--- product_id: 154757097 title: "Ultra-Lightweight 1U 4-Channel PA/DJ Power Amplifier, 4 x 1400W at 4-ohm, Supports 2, 4 & 8-ohm (ST-UPDM4C)" brand: "sound town" price: "794301CFA" currency: XOF in_stock: true reviews_count: 10 category: "Sound Town" url: https://www.desertcart.sn/products/154757097-ultra-lightweight-1u-4-channel-pa-dj-power-amplifier-4 store_origin: SN region: Senegal --- # 4 x 1400W @ 4Ω max power Ultra-lightweight 1U rackmount Stereo, Parallel & Bridge modes Ultra-Lightweight 1U 4-Channel PA/DJ Power Amplifier, 4 x 1400W at 4-ohm, Supports 2, 4 & 8-ohm (ST-UPDM4C) **Brand:** sound town **Price:** 794301CFA **Availability:** ✅ In Stock ## Summary > 🎧 Power Meets Portability — Amplify Your Sound, Not Your Load! ## Quick Answers - **What is this?** Ultra-Lightweight 1U 4-Channel PA/DJ Power Amplifier, 4 x 1400W at 4-ohm, Supports 2, 4 & 8-ohm (ST-UPDM4C) by sound town - **How much does it cost?** 794301CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/154757097-ultra-lightweight-1u-4-channel-pa-dj-power-amplifier-4) ## Best For - sound town enthusiasts ## Why This Product - Trusted sound town brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Energy-Smart UPDM Tech:** Cut power consumption and heat with cutting-edge Unipolar Pulse Density Modulation for longer gigs and greener setups. - • **Built-In Speaker Protection:** Overload safeguards keep your PA speakers and subs safe, so you focus on the crowd, not the gear. - • **Adaptive Multi-Mode Flexibility:** Seamlessly switch between Stereo, Parallel, and Bridge modes to tailor your rig’s power and channel needs. - • **Featherweight Tour-Ready Design:** Less than 9 lbs in a rugged 1U metal chassis—effortless transport meets pro durability. - • **Massive 5600W Total Power Output:** Unleash stadium-grade sound with 4 channels delivering up to 1400W each at 4-ohm load. ## Overview The Sound Town ST-UPDM4C is a professional-grade 4-channel power amplifier delivering up to 1400W per channel at 4-ohms using advanced UPDM technology. Its ultra-lightweight 1U rackmount design combines rugged durability with effortless portability, perfect for touring pros and event managers. Flexible operating modes and built-in overload protection ensure optimal performance and speaker safety, making it a top choice for powering multi-speaker PA setups with energy-efficient, high-output sound. ## Description Product description ST-UPDM4C 4-Channel Professional Power Amplifier The Sound Town ST-UPDM4C is a professional 4-channel UPDM power amplifier. The UPDM (Unipolar Pulse Density Modulation) technology enables the unit to keep the power consumption to minimum. Compared to traditional Class-AB amplifier, the Sound Town ST-UPDM4C is more efficient and much lighter with less power dissipated as heat. It delivers 4 X 1400W watts at a 4-ohm, 4 X 800 watts power output at 8-ohm and provides more headroom to your PA rig. You can also easily integrate this amplifier to your PA rig thanks to the universal XLR input and speakon outputs. The amplifier also comes with overload protection to protect your PA speakers and subs. FEATURES 4-channel UPDM Power Amplifier 4 x 800W RMS @ 8-Ohm Stereo XLR Input and Speakon Output Overload Protection Sturdy Construction Efficient Operation 4-CHANNEL POWER AMP Output Power: 4 x 800W RMS @ 8-Ohm Stereo, 4 x 1400W RMS @ 4-Ohm Stereo; Unipolar Pulse Density Modulation (UPDM) amplifier consumes ultra-low power RELIABLE PROTECTION Overload protection function keeps your PA speaker and subwoofers safe; Rugged, heavy duty metal 1U rack mount chassis holds up to touring applications. Ultra-lightweight (less than 9 lbs) makes it easy to transport GREAT CONNECTING FLEXIBILITY XLR input and speakon output connectors provide great compatibility and enable the amplifier to easily fit into your PA rigs Review: Durable and powerful - I run a small sound company that does about 15 concerts and festivals a year. I have to run sound in a 360 degree setup which can be challenging. I use this amp to power 4 -12" two way Mackies, covering about 500 people, and it has performed excellently. I received more complements on my sound this year, than any of the past 20 years. I used it all year, pushed more than my previous amp (QSC) and it performed better. I am able to send individual signals to each speaker and control the sound much better. It only takes up one rack space and is very lightweight. I will probably buy another one very soon. Review: Good Buy - I was looking for an option to run passive speakers when I didn't have my actives with me, as well as more than 2 channels. This amp has plenty of power over 4 channels. I would buy it again, if I needed to. ## Features - ULTRA-EFFICIENT UPDM POWER: Leveraging Unipolar Pulse Density Modulation (UPDM) technology, this amplifier delivers massive power with ultra-low energy consumption - HIGH-OUTPUT PERFORMANCE: 4 x 800W RMS at 8-Ohm Stereo, 4 x 1520W RMS at 4-Ohm Stereo, 2 x 2100W RMS at 8-Ohm bridge - FLEXIBLE OPERATING MODES: Easily switch between Stereo, Parallel, and Bridge modes to perfectly match your system's power and channel requirements. - PRECISE INPUT MATCHING: Selectable input sensitivity (0.77V / 1.0V / 1.44V) ensures optimal signal levels from source devices. Built-in overload safeguards protect your connected PA speakers and subwoofers for worry-free operation - TOUR-GRADE, LIGHTWEIGHT 1U: Packing immense power into a rugged, heavy-duty 1U rackmount metal chassis. Remarkably lightweight for effortless transport and setup ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07WZY4FWT | | Best Sellers Rank | #10,956 in Musical Instruments ( See Top 100 in Musical Instruments ) #48 in Power Amplifiers | | Brand | Sound Town | | Brand Name | Sound Town | | Customer Reviews | 3.5 out of 5 stars 28 Reviews | | Item Dimensions | 19 x 6.5 x 1.7 inches | | Item dimensions L x W x H | 19 x 6.5 x 1.7 inches | | Manufacturer | Sound Town | | Material Type | Metal | | Model | ST-UPDM4C | | Mounting Type | Rackmount | | Number of Channels | 4 | | Output Power | 1400 Watts | | Package Type Name | box | | Part Number | Sound Town | | UPC | 810062034444 | | Warranty Description | 1 year. | ## Product Details - **Brand:** Sound Town - **Item dimensions L x W x H:** 19 x 6.5 x 1.7 inches - **Manufacturer:** Sound Town - **Mounting Type:** Rackmount - **Number of Channels:** 4 ## Images ![Ultra-Lightweight 1U 4-Channel PA/DJ Power Amplifier, 4 x 1400W at 4-ohm, Supports 2, 4 & 8-ohm (ST-UPDM4C) - Image 1](https://m.media-amazon.com/images/I/61nMLQsTBVL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Would this amp be a good match for 4 mr. dj pro115s speakers?** A: This amp drives 1700watts @4Ohm and 950wats @8Ohm. So check with your speaker impedance carefully. **Q: I have 1000 watts 8 ohm monitor this good .** A: Yes. You have to be a bit careful because this amp is powerful. I popped a tweeter on one of my 800W monitors because of a dropped microphone. **Q: If this amplifier uses 15 amps at 110V, which is 1650 watts, how it is capable of putting out 2 channels audio at 1700 watts each? Not possible.** A: @ 4Ohms it does put out 1700 watts on a 30 amp circuit. I tested it myself. I called BS on the specs but bought it anyway and tested it. **Q: Can i use all channels independently? i know it sounds stupid but i want to be sure? is the fan noisy?** A: Dear customer, There is no stupid questions! And yes, you can use all channels independently. As this is not a traditional class-AB amplifier, the amp overall is much quieter. Feel free to let us know if you have any additional questions. Thank you, ## Customer Reviews ### ⭐⭐⭐⭐⭐ Durable and powerful *by D***K on November 5, 2022* I run a small sound company that does about 15 concerts and festivals a year. I have to run sound in a 360 degree setup which can be challenging. I use this amp to power 4 -12" two way Mackies, covering about 500 people, and it has performed excellently. I received more complements on my sound this year, than any of the past 20 years. I used it all year, pushed more than my previous amp (QSC) and it performed better. I am able to send individual signals to each speaker and control the sound much better. It only takes up one rack space and is very lightweight. I will probably buy another one very soon. ### ⭐⭐⭐⭐ Good Buy *by C***S on March 19, 2023* I was looking for an option to run passive speakers when I didn't have my actives with me, as well as more than 2 channels. This amp has plenty of power over 4 channels. I would buy it again, if I needed to. ### ⭐⭐⭐⭐⭐ Surprisingly good. Reliable, sounds great. *by D***E on August 7, 2021* I am a pro audio professional. I work with bands and DJs. I know that sound town is not really a respected “pro” brand. It’s kind of “cheapo”. Like Gemini or American DJ or something like that. But… I just needed something in my little test rack that i keep just inside my garage door so I could plug in and quickly test speakers as they came back from each gig. It didn’t have to be great. It just had to work. I have to say, that I am actually very impressed with how this amplifier sounds, considering how small it is, and how reliable it has been so far. I use it for testing everything from subwoofers to stage monitors to full range speakers. I even use it to test out active three-way larger PA speakers so each channel is doing a separate frequency range, I.e. external sub channel 1, lows ch2, mids ch3, highs ch4. Not only does it do all of this without any issues, but it seems to be loud as hell with plenty of headroom. I haven’t taken this to a gig, because I use QSC and Powersoft for the real gigs, but this little amp is worth a look if you are a small DJ or band on a budget. It’s actually hard to believe how much output this thing has while still being small enough to put in a backpack. Amazing. ## Frequently Bought Together - Sound Town Ultra-Lightweight 1U 4-Channel PA/DJ Power Amplifier, 4 x 1400W at 4-ohm, Supports 2, 4 & 8-ohm (ST-UPDM4C) - GearIT XLR Microphone Cable (10 Feet, 10-Pack) - XLR Male to Female, Balanced Shielded Cable for Mic Mixer, Recording Studio, Podcast - Black, 10ft, 10 Pack - Yuyaokk 2Pack 100 ft Speakon to 1/4" Male Speaker Cables, Professional 12 Gauge AWG Wire Audio Amplifier Connection Cord, DJ/PA Speaker Cable Wire with Twist Lock. --- ## 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.sn/products/154757097-ultra-lightweight-1u-4-channel-pa-dj-power-amplifier-4](https://www.desertcart.sn/products/154757097-ultra-lightweight-1u-4-channel-pa-dj-power-amplifier-4) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-21*