Steg QM500.1 500 watt Mono Block Amplifier

Professionally Maintained Demo Units
Every demo unit has been carefully maintained by our certified technicians. These aren't customer returns or damaged goods - they're the same high-quality equipment we've used to demonstrate premium sound to our customers for years.

Pre-Tested & Verified
Unlike typical clearance sales, every item has been tested and verified by our technical team. We stand behind the quality of our relocation inventory.

Everything Must Go Pricing
These aren't regular sale prices - this is genuine "moving warehouse" pricing. Discounts you simply won't find under normal retail circumstances.

Trade Show Display Models
Many items are pristine display models from major audio trade shows - equipment that's been seen but never installed. These pieces often include special editions or limited releases not available through regular retail channels.
The Steg QM 500.1 monoblock amplifier represents Italian engineering excellence in compact car audio amplification. This single-channel powerhouse delivers exceptional performance for subwoofer applications, combining decades of STEG's manufacturing expertise with modern efficiency. Designed for installation flexibility and superior sound quality, the QM 500.1 addresses the growing demand for powerful yet space-conscious amplification solutions in today's vehicle audio systems.
Powerful Performance in Compact Design
The Steg QM 500.1 utilizes advanced Class-D topology to deliver 500 watts RMS at 1-ohm impedance while maintaining remarkable efficiency levels exceeding 80%. This engineering approach ensures minimal heat generation and reduced power consumption compared to traditional Class A/B designs. The amplifier's compact 264 x 56 x 184mm footprint makes it ideal for installations where space is premium, fitting easily under seats or in tight trunk compartments without sacrificing performance.
Professional Installation Features
Built for professional installers and enthusiasts alike, the QM 500.1 incorporates high-level inputs with automatic turn-on functionality, eliminating the need for dedicated remote wire connections in many applications. The amplifier automatically detects incoming audio signals and powers up accordingly, making it compatible with factory head units and aftermarket systems. Variable crossover controls, subsonic filtering, and bass boost capabilities provide precise tuning options for optimal subwoofer integration.
Italian Craftsmanship and Reliability
STEG's 30-year heritage in car audio manufacturing shines through in the QM 500.1's construction quality. Selected MOSFETs, precision components, and robust terminal blocks ensure long-term reliability and consistent performance. The amplifier features comprehensive protection circuits against overheating, short circuits, and over-voltage conditions, safeguarding both the amplifier and connected speakers during demanding operating conditions.
Steg QM500.1 500 watt Mono Block Amplifier
Frequently Asked Questions
Are these items authentic, and why are the prices so low?
This sale includes demo units we've used for customer demonstrations since 2016, new-old-stock from discontinued product lines, display models from trade shows, and carefully curated inventory we've collected over nearly a decade. Most items include original packaging where available.
What types of items are included in the relocation sale?
Our relocation sale includes demo units we've used for customer demonstrations, new old stock from discontinued product lines, and display models from trade shows. All items are genuine products from top car audio brands - we're simply clearing inventory we can't take to our new location. Items range from amplifiers and speakers to processors and accessories accumulated over nearly 10 years at this location.
Do sale items come with manufacturer warranties?
Warranty coverage varies by item and condition. New old stock items typically include full manufacturer warranty if still valid. Demo and display items may have limited or no manufacturer warranty remaining. We clearly state warranty status in each product description. All sales are final on relocation sale items.
How does shipping work for relocation sale items?
We ship relocation sale items using the same careful packaging methods as our regular inventory. Shipping costs are calculated at checkout based on size and weight. For multiple item purchases, we'll combine shipping where possible to save you money. Large items like subwoofer boxes may require freight shipping with additional costs.
Can I return or exchange relocation sale items?
All relocation sale items are sold as-is with no returns or exchanges. We encourage local pickup customers to inspect items before purchasing. For shipped items, we provide detailed descriptions and photos. Since we're relocating, we cannot accommodate returns or warranty service after the sale period ends.