response into static and reactive loads; even the reported load-related deviation was considered inaudible. Ecoustics likewise highlights low noise, low distortion and preservation of fine detail without artificial coloration.
Tonal Balance Musicality
88/100
The available commentary points to an even, clean presentation rather than a strongly voiced or colored one. Ecoustics describes detail being retained without artificial coloration, while Erin’s load tests indicate that the amplifier should remain tonally consistent with a broad range of speakers.
Dynamics
86/100
Independent testing verified the claimed 100W into 8 ohms and 200W into 4 ohms, giving the compact Class-D design meaningful control with typical loudspeakers. There are limits at the extremes: Erin noted apparent burst limitations, protection shutdown at 2 ohms, and a desire for somewhat more output beyond roughly 88dB in his test.
Soundstage Imaging
76/100
The supplied Amp Ultra reviews offer little direct assessment of stereo width, depth, image focus or layering. Ecoustics says a broader WiiM system can sound large, but this is not enough to establish a detailed imaging verdict for the amplifier itself.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
88/100
Reviewers describe the build as very good, with Erin calling out its pleasing heft and great overall construction. The aluminum chassis, passive cooling arrangement and measured power delivery support the impression of a thoughtfully engineered compact unit, though long-term durability is not discussed in depth.
Features Connectivity
95/100
This is unusually comprehensively equipped for a compact streaming amplifier: HDMI ARC and Dolby decoding, optical and RCA inputs, a subwoofer output, Wi-Fi/Ethernet streaming, Bluetooth, touchscreen control and extensive app control are all included. Its input-specific EQ, separate left/right parametric EQ, adjustable sub timing and microphone-guided room correction are especially useful; the notable omission is AirPlay receiving support.
Value for Money
95/100
At roughly $529-$549, reviewers see the Amp Ultra as unusually well equipped for the money. Erin calls it well worth the money and a “no-brainer,” while Ecoustics frames its combination of power, HDMI ARC, room correction and touchscreen as highly competitive against Sonos-oriented alternatives.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
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Specifications
- 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 ▪ Chromecast Audio ▪ 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 Contents
- User Guide *1 Power Cable *1 RCA Cable *1 Optical Cable *1 HDMI Cable *1 Remote 2 *1 Banana Plugs *4
Manufacturer's Description — WiiM
WiiM Amp Ultra Highlights
100W of pure hi-fi power with a vibrant 3.5″ touchscreen for smart, seamless control
Unleash Studio-Quality Sound
Meet the WiiM Amp Ultra – our most advanced streaming amplifier yet. Built for music lovers, home theater buffs, and smart home fans, it delivers stunning 100W per channel (8Ω) with ultra-low distortion, pushing high-fidelity audio to every corner of your space. Whether it’s vinyl, Spotify, or cinematic surround sound—you’ll hear it like never before.
Beautiful Inside and Out
Designed to stand out and fit in, the Amp Ultra features a sleek unibody aluminum chassis and a vibrant 3.5″ glass-covered touchscreen. Easily control playback, switch sources, view album art, and more—all at your fingertips.
Post Filter Feedback Technology
At the core of the WiiM Amp Ultra’s superior sound is its advanced Post-Filter Feedback (PFFB) technology, a cutting-edge refinement system that minimizes distortion, enhances clarity, and ensures consistent sound quality across different speaker loads. Unlike traditional amplifiers that suffer from load-dependent performance variations, PFFB dynamically compensates for these inconsistencies, delivering a more accurate, balanced, and natural sound signature. The result? A wider soundstage, richer details, and an immersive listening experience that faithfully reproduces every note with precision and depth.
Advanced Thermal Management
High-power amplification generates heat, but the WiiM Amp Ultra stays cool under pressure with advanced thermal management:
Next-Gen Wireless Streaming
Stay connected with the latest in wireless tech:
Wi-Fi 6 (Tri-Band)
Bluetooth 5.3 with SBC and AAC support
Stream ultra-high-resolution audio with near-zero latency—no dropouts, no lag, just music.
See Your Sound
A vivid 3.5″ glass touchscreen puts album art, VU meters, and one-tap controls front and center—making input switching, setting tweaks, and playback navigation effortless, with instant visual feedback.
Built-In RoomFit™ Room Correction
Every room is different—WiiM Amp Ultra adapts. Using built-in acoustic measurement and correction, it tunes your setup to match your environment, optimizing for speaker type, distance, and room acoustics.
Tailor Your Sound
Dial in the perfect tone with:
24 Preset EQ Profiles
10-Band Graphic and Parametric EQ
Per-input EQ settings
Subwoofer crossover control
Versatile Connectivity
Easily integrate turntables, TVs, CD players, or stream to any WiiM or Bluetooth-enabled device.
Control Everything with the WiiM Home App
One app. Total control.
Stream music, adjust EQ, group rooms, set alarms, or update firmware with ease—right from your phone or tablet.
Take full control with the WiiM Voice Remote 2
WiiM Voice Remote 2 crafted with a sleek aluminum body, rechargeable battery, and intuitive Push-to-Talk voice commands—plus smart presets and dedicated playback buttons for a seamless, intuitive experience.
Future-Proof by Design
We’re constantly improving. With regular OTA firmware updates, your Amp Ultra only gets better over time—with new features, streaming services, and optimizations.
Verified Dealers
Online Dealers
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Authorized dealers for WiiM Amp Ultra
- A1 Futureshop — online and in-store — North Rocks, New South Wales, Australia (website)
- Aalen Hifi — in-store — Schwäbisch Gmünd, Baden-Wurtemberg, Germany (website)
- Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
- Acoustic Streams — in-store — Lower Drift, England, United Kingdom (website)
- Acoustipower — online and in-store — Markham, Ontario, Canada (website)
- Acton Gate Audio — online and in-store — Cymru, United Kingdom (website)
- Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
- Apollo HiFi — online and in-store — Marrickville, New South Wales, Australia (website)
- Archer High Fidelity — in-store — Washington, Virginia, United States (website)
- Area Hifi — online and in-store — L'Eixample, Comunidad Valenciana, Spain (website)
and 173 more verified dealers