About: WiiM Amp Ultra Wireless Streaming Amplifier with Bluetooth and Google Cast (Space Gray)

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:

• Copper Heat Pipe – Rapidly transfers heat from key components for stable performance at any volume.
• Large Aluminum Heatsink – Exceptional conductivity ensures fast, efficient cooling, preventing thermal throttling.
• Precision PID Control – Real-time temperature regulation for optimal cooling and long-term reliability.

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. 

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
• Impedance 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
• 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
• Dimensions: 7.9” x 2.9” x 7.9” (200 x 75 x 200 mm)
• Weight: 5.4 lbs (2.45 kg)

What's in the Box:

• 1 x User Guide 
• 1 x Power Cable 
• 1 x RCA Cable 
• 1 x Optical Cable 
• 1 x HDMI Cable 
• 1 x Remote 2 
• 4 x Banana Plugs