What’s our plan?
At QST, we design professional technology solutions that bridge sound, systems, and connectivity. From pro audio to information technology, we make advanced tools simple, scalable, and built for real-world use.
Queens, NY
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QST is my passion project. I’ve always loved sound systems and technologies of every kind, and when an idea comes to mind, I work to bring it to life through QST.
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Every QST product starts with an idea I care about. I research it, build it, prototype it, and test it before putting the QST name on it and sharing it with the world.
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Growing QST takes more than just ideas and products—it takes people. Your support makes it possible to build a company driven by passion, and together we can keep bringing better, cooler products into the future.
Products
Supports up to 3000W on 120–240V for pro audio, home theater, AV, and IT racks. Timed power-on sequencing helps reduce inrush current and stabilize system startup. Front-panel buttons allow each channel to be turned on or off at any time. External switch port lets you mount the main power button remotely on a rack. Built-in surge suppression and a heavy-duty outlet bank for reliable, stable power. Front voltage display and LED indicators show real-time system status.
DUAL CHANNEL SYSTEM: Professional UHF wireless microphone system featuring two handheld dynamic microphones with LCD displays for easy monitoring
FREQUENCY CONTROL: Adjustable frequency settings with auto-sync capability ensures optimal signal transmission and minimal interference
RECEIVER DISPLAY: Clear LCD screen shows real-time frequency and signal status for both channels with easy-to-read parameters
CONTROL INTERFACE: Intuitive front panel with dedicated volume controls and settings for each microphone channel
COMPLETE PACKAGE: Includes rack-mountable receiver unit, two wireless handheld microphones, power adapter, and user manual
The QST QX-1 is a classic Class AB power amplifier designed to perform equally well in home audio, karaoke, studio, and PA systems. Unlike traditional pro amplifiers, the QX-1 features a clean, modern design that looks just as good in a living room as it does in a rack.
Built with an all-aluminum chassis, aluminum volume knobs, and a gloss black front panel, the QX-1 combines premium aesthetics with serious power. Its high-current Class AB output stage delivers smooth, natural sound, clear vocals, and deep, controlled bass.
Designed for 110–120V / 15A North American power, the QX-1 delivers up to 600 W × 2 at 8 Ω, 700 W × 2 at 4 Ω, or up to 1500 W bridged (depending on load and operating conditions).
Balanced XLR inputs ensure clean signal input, while SpeakON outputs and binding posts support both professional PA speakers and high-fidelity home speakers. Built-in protection and limiter circuits help safeguard your system, with Stereo, Parallel, and Bridged modes for flexible system setups.
One amplifier. Any system.
Important:
This unit is a power amplifier only and requires an external preamplifier or audio source with volume control to produce sound.
Use Cases:
External power amplifier for home theater receivers to drive larger or more demanding speakers
Power amplifier for karaoke systems
Bridged mono operation for subwoofers
Stereo power amplifier paired with a preamp for hi-fi audio systems
This product is currently available for preorder only. Estimated delivery time is 30 days.
QST K-1 Professional DSP Karaoke & Microphone Processor
Advanced Digital Signal Processing for Karaoke, Live Events, and Professional Audio Systems
The QST K-1 Digital Karaoke Processor is a powerful all-in-one audio processor designed to deliver clear vocals, precise tuning, and professional sound control. Built with advanced DSP technology, the K-1 allows users to fine-tune microphone and music signals with parametric EQ, vocal effects, feedback suppression, and multi-channel output routing.
Whether you're building a home karaoke setup, live performance system, studio monitoring environment, or commercial installation, the K-1 provides flexible connectivity and powerful processing to ensure your sound is always clean, balanced, and professional.
Precision Audio Control with Parametric EQ
The built-in parametric equalizer allows detailed tuning across multiple frequency bands. Adjust frequency, Q width, and gain to sculpt the perfect vocal or music tone for any environment. The real-time EQ visualization makes it easy to see and adjust your sound with precision.
This level of control allows installers and performers to eliminate harsh frequencies, enhance vocal clarity, and optimize speaker performance.
Advanced DSP Feedback Suppression
The K-1 features automatic feedback suppression designed to eliminate unwanted microphone feedback in real time.
Using intelligent DSP processing, the unit automatically detects feedback frequencies and suppresses them without affecting the overall sound quality. This ensures stable performance in challenging environments such as karaoke rooms, stages, or conference spaces.
Professional Vocal Effects
Enhance vocal performances with built-in echo and vocal effects processing. Multiple adjustable parameters allow you to create the perfect vocal atmosphere for karaoke, stage performances, or public speaking.
Effects can be tuned to suit different environments and vocal styles, delivering smooth and natural vocal enhancement.
Powerful Multi-Channel Audio Routing
The QST K-1 supports 5.1 surround sound output, making it ideal for immersive entertainment systems and advanced installations.
The rear panel includes a variety of input and output connections, allowing flexible integration with mixers, amplifiers, speakers, and recording equipment.
Wireless Music Streaming
With Bluetooth 5.3, the K-1 allows you to stream music wirelessly from smartphones, tablets, and other Bluetooth devices. This makes it easy to play karaoke tracks, background music, or audio for events without additional cables.
Bluetooth connectivity provides a fast and stable wireless audio connection.
Dedicated PC Software for Precise Tuning
The included QST Control Software provides detailed control over every DSP parameter. Through the intuitive interface, users can adjust EQ settings, manage presets, and fine-tune system performance.
The software provides a visual interface that makes advanced audio tuning easy for both beginners and professionals.
Compatible with Windows 10 and Windows 11.
Designed for Professional Installations
Built in a 1U rack-mount chassis, the K-1 integrates easily into professional audio racks and installations. Its durable metal construction ensures reliability for long-term use in commercial environments.
Perfect for:
• Karaoke venues
• Live performance systems
• Churches and conference rooms
• Home karaoke setups
• Professional AV installations
• Studio monitoring systems
Key Features
• Advanced DSP audio processing
• Parametric equalizer for precise tuning
• Built-in vocal effects and echo processing
• Automatic feedback suppression
• 5.1 surround sound output support
• Bluetooth 5.3 wireless music streaming
• Dedicated PC tuning software
• Multiple audio inputs and outputs
• Professional 1U rack-mount design
• Ideal for karaoke, live events, and AV installations
Experience Clear, Powerful Sound with QST
The QST K-1 DSP Karaoke Processor delivers the control, flexibility, and performance needed for professional audio environments. With powerful DSP processing, wireless connectivity, and advanced tuning capabilities, the K-1 ensures your system always sounds its best.
ST1 120W RMS Neodymium Super Bullet Tweeter Power Handling: 120W RMS / 240W Peak for distortion-free high-volume performance Magnet Type: Lightweight neodymium for superior efficiency and sensitivity Impedance: 4 Ohms – compatible with most amps and head units Design: Compact bullet-style with high-compression diaphragm for brilliant, extended highs
PAIR
