Audison SR 4.500 Amplifier

--> <div class="wpb-content-wrapper"><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <h3 class="product_title entry-title"><span style="color: #3366ff;">Audison </span>SR 4.500 Amplifier</h3> <div class="audi--product-description-paragraph"> <p>The Audison SR 4.500 4-channel amplifier with crossover features great power packed into ultra-compact dimensions (130 W x 4 @ 4Ω).As far as the electronic design is concerned, every aesthetic and functional detail of the Audison SR 4.500 has been taken care of, resulting in a compact amplifier made of extruded aluminum with rounded corners, which facilitates the installation of the product in narrow spaces. Thanks to the generous heat sinks on the two short sides of the amplifiers, there is no need for internal cooling fans, which often cause noise and dust accumulation. In keeping with tradition, the SR amplifiers confirm their vocation for versatility by including on all models a complete filter section, suitable for any kind of audio system configuration. The controls, protected by a satin-finished aluminium panel, are located on the top panel of the amplifier, so that they can be easily reached from above, even after the product has been installed. When the system includes an Audison bit processor, the filter section can be totally excluded</p> </div> </div> </div> <div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div></div></div></div><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div> <div class="wpb_single_image wpb_content_element vc_align_center wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img decoding="async" class="vc_single_image-img " src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/Audison_SR-4_500-R02_ESPLOSO-PLACCHETTA-550x300.webp" width="550" height="300" alt="Audison SR 4.500 Amplifier" title="Audison_SR-4_500-R02_ESPLOSO-PLACCHETTA" loading="lazy" /></div> </figure> </div> </div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_tta-container" data-vc-action="collapseAll"><div class="vc_general vc_tta vc_tta-accordion vc_tta-color-sky vc_tta-style-classic vc_tta-shape-rounded vc_tta-spacing-1 vc_tta-controls-align-center vc_tta-o-all-clickable"><div class="vc_tta-panels-container"><div class="vc_tta-panels"><div class="vc_tta-panel" id="1731678339268-3908876b-3c97" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1731678339268-3908876b-3c97" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">Amplifier Tech Data</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr> <td>Channels</td> <td>4</td> </tr> <tr> <td>Class</td> <td>D-Class</td> </tr> <tr> <td>Hi Level Input</td> <td>Yes</td> </tr> <tr> <td>Low Level Input</td> <td>Yes</td> </tr> <tr> <td>Digital Input</td> <td>No</td> </tr> <tr> <td>Power supply voltage / fuse</td> <td>11 ÷ 15 VDC / 2 x 25A</td> </tr> <tr> <td>Operating power supply voltage</td> <td>6.5 ÷17 VDC</td> </tr> <tr> <td>Idling current</td> <td>1.7 A</td> </tr> <tr> <td>Idling current when off</td> <td>0.09 mA</td> </tr> <tr> <td>Consumption @ 14.4 VDC, 2Ω, Max Musical Power</td> <td>40 A</td> </tr> <tr> <td>Remote OUT</td> <td>6.5 ÷ 15 VDC (150 mA)</td> </tr> <tr> <td>Remote IN</td> <td>6.5 ÷ 15 VDC (1 mA)</td> </tr> <tr> <td>ART – Automatic Remote Turn on/off from OUTPUT BTL speakers (Selectable)</td> <td>1.5 ÷ 7 VDC</td> </tr> </tbody> </table> </div> </div> </div></div><div class="vc_tta-panel" id="1731678339280-69f54a1e-1809" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1731678339280-69f54a1e-1809" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">Amplifier Stage</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr> <td>Distortion – THD @ 100 Hz, 4Ω, 70% Rated Power</td> <td>0.08 %</td> </tr> <tr> <td>Bandwidth A</td> <td>10 Hz ÷ 35 kHz</td> </tr> <tr> <td>S/N ratio A</td> <td>105 dBA</td> </tr> <tr> <td>Damping factor A</td> <td>200</td> </tr> <tr> <td>Input sensitivity Pre-In</td> <td>0.2 ÷ 5 VRMS</td> </tr> <tr> <td>Input sensitivity Speaker-In</td> <td>0.8 ÷ 20 VRMS</td> </tr> <tr> <td>Total Power RMS</td> <td>880 W</td> </tr> <tr> <td>Minimum load impedance</td> <td>@4Ch: 2Ω<br /> @ 3Ch: 2Ω 2Ω 4Ω<br /> @ 2Ch: 4Ω</td> </tr> <tr> <td>Output Power (RMS) @14.4 VDC, 1% THD</td> <td>4Ch 130 W x 4 (4Ω)</p> <p>4Ch 220 W x 4 (2Ω)</p> <p>3Ch 120 W x 2 (4Ω) 480 W x 1 (4Ω)</p> <p>3Ch 220 W x 2 (2Ω) 440 W x 1 (4Ω)</p> <p>2Ch 450 W x 2 (4Ω)</td> </tr> <tr> <td>Adjustable Crossover</td> <td>Yes</td> </tr> </tbody> </table> </div> </div> </div></div><div class="vc_tta-panel" id="1731678446080-6fc22c80-5ea1" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1731678446080-6fc22c80-5ea1" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">CEA Specifications</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr> <td>Output power @ 4Ω, 1% THD N, 14.4 V</td> <td>Output power @ 4Ω, 1% THD N, 14.4 V: 125 W x 4 Ch</td> </tr> <tr> <td>SN ratio (ref. 1W output)</td> <td>SN ratio (ref. 1W output): 83 dBA</td> </tr> </tbody> </table> </div> </div> </div></div><div class="vc_tta-panel" id="1732808856144-5dc65484-3420" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1732808856144-5dc65484-3420" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">Inputs</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr> <td>Input Type</td> <td>Pre-In / Speaker-In</td> </tr> <tr> <td>Filters Outputs</td> <td>PRE OUT full range (Input A)</td> </tr> <tr> <td>Filter Pass A</td> <td>Front Ch Filters – Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.</td> </tr> <tr> <td>Filter Pass B</td> <td>Front Ch Filters – Full Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.</td> </tr> <tr> <td>Filter Pass C</td> <td>Rear Ch Filters – Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.</td> </tr> <tr> <td>Filter Pass D</td> <td>Rear Ch Filters – Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct</td> </tr> <tr> <td>Channel Mono</td> <td>A/B Ch MONO IN (on/off) Yes</td> </tr> <tr> <td>Inputs/Outputs Sub CH</td> <td>(-20 ÷ 6) dB</td> </tr> <tr> <td>Inputs/Outputs Bass Boost</td> <td>B Ch (0 ÷12) dB</td> </tr> </tbody> </table> </div> </div> </div></div><div class="vc_tta-panel" id="1732883256590-b54c63aa-7ae2" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1732883256590-b54c63aa-7ae2" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">Dimensions</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <div class="col-lg-12 col-12 audi--column-info"></div> <div class="col-lg-12 col-12 audi--column-info"> <div class="table-responsive-sm"> <table class="table caption-top"> <tbody> <tr class="hz--dimensions-has-image"> <td>Dimension A</td> <td>264 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Dimension B</td> <td>234 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Dimension C</td> <td>155 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Dimension D</td> <td>135 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Dimension E</td> <td>47.5 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Weight</td> <td>2.12kg</td> </tr> </tbody> </table> <p><a class="float-start mb-5 hz-image-dimensions" href="https://static.audison.com/media/2023/06/Audison_SR_dim-35.png" data-fancybox="product_image_dimensions"><img loading="lazy" decoding="async" class="mw-30" src="https://static.audison.com/media/2023/06/Audison_SR_dim-35.png" alt="SR 4.500" width="899" height="832" /></a></p> </div> </div> </div> </div> </div></div></div></div></div></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_single_image wpb_content_element vc_align_left wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img loading="lazy" decoding="async" width="300" height="100" src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_Fully_bridgeable_low-300x100.webp" class="vc_single_image-img attachment-medium" alt="" title="audison_Fully_bridgeable_low" srcset="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_Fully_bridgeable_low-300x100.webp 300w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_Fully_bridgeable_low-768x255.webp 768w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_Fully_bridgeable_low-433x144.webp 433w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_Fully_bridgeable_low-937x311.webp 937w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_Fully_bridgeable_low.webp 1000w" sizes="auto, (max-width: 300px) 100vw, 300px" /></div> </figure> </div> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Maximum versatility thanks to the bridging option for each pair of channels.</p> </div> </div> </div></div></div><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_single_image wpb_content_element vc_align_left wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img loading="lazy" decoding="async" width="300" height="100" src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_All_Channels_Driven-300x100.webp" class="vc_single_image-img attachment-medium" alt="" title="audison_All_Channels_Driven" srcset="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_All_Channels_Driven-300x100.webp 300w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_All_Channels_Driven-768x255.webp 768w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_All_Channels_Driven-433x144.webp 433w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_All_Channels_Driven-937x311.webp 937w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_All_Channels_Driven.webp 1000w" sizes="auto, (max-width: 300px) 100vw, 300px" /></div> </figure> </div> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>The “All Channels Driven” design philosophy guarantees that the Audison amplifier delivers the rated power on all channels simultaneously. To reach that target, Audison designed the amplifier power supply to handle the cumulative power demand.</p> </div> </div> </div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_single_image wpb_content_element vc_align_left wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img loading="lazy" decoding="async" width="300" height="131" src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_adt_low-300x131.webp" class="vc_single_image-img attachment-medium" alt="" title="audison_adt_low" srcset="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_adt_low-300x131.webp 300w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_adt_low-768x336.webp 768w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_adt_low-433x189.webp 433w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_adt_low-937x409.webp 937w, https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/audison_adt_low.webp 1000w" sizes="auto, (max-width: 300px) 100vw, 300px" /></div> </figure> </div> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <div class="float-start w-100 audi--headline-technologies">Audison D-Class technology</div> <div class="float-start w-100 audi--description-technologies audi--color-grey"> <p>ADT uses a switching frequency twice as fast as many other modern Class D amplifiers using very high-tolerance component parts to keep the timing correct even during temperature extremes. The higher switching frequency of Audison Class D moves noise much farther away from the audible band. Audison Class D amplifiers also use a steeper 4th-order analog lowpass filter, rather than the simpler 2nd-order lowpass filters usually used in competing designs. The steeper filter will keep noise much lower in amplitude – which is good for controlling EMI and preventing infrasonic noise from getting to the tweeters. It also keeps phase shift outside the audible range. The cost is higher – twice as many components are needed for a 4th-order filter compared to the usual 2nd-order filter, and each output channel needs its own filter – but Audison determined through exhaustive listening testing that this design was the best-sounding approach.</p> </div> </div> </div> </div></div></div><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_single_image wpb_content_element vc_align_left wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img loading="lazy" decoding="async" width="300" height="132" src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/Uss-1-300x132-1.webp" class="vc_single_image-img attachment-medium" alt="" title="Uss-1-300x132" /></div> </figure> </div> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Universal Speaker Simulator technology on high-level inputs for maximum compatibility with any type of Head-Unit OEM Source</p> </div> </div> <div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div> <div class="wpb_single_image wpb_content_element vc_align_center wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img decoding="async" class="vc_single_image-img " src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/Audison_SR-4_500-R02_PANNELLI-570x340.webp" width="570" height="340" alt="Audison SR 4.500 Amplifier" title="Audison_SR-4_500-R02_PANNELLI" loading="lazy" /></div> </figure> </div> </div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-3"><div class="vc_column-inner"><div class="wpb_wrapper"></div></div></div><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div><div class="vc_btn3-container vc_btn3-center vc_do_btn" ><a class="vc_general vc_btn3 vc_btn3-size-md vc_btn3-shape-rounded vc_btn3-style-3d vc_btn3-block vc_btn3-color-sky" href="http://audiofile-incar.co.uk/wp-content/uploads/2024/08/Audison-SR-4.500-Amplifier.pdf" title="">Tech Sheet</a></div></div></div></div><div class="wpb_column vc_column_container vc_col-sm-3"><div class="vc_column-inner"><div class="wpb_wrapper"></div></div></div></div> </div><!-- Audison SR 4.500 Amplifier The Audison SR 4.500 4-channel amplifier with crossover features great power packed into ultra-compact dimensions (130 W x 4 @ 4Ω).As far as the electronic design is concerned, every aesthetic and functional detail of the Audison SR 4.500 has been taken care of, resulting in a compact amplifier made of extruded aluminum with rounded corners, which facilitates the installation of the product in narrow spaces. Thanks to the generous heat sinks on the two short sides of the amplifiers, there is no need for internal cooling fans, which often cause noise and dust accumulation. In keeping with tradition, the SR amplifiers confirm their vocation for versatility by including on all models a complete filter section, suitable for any kind of audio system configuration. The controls, protected by a satin-finished aluminium panel, are located on the top panel of the amplifier, so that they can be easily reached from above, even after the product has been installed. When the system includes an Audison bit processor, the filter section can be totally excluded Amplifier Tech Data Channels 4 Class D-Class Hi Level Input Yes Low Level Input Yes Digital Input No Power supply voltage / fuse 11 ÷ 15 VDC / 2 x 25A Operating power supply voltage 6.5 ÷17 VDC Idling current 1.7 A Idling current when off 0.09 mA Consumption @ 14.4 VDC, 2Ω, Max Musical Power 40 A Remote OUT 6.5 ÷ 15 VDC (150 mA) Remote IN 6.5 ÷ 15 VDC (1 mA) ART – Automatic Remote Turn on/off from OUTPUT BTL speakers (Selectable) 1.5 ÷ 7 VDC Amplifier Stage Distortion – THD @ 100 Hz, 4Ω, 70% Rated Power 0.08 % Bandwidth A 10 Hz ÷ 35 kHz S/N ratio A 105 dBA Damping factor A 200 Input sensitivity Pre-In 0.2 ÷ 5 VRMS Input sensitivity Speaker-In 0.8 ÷ 20 VRMS Total Power RMS 880 W Minimum load impedance @4Ch: 2Ω @ 3Ch: 2Ω 2Ω 4Ω @ 2Ch: 4Ω Output Power (RMS) @14.4 VDC, 1% THD 4Ch 130 W x 4 (4Ω) 4Ch 220 W x 4 (2Ω) 3Ch 120 W x 2 (4Ω) 480 W x 1 (4Ω) 3Ch 220 W x 2 (2Ω) 440 W x 1 (4Ω) 2Ch 450 W x 2 (4Ω) Adjustable Crossover Yes CEA Specifications Output power @ 4Ω, 1% THD N, 14.4 V Output power @ 4Ω, 1% THD N, 14.4 V: 125 W x 4 Ch SN ratio (ref. 1W output) SN ratio (ref. 1W output): 83 dBA Inputs Input Type Pre-In / Speaker-In Filters Outputs PRE OUT full range (Input A) Filter Pass A Front Ch Filters – Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. Filter Pass B Front Ch Filters – Full Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. Filter Pass C Rear Ch Filters – Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. Filter Pass D Rear Ch Filters – Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct Channel Mono A/B Ch MONO IN (on/off) Yes Inputs/Outputs Sub CH (-20 ÷ 6) dB Inputs/Outputs Bass Boost B Ch (0 ÷12) dB Dimensions Dimension A 264 mm Dimension B 234 mm Dimension C 155 mm Dimension D 135 mm Dimension E 47.5 mm Weight 2.12kg Maximum versatility thanks to the bridging option for each pair of channels. The “All Channels Driven” design philosophy guarantees that the Audison amplifier delivers the rated power on all channels simultaneously. To reach that target, Audison designed the amplifier power supply to handle the cumulative power demand. Audison D-Class technology ADT uses a switching frequency twice as fast as many other modern Class D amplifiers using very high-tolerance component parts to keep the timing correct even during temperature extremes. The higher switching frequency of Audison Class D moves noise much farther away from the audible band. Audison Class D amplifiers also use a steeper 4th-order analog lowpass filter, rather than the simpler 2nd-order lowpass filters usually used in competing designs. The steeper filter will keep noise much lower in amplitude – which is good for controlling EMI and preventing infrasonic noise from getting to the tweeters. It also keeps phase shift outside the audible range. The cost is higher – twice as many components are needed for a 4th-order filter compared to the usual 2nd-order filter, and each output channel needs its own filter – but Audison determined through exhaustive listening testing that this design was the best-sounding approach. Universal Speaker Simulator technology on high-level inputs for maximum compatibility with any type of Head-Unit OEM Source Tech Sheet