--- product_id: 371003575 title: "SMP100 Subwoofer Amplifier 100W Class D Digital Subwoofer Amplifier Rated 100W Max, Black (SMP-100)" brand: "osd audio" price: "¥81118" currency: JPY in_stock: true url: https://www.desertcart.jp/products/371003575-smp100-subwoofer-amplifier-100w-class-d-digital-subwoofer-amplifier-rated store_origin: JP region: Japan --- # Class D High Efficiency Compact 12x14x5 cm 100W Peak Power SMP100 Subwoofer Amplifier 100W Class D Digital Subwoofer Amplifier Rated 100W Max, Black (SMP-100) **Brand:** osd audio **Price:** ¥81118 **Availability:** ✅ In Stock ## Summary > 🎶 Tiny Amp, Titanic Bass — Feel Every Beat! ## Quick Answers - **What is this?** SMP100 Subwoofer Amplifier 100W Class D Digital Subwoofer Amplifier Rated 100W Max, Black (SMP-100) by osd audio - **How much does it cost?** ¥81118 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/371003575-smp100-subwoofer-amplifier-100w-class-d-digital-subwoofer-amplifier-rated) ## Best For - osd audio enthusiasts ## Why This Product - Trusted osd audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Multi-Use Amplifier:** Powers both subwoofers and in-ceiling speakers, making it a versatile addition to any home theater setup. - • **Cool & Compact Design:** Class D tech keeps it efficient and cool in a sleek form factor under 6 inches wide—fits anywhere. - • **Precision Bass Control:** Adjust phase, crossover (35Hz-160Hz), and volume to tailor your perfect bass profile. - • **Room-Shaking Bass Power:** Delivers up to 100W peak for deep, crisp low frequencies that transform your audio experience. - • **Universal Compatibility:** Works seamlessly with all receivers via RCA and speaker-level inputs for ultimate system flexibility. ## Overview The OSD SMP100 is a compact yet powerful 100W Class D digital subwoofer amplifier designed for home theater and whole-house audio systems. Featuring adjustable crossover, phase, and volume controls, it delivers precise, room-shaking bass while maintaining high efficiency and a small footprint. Compatible with all receivers through RCA and speaker-level inputs, it also doubles as a distributed amplifier for in-ceiling speakers, making it a versatile, budget-friendly powerhouse for audiophiles seeking premium low-frequency performance. ## Description OSD Audio's Class D Digital Subwoofer Amplifier is a compact 100W amp designed to power passive subwoofers used in a home theater or whole-house audio system. We call this our “tiny but mighty” powered sub because it measures less than six inches wide but supplies an in-wall or stand-alone subwoofer the power it needs so you can experience room-shaking low-frequency impact (bass) on movie and music soundtracks. The advanced crossover circuit can be set at different frequency ranges (35Hz to 160Hz) and is adjustable with a front-panel control knob. Other features include the front-panel adjustable phase and volume controls to dial in just the right amount of low-frequency effects (LFE). The SMP100 uses Class D amplifier technology that combines the best qualities of both Class A and B amp protocols into a highly efficient and compact digital design that is ideal for budget-minded users who want a feature-rich digital sub amp that does not run hot or take up a lot of space. With both RCA and speaker level connections, the SMP100 also acts as a distributed amplifier and will power a pair of in-ceiling speakers in addition to a sub. ## Features - BRING IN THE BASS: A highly efficiency subwoofer amplifier that serves up big bass with up to 100W peak/40W RMS for deep, crisp, clean low frequency sound effects - WORKS WITH ALL RECEIVERS: Compatible with older and newer source equipment and includes both RCA and speaker level input/outputs for greater flexibility with various home theater audio systems - ADJUSTABLE CONTROLS: Includes auto on/off sensing as well as phase, crossover and volume controls to dial in just the right amount of bass Key Product Features - EFFICIENT CLASS D TECHNOLOGY: A highly efficient Class D sub amp that is ideal for budget-minded users who want a feature-rich digital sub amp that does not run hot or take up a lot of space - COMPACT DESIGN: Measures less than 6 inches wide and 5 inches deeps so it can fit just about anywhere ## Technical Specifications | Specification | Value | |---------------|-------| | Item dimensions L x W x H | 12.1 x 14.2 x 4.6 Centimeters | | Manufacturer | OSD Audio | | Mounting Type | Freestanding | | Brand | OSD Audio | | Number of Channels | 1 | | Output Power | 4E+1 Watts | | Package Type Name | Box" or "Retail Packaging | | Specification Met | Etl, Ce | | UPC | 819603019377 | | Brand Name | OSD Audio | | Speaker Type | Subwoofer, Surround Sound | | Colour Name | Black | | Peak Power Handling - Speakers | 100 Watts | | RMS Power Range - Amplifiers | 100 Watts | | Product Dimensions | 12.07 x 14.22 x 4.57 cm; 793.79 g | | Item model number | SMP-100 | | Item Weight | 794 g | ## Product Details - **Item dimensions L x W x H:** 12.1 x 14.2 x 4.6 Centimeters - **Manufacturer:** OSD Audio - **Mounting Type:** Freestanding - **Brand:** OSD Audio - **Number of Channels:** 1 ## Images ![SMP100 Subwoofer Amplifier 100W Class D Digital Subwoofer Amplifier Rated 100W Max, Black (SMP-100) - Image 1](https://m.media-amazon.com/images/I/713AFgP-VOL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: how much power rms at 8 ohms?** A: The manual mine came with "the 1000 Watt version" -- details it at providing 497 watts RMS at 8 ohms. **Q: Anyone have an issue with the speaker out port not working?** A: First off , do you have a audio signal out from the receiver/ amp to the input of subwoofer? Please check wiring diagram of the manual it should work. **Q: Does the SMP100 require a 12v trigger cable to work properly?** A: The SMP100 includes auto sensing that turns on the amp when an audio signal is detected then turns off automatically after 15 minutes when a signal is not detected, but it also has the manual on/off switch. **Q: Will this work with a polk s35 center channel speaker?** A: Yes. But this amp would be overkill. Simply get an a/v receiver instead. ## Frequently Bought Together - OSD SMP100 Subwoofer Amplifier 100W Class D Digital Subwoofer Amplifier Rated 100W Max - OSD Nero IWSDUAL8 in Wall 300W Subwoofer Dual 8" Graphite Cones Magnetic Grill --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/371003575-smp100-subwoofer-amplifier-100w-class-d-digital-subwoofer-amplifier-rated](https://www.desertcart.jp/products/371003575-smp100-subwoofer-amplifier-100w-class-d-digital-subwoofer-amplifier-rated) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-11*