--- product_id: 9148982 title: "BOSS Audio Systems PH4.500 Phantom 2000-Watts Full Range Class AB 4 Channel 2-8 Ohm Stable Amplifier with Remote Subwoofer Level Control" brand: "boss audio systems" price: "A$46" currency: AUD in_stock: false reviews_count: 9 url: https://www.desertcart.com.au/products/9148982-boss-audio-systems-ph4-500-phantom-2000-watts-full-range store_origin: AU region: Australia --- # 2000W Power Remote Control 4 Channels BOSS Audio Systems PH4.500 Phantom 2000-Watts Full Range Class AB 4 Channel 2-8 Ohm Stable Amplifier with Remote Subwoofer Level Control **Brand:** boss audio systems **Price:** A$46 **Availability:** ❌ Out of Stock ## Summary > 🎶 Elevate Your Sound Game! ## Quick Answers - **What is this?** BOSS Audio Systems PH4.500 Phantom 2000-Watts Full Range Class AB 4 Channel 2-8 Ohm Stable Amplifier with Remote Subwoofer Level Control by boss audio systems - **How much does it cost?** A$46 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/9148982-boss-audio-systems-ph4-500-phantom-2000-watts-full-range) ## Best For - boss audio systems enthusiasts ## Why This Product - Trusted boss audio systems brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Design:** Engineered for longevity with a six-year warranty. - • **Unleash the Power:** Experience a staggering 2000 Watts of pure audio bliss. - • **Versatile Connectivity:** Seamlessly connect with 4 channels and variable gain control. - • **Tailored Sound Experience:** Built-in low/high-pass crossovers and 18dB bass boost for customized audio. - • **Remote Control Convenience:** Adjust your subwoofer levels from the comfort of your seat. ## Overview The BOSS Audio Systems PH4.500 Phantom is a powerful Class A/B amplifier delivering 2000 Watts across four channels, designed for audiophiles seeking superior sound quality and flexibility. With features like remote subwoofer control and built-in crossovers, it’s perfect for any audio setup. ## Description MOSFET Power SupplyMetal–Oxide–Semiconductor Field-Effect Transistor is a transistor used for amplifying or switching electronic signals. We use it in our computers, our telephones, game consoles, cars, electrical appliances, and in this case, our Amplifiers. They are found in systems where information is processed or stored. A MOSFET is basically an electrical switch that allows the flow of electrical current. An electrical switch has two possible states, ON or OFF. This is where the MOSFET performs its most important role in our D Class amplifiers by allowing or preventing the flow of power and creating an efficient amplifier.General FeaturesBridgeable outputsTri-Mode capable2 Ohm stable stereo operation with output power increaseThermal and speaker short protectionSoft Turn-On CircuitRemote turn-on/turn-off circuitBlack anodized heatsinkLED power and protection indicatorsWhat Comes in the Box?Remote Subwoofer Level ControlHigh input cable with connectorInstruction ManualMounting Screws View largerFull Range, Class A/B TopologyA class A/B amplifier uses two groups of transistors and it is generally considered to be the best compromise of the class 'A' and class 'B' put together. A pure class ‘A’ amplifier typically has an enormous amount of current flowing through its output transistors with no audio signal. A pure class ‘B’ amplifier has no current flowing through its outputs with no audio signal. This eliminates virtually all of the crossover distortion that’s possible with class ‘B’ amplifiers. A class A/B amplifier is much more efficient than a class ‘A’ but without the possible distortion of a class ‘B’. As if that wasn’t enough, with a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers. By just a flip of a switch from Full to Low, the PH4.500 will change from offering a complete range of frequencies that you need to be able to listen to your 2/3/4 or 5 way speakers to the “Low” that you need for a subwoofer application.View largerVariable CrossoverSpeakers reproduce sound based on high, low, or mid-range frequencies. This process is called the crossover effect and occurs because the vast majority of audio systems cannot cover the entire spectrum sufficiently to minimize sound distortion and maintain an appropriate frequency ratio. In the case of our PH4.500 amplifier, a variable crossover is offered so that you, the listener, can have the ability to set the frequency at which the crossover occurs, thereby setting specific sound specifications such as the bass, mid-range, and high frequency reproduction.View larger4/3/2 ChannelThis feature comes in handy for a few different installation applications and is very versatile. The “4” channel allows you to use the PH4.500 as a 4 channel amplifier by hooking up 4 speakers to it: Fronts and rears. The “3” channel is slightly different. It allows you to hook up 2 speakers to channels 1+2 and use the remaining 3+4 channels for 1 subwoofer in bridged mode. And lastly, the functionality of the “2” channel allows channels 1+2 to be bridged to accommodate one speaker OR one subwoofer. Channels 3+4 can be used in the exact same application.View largerVariable Bass BoostThe difference Bass Boost and Variable Bass Boost is that with Bass Boost you either have extra bass or you don’t. But with Variable Bass Boost you have control of exactly how much BASS you want to pump out to your subwoofer(s). You get Variable Bass Boost with the PH4.500 Amplifier.View largerLow and High Level InputsThe Phantom series amplifiers have two different ways to get a signal into it. One way is called Low level input and the other is called High level input. A low level input is measured in voltages. It comes in the form of RCA outputs from the back of your receiver and goes to the RCA inputs on your amplifier. A High level input is measured in wattages. It comes in the form of one positive and one negative wire from the back of your receiver to the input terminal of your amplifier with the same wire. Low-level (RCA) input wiring is preferred for best audio performance. Always use a high-quality RCA cable for best audio performance. WARNING: Do not connect BOTH the high level and low level inputs from your receiver to your amplifier at the same time!View largerGold-plated RCA low level and high level inputs ## Features - Amplifier Class: Class A/B - Technology: MOSFET - Number of Output Channels: 4 - Total Power: 2000 Watts - Max Bridged Power @ 4 Ohms: 1000 Watts x 2 - Max Power @ 2 Ohms: 500 Watts x 4 - RMS Power @ 4 Ohms: 200 Watts x 4 - Frequency Response: 9 to 50000 Hz - Four-channel Phantom amplifier with MOSFET power supply and trimode operation - Delivers 500 Watts x 4 at 2 ohms; 200 Watts x 2 at 4 ohms; 1000 Watts x 2 bridged - Line and speaker level inputs with variable gain control - Built-in low- and high-pass variable crossovers; 18dB bass boost ## Technical Specifications | Specification | Value | |---------------|-------| | Item dimensions L x W x H | 15.5 x 2.25 x 9.5 inches | | Manufacturer | Boss Audio Systems, Inc. | | Mounting Type | Surface Mount | | Brand | BOSS Audio Systems | | Number of Channels | 4 | | Global Trade Identification Number | 00791489112123 | | UPC | 791489112123 151903478325 | | Item Weight | 12 pounds | | Product Dimensions | 15.5 x 2.25 x 9.5 inches | | Item model number | PH4.500 | | Is Discontinued By Manufacturer | Yes | | Preamp Outputs | 4 | | Warranty | SIX YEARS | | Weight | 5.56 Kilograms | ## Product Details - **Item dimensions L x W x H:** 15.5 x 2.25 x 9.5 inches - **Manufacturer:** Boss Audio Systems, Inc. - **Mounting Type:** Surface Mount - **Brand:** BOSS Audio Systems - **Number of Channels:** 4 ## Images ![BOSS Audio Systems PH4.500 Phantom 2000-Watts Full Range Class AB 4 Channel 2-8 Ohm Stable Amplifier with Remote Subwoofer Level Control - Image 1](https://m.media-amazon.com/images/I/51FQPeniFRL.jpg) ## Available Options This product comes in different **Product Packaging, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Good product *by N***N on Reviewed in the United States on March 18, 2012* Love this product, works well, good features. Hoked it up myself with two 1200 watt Kenwood Subs...If set right sounds amazing and remote works. It controls the power useage to the subs. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Worth the price *by K***T on Reviewed in the United States on November 1, 2013* Bought it over a year ago.... still working,, crisp sound quality to drive 4 pioneer speakers. Worth the price i paid for. ### ⭐ 1.0 out of 5 stars BAD AMP *by R***3 on Reviewed in the United States on November 10, 2012* After 2 hrs using it got very hot and stoped working. This amp whent to protection mode in 2 hrs DONT BUY IT!!!!!! --- ## 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.com.au/products/9148982-boss-audio-systems-ph4-500-phantom-2000-watts-full-range](https://www.desertcart.com.au/products/9148982-boss-audio-systems-ph4-500-phantom-2000-watts-full-range) --- *Product available on Desertcart Australia* *Store origin: AU* *Last updated: 2026-04-25*