{"product_id":"st-npa30dp-2x15w-class-d-audio-amplifier-with-dante®-and-line-mic-inputs-4-8ohm","title":"ST-NPA30DP 2x15W Class D Audio Amplifier  with Dante® and Line\/Mic Inputs (4\/8ohm)","description":"\u003cp\u003e\u003cstrong\u003eThis product is designed as a two-channel amplifier using class D amplifier technology. It can be used for powering low impedance (4Ω\/8Ω) stereo systems with a maximum power of 2x 15 Watts or 1x 30 Watts (Mono). It features Dante® 2-channel digital inputs and outputs, and 2-channel balanced or unbalanced analog inputs and outputs. Analog input supports microphone input as well as 48V phantom power for condenser microphones. This product built-in audio DSP for gain, mixing, matrixing, equalizer, volume and delay control. This amplifier can be controlled via RS-232, TCP\/IP and Web GUI. This product is suitable for a vast range of AV installations.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e☆ Advanced 30W Class-D audio amplifier with Dante integration\u003cbr\u003e\n☆ 2x 15W@4\/8ohm, 1x 30W@4\/8ohm\u003cbr\u003e\n☆ Dante® 2x2 and AES67 audio input\/output supported\u003cbr\u003e\n☆ Balanced\/unbalanced analog input and output for cascading connection\u003cbr\u003e\n☆ Dante® 2CH digital audio, balanced or unbalanced line level analog and AMP outputs\u003cbr\u003e\n☆ Supports microphone input with 48V phantom power\u003cbr\u003e\n☆ Audio DSP processing includes gain, ducking, mixing, matrixing, equalizer, volume and delay control\u003cbr\u003e\n☆ Audio output supports 8 band PEQ adjustment (with +15dB\/-15dB gain), and a maximum of 50ms delay setting\u003cbr\u003e\n☆ Auto standby mode (0~100 minutes can be set) with signal sensing\u003cbr\u003e\n☆ Local 5-12V input trigger for disabling amplifier output\u003cbr\u003e\n☆ Integrated web page function, which can control the local machine and query the working status of the product through the web page\u003cbr\u003e\n☆ Supports network control function, slave devices in the same network segment can be controlled through the set host\u003cbr\u003e\n☆ Dante audio support: 44.1kHz, 48kHz, 88.2kHz, and 96kHz sampling rates @ 16\/24bit\u003cbr\u003e\n☆ Dante audio delay supports settings of 2, 3, 4, 5 or 10ms\u003cbr\u003e\n☆ Flexible control via front panel buttons, RS-232, TCP\/IP and Web GUI\u003cbr\u003e\n☆ Power via PoE or local DC power supply (Amplifier power limited when using PoE)\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e① 1x 2x15W Class D Audio Amplifier\u003cbr\u003e\n② 2x 6pin-3.5mm Phoenix Connector (male)\u003cbr\u003e\n③ 1x 5pin-3.5mm Phoenix Connector (male)\u003cbr\u003e\n④ 1x 4pin-5.08mm Phoenix Connector (male)\u003cbr\u003e\n⑤ 2x Mounting Ear\u003cbr\u003e\n⑥ 4x Machine Screw\u003cbr\u003e\n⑦ 1x 24V\/2A Multinational Power Supply (1.5 meters)\u003cbr\u003e\n⑧ 1x User Manual\u003c\/p\u003e\n\n\u003cstyle\u003e\n  .amp-spec-wrap { width: 100%; font-family: Arial, sans-serif; font-size: 14px; color: #222; }\n  .amp-spec-wrap h2 { font-size: 16px; margin: 28px 0 8px; border-bottom: 2px solid #222; padding-bottom: 4px; text-align: center; }\n  .amp-spec-wrap h3 { font-size: 14px; margin: 18px 0 6px; }\n  .amp-spec-wrap table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }\n  .amp-spec-wrap th { background: #333; color: #fff; text-align: left; padding: 7px 10px; font-size: 13px; }\n  .amp-spec-wrap td { padding: 6px 10px; border: 1px solid #ccc; vertical-align: top; }\n  .amp-spec-wrap tr:nth-child(even) td { background: #f5f5f5; }\n  .amp-spec-wrap .group td { background: #e0e0e0; font-weight: bold; font-size: 13px; }\n  .amp-spec-wrap td:first-child { font-weight: bold; width: 38%; }\n  .amp-spec-wrap img { width: 100%; height: auto; display: block; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"amp-spec-wrap\"\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eDescription\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr class=\"group\"\u003e\u003ctd colspan=\"2\"\u003eAudio\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAmplifier Type\u003c\/td\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e2× 15W @ 4\/8 ohm Stereo; 1× 30W @ 4\/8 ohm Mono\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAudio Format — Dante®\u003c\/td\u003e\n\u003ctd\u003eDante® \/ AES67, PCM 2CH, 44.1K–96kHz, 16\/24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAudio Format — Line In\u003c\/td\u003e\n\u003ctd\u003eAnalog, Balanced\/Unbalanced, Max input level 24 dBu\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAudio Format — Mic In\u003c\/td\u003e\n\u003ctd\u003eAnalog, Balanced\/Unbalanced, Min input level -35 dBV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAudio Format — Line Out\u003c\/td\u003e\n\u003ctd\u003eAnalog, Balanced\/Unbalanced, Max output level 2V RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAudio Format — AMP Out\u003c\/td\u003e\n\u003ctd\u003eAnalog, Balanced 2CH, Max output power 2×15W @ 4\/8 ohm Stereo, 1×30W @ 4\/8 ohm Mono\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.01% at +4 dBu, 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eS\/N Ratio\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 100 dB @ 0 dBu, 1 kHz (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDynamic Range\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 100 dB @ 0 dBu, 1 kHz (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e20 Hz – 20 kHz (±0.5 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Level\u003c\/td\u003e\n\u003ctd\u003eMax 2V RMS (balanced and unbalanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAudio Output Delay\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003ctr class=\"group\"\u003e\u003ctd colspan=\"2\"\u003eInput\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Level — Balanced Line\u003c\/td\u003e\n\u003ctd\u003eMax 24 dBu (12.28 Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Level — Unbalanced Line\u003c\/td\u003e\n\u003ctd\u003eMax 18 dBu (6.14 Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Level — Balanced Mic\u003c\/td\u003e\n\u003ctd\u003eMin -35 dBV (17.78 mVrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e20K Ohm (balanced); 10K Ohm (unbalanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd\u003e600 Ohm (balanced); 300 Ohm (unbalanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003ctr class=\"group\"\u003e\u003ctd colspan=\"2\"\u003eDante® \/ Network\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDante® Audio\u003c\/td\u003e\n\u003ctd\u003e2×2 Dante® and AES67 digital audio input\/output\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDante® Sample Rates\u003c\/td\u003e\n\u003ctd\u003e44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz @ 16\/24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDante® Audio Delay\u003c\/td\u003e\n\u003ctd\u003eConfigurable: 2, 3, 4, 5 or 10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNetwork Bandwidth\u003c\/td\u003e\n\u003ctd\u003e100 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTransmission Distance\u003c\/td\u003e\n\u003ctd\u003e100 m \/ 328 ft (CAT6\/6A\/7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003ctr class=\"group\"\u003e\u003ctd colspan=\"2\"\u003eConnection\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e1× MIC\/LINE IN (6-pin 3.5mm Phoenix connector)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e1× LINE OUT (6-pin 3.5mm Phoenix connector); 1× 4\/8Ω AMP OUT (4-pin 5.08mm locking Phoenix connector)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003e1× RS-232 (3-pin 3.5mm Phoenix connector); 1× TRIGGER (2-pin 3.5mm Phoenix connector); 1× DANTE\/IP (RJ45, PoE+\/PD Class 4 IEEE 802.3at)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003ctr class=\"group\"\u003e\u003ctd colspan=\"2\"\u003eProtection\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESD Protection\u003c\/td\u003e\n\u003ctd\u003e±8 kV (Air-gap discharge), ±4 kV (Contact discharge) — IEC 61000-4-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003ctr class=\"group\"\u003e\u003ctd colspan=\"2\"\u003ePhysical\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eMetal Enclosure — Black\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e180 × 118 × 23 mm (W × D × H)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e713 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003ctr class=\"group\"\u003e\u003ctd colspan=\"2\"\u003ePower\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e(1) 24V\/2A 4-pin Locking Power Supply; (2) PoE+\/PD Class 4 IEEE 802.3at\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Consumption (Max)\u003c\/td\u003e\n\u003ctd\u003e39 W (tested with 1kHz sine wave, AMP output connected to 4Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Power by Source\u003c\/td\u003e\n\u003ctd\u003e24V\/2A DC: 2×15W Stereo \/ 30W Mono; PoE+ Type 2 Class 4: 2×9W Stereo \/ 18W Mono; PoE Class 0: 2×4W Stereo \/ 8W Mono\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003ctr class=\"group\"\u003e\u003ctd colspan=\"2\"\u003eEnvironment\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C – 40°C \/ 32°F – 104°F\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C – 60°C \/ -4°F – 140°F\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e20% – 80% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eStorage Humidity\u003c\/td\u003e\n\u003ctd\u003e10% – 90% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFront Panel\u003c\/h3\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_191659.png?v=1780590303\" alt=\"Front Panel\"\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"width: 8%;\"\u003eNo.\u003c\/th\u003e\n      \u003cth style=\"width: 22%;\"\u003eName\u003c\/th\u003e\n      \u003cth\u003eFunction Description\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e1\u003c\/td\u003e\n      \u003ctd\u003ePower LED\u003c\/td\u003e\n      \u003ctd\u003eGreen ON: system is powered up (PoE or DC). Red ON: system is in standby mode. OFF: system is powered off.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e2\u003c\/td\u003e\n      \u003ctd\u003eID (Show Me) LED\u003c\/td\u003e\n      \u003ctd\u003eIndicates device presence. Flash: device identification active. OFF: no identification. Controlled via Web GUI or API command. When \"DANTE Identification\" is set to ON in the Web GUI System page, this LED flashes to help locate the unit.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e3\u003c\/td\u003e\n      \u003ctd\u003eLINE \/ DANTE LED\u003c\/td\u003e\n      \u003ctd\u003eInput signal source indicators. When the DANTE or LINE IN port detects a signal, the corresponding green DANTE \/ LINE LED will illuminate.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e4\u003c\/td\u003e\n      \u003ctd\u003eLCD Screen\u003c\/td\u003e\n      \u003ctd\u003eDisplays product status information. Using the menu buttons, the user can query the software version or set input gain, DHCP on\/off, and output audio volume.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e5\u003c\/td\u003e\n      \u003ctd\u003eMENU Button\u003c\/td\u003e\n      \u003ctd\u003eUsed to query\/set various functions including input gain adjustment, network settings, output audio volume adjustment, and software version query.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e6\u003c\/td\u003e\n      \u003ctd\u003eUP Button\u003c\/td\u003e\n      \u003ctd\u003ePress to select the previous item.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e7\u003c\/td\u003e\n      \u003ctd\u003eDOWN Button\u003c\/td\u003e\n      \u003ctd\u003ePress to select the next item.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e8\u003c\/td\u003e\n      \u003ctd\u003eENTER Button\u003c\/td\u003e\n      \u003ctd\u003ePress to confirm and execute the selected operation.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRear Panel\u003c\/h3\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_191748.png?v=1780590355\" alt=\"Rear Panel\"\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"width: 8%;\"\u003eNo.\u003c\/th\u003e\n      \u003cth style=\"width: 22%;\"\u003eName\u003c\/th\u003e\n      \u003cth\u003eFunction Description\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e1\u003c\/td\u003e\n      \u003ctd\u003eDANTE Port (PoE)\u003c\/td\u003e\n      \u003ctd\u003eRJ45 Dante® network port supporting PoE. Serves as: (1) Dante® audio input and output port; (2) Web GUI and TCP\/IP control port.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e2\u003c\/td\u003e\n      \u003ctd\u003eRS-232 \/ TRG Port\u003c\/td\u003e\n      \u003ctd\u003eRS-232: Serial control port for RS-232 signal pass-through or API command control. TRG: Trigger signal input port, active on rising and falling edge voltage. When an input trigger is detected, the amplifier enters protected mode (mutes audio). Configurable via the System page of Web GUI.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e3\u003c\/td\u003e\n      \u003ctd\u003e48V Phantom Power LEDs\u003c\/td\u003e\n      \u003ctd\u003eTwo 48V phantom power indicators. Green ON: phantom power on. OFF: phantom power off.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e4\u003c\/td\u003e\n      \u003ctd\u003eMIC\/LINE INPUTS Port\u003c\/td\u003e\n      \u003ctd\u003eLINE: Analog audio input port, balanced\/unbalanced 2CH, max input level 24 dBu. MIC: Analog audio input port, balanced\/unbalanced 2CH, min input level -35 dBV.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e5\u003c\/td\u003e\n      \u003ctd\u003eLINE OUTPUTS Port\u003c\/td\u003e\n      \u003ctd\u003eAnalog audio output port, balanced\/unbalanced 2CH, max output level 2V RMS.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e6\u003c\/td\u003e\n      \u003ctd\u003eAMP OUT Port\u003c\/td\u003e\n      \u003ctd\u003eAnalog audio output port, balanced 2CH, max output power 2×15W @ 4\/8 ohm Stereo or 1×30W @ 4\/8 ohm Mono. 1+\/1- and 2+\/2- for stereo low-impedance speakers. 1+\/1- for mono low-impedance speaker.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e7\u003c\/td\u003e\n      \u003ctd\u003eAMP Output Mode DIP Switch\u003c\/td\u003e\n      \u003ctd\u003eLeft switch — Impedance Select: Toggle up for 4Ω, toggle down for 8Ω. Right switch — Connection Select: Toggle up for stereo dual-channel output, toggle down for bridged mono output.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e8\u003c\/td\u003e\n      \u003ctd\u003eRESET Button\u003c\/td\u003e\n      \u003ctd\u003eShort press: restore factory default settings. Hold 3 seconds: restore factory defaults (excluding network). Hold 10 seconds: restore factory defaults (including network).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e9\u003c\/td\u003e\n      \u003ctd\u003eDC 24V IN\u003c\/td\u003e\n      \u003ctd\u003eDC 24V\/2A power input port.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cstrong\u003eAudio Amplifier Output\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe audio amplifier can output the same power at both 4 ohms and 8 ohms. The amplifier output power varies depending on the input power supply or PoE adapter connected to it, it does this by adjusting the internal gain to allow you to get most of the amplifier. Please ensure that you select the correct impedance option via the speaker impedance selection switch on the rear of the device.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_192837.png?v=1780590543\" alt=\"Audio Amplifier Output\"\u003e\n\n\u003ch3\u003e\u003cstrong\u003eSpeaker Connections\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe audio amplifier only supports Low Impedance (4-8ohm) speakers. It is necessary to configure the Speaker Impedance Switch as well as wire up the speakers according to the specific speakers you are using. Wiring examples for each of the available configurations are as follows:\u003c\/p\u003e\n\u003cp\u003eLow Impedance (4\/8ohm) Stereo Speakers:\u003cbr\u003e\nSpeaker Lo-Z Impedance Select: [0] = 4Ω, [1] = 8Ω\u003cbr\u003e\nSpeaker Lo-Z Connection Select: [0] = STEREO\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_191836.png?v=1780590591\" alt=\"Stereo Speaker Wiring\"\u003e\n\n\u003cp\u003eLow Impedance (4\/8ohm) Mono Speaker:\u003cbr\u003e\nSpeaker Lo-Z Impedance Select: [0] = 4Ω, [1] = 8Ω\u003cbr\u003e\nSpeaker Lo-Z Connection Select: [1] = MONO\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_191901.png?v=1780590622\" alt=\"Mono Speaker Wiring\"\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRS-232 Control Command\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe product also supports RS-232 command control. Connect the RS-232 port of the product to a PC with a 3-pin phoenix connector cable and an RS-232 to USB cable. The connection method is as follows.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_191951.png?v=1780590698\" alt=\"RS-232 Connection\"\u003e\n\n\u003ch2\u003eConnection Diagram\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_192051.png?v=1780590759\" alt=\"Connection Diagram\"\u003e\n\n\u003c\/div\u003e","brand":"staison","offers":[{"title":"Default Title","offer_id":52240857432295,"sku":null,"price":0.0,"currency_code":"SAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8144\/3559\/files\/ST-NPA30DP_front.jpg?v=1782132154","url":"https:\/\/gitcoav.com\/products\/st-npa30dp-2x15w-class-d-audio-amplifier-with-dante%c2%ae-and-line-mic-inputs-4-8ohm","provider":"Greenshore International Trading Company ","version":"1.0","type":"link"}