Reference Key-Changer Harmony+ STAGE IV System -4000W

🎤 PEAK Reference Series Harmony+ Stage IV Karaoke System – Key-Changer Edition

Perfect Harmony of Control, Clarity, and Performance

Discover the next level of refined home karaoke with the Peak Reference Series Harmony+ Stage IV — a beautifully engineered system designed to deliver professional vocal control, rich sound, and effortless fun. Built for families, passionate singers, and home entertainers who want premium performance without overwhelming complexity, the Harmony+ transforms any room into a confident, polished stage.

🔊 Balanced, High-Fidelity Sound with Musical Precision

At the heart of the Harmony+ Stage IV NAUTALION system is a carefully tuned speaker and amplification design that prioritizes clarity, warmth, and balance. The speakers deliver tight, controlled bass with smooth mids and crisp highs, ensuring vocals always sit perfectly in the mix — never harsh, never buried.

Optimized cabinet tuning and high-quality internal components allow the system to fill medium to large rooms with ease, making it ideal for family spaces, basements, condos, and dedicated karaoke rooms. Professional-grade connectors ensure stable signal transfer and long-term reliability you can trust.

🎤 PartyHub Wireless Microphones – Clear Vocals, Stress-Free Singing

Harmony+ Wireless Microphones, designed for clarity, comfort, and everyday reliability. Lightweight yet solid in hand, they deliver natural vocal tone that flatters all voice types — from kids to seasoned singers.

Built-in Volume, Treble, Bass and Echo control helps each individual singer maintain their level of performance, creating a smoother, more enjoyable experience for everyone in the room. Simple controls and dependable wireless performance make them easy for the whole family to use.

🎚️ Key Changer & DSP – Sing Every Song in Your Perfect Range

What truly sets the Harmony+ Reference Stage IV apart is its integrated Key Changer and digital signal processing (DSP). With the touch of a button, you can shift a song’s key up or down to match your vocal range — no strain, no compromise.

The onboard DSP enhances vocals in real time, smoothing harsh frequencies and adding warmth and presence. Separate controls for microphone volume, music volume, echo, bass, treble, and delay give you the flexibility to dial in your sound exactly the way you like it.

Whether it’s a quiet duet or a lively group performance, your voice always sounds confident and in control.

🔌 Flexible Connectivity for Modern Homes

The Harmony+ Stage IV integrates effortlessly with today’s entertainment setups:

• Bluetooth streaming from phones, tablets, and smart TVs

• Optical / Digital input for clean, high-quality TV audio

• Line-in options for external devices or mixers

Switch between karaoke, music, and TV audio seamlessly — one system, multiple uses.

🖤 Refined Design & Thoughtful Build

Sleek, modern, and purpose-built, the Harmony+ Stage IV features a clean, understated aesthetic that fits beautifully into any home environment. From the precision-finished components to the protective speaker grilles and sturdy construction, every detail reflects Peak’s commitment to quality and durability.

Each system is securely packaged for safe transport, and setup is straightforward — so you can spend less time wiring and more time singing.

✨ Designed for Real Life, Built to Perform

From relaxed family karaoke nights to weekend get-togethers with friends, the Reference Harmony+ Stage IV adapts effortlessly. It’s powerful enough to energize a room, yet controlled and intuitive enough for everyday enjoyment.

This is the system for those who value musicality, ease of use, and vocal confidence — without stepping into oversized, overbuilt territory.

📦 Included in the System

• Peak Reference Series Amplifier/Mixer with Key Changer & DSP

• 2× NAUTALION Series Stage IV Speakers

• 4× Harmony+ Wireless Microphones with Receiver (Plug in)

• Speaker cables and required accessories

🌟 Where Control Meets Confidence

The Peak Reference Series Harmony+ Stage IV is more than a karaoke system — it’s a carefully balanced performance solution that helps every singer sound their best. Elegant, capable, and thoughtfully engineered, it represents Peak’s dedication to bringing professional features into real homes.

🎶 Find your key. Find your harmony.

Peak Reference Series Harmony+ Stage IV – Sing Every Song Your Way.