{"product_id":"st-npa70dp-2x35w-class-d-audio-amplifier-with-dante®-and-line-mic-inputs-4-8ohm","title":"ST-NPA70DP  2x35W 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 \u003cbr\u003ebe used for powering low impedance (4Ω\/8Ω) stereo systems with a maximum power of 2x \u003cbr\u003e35 Watts or 1x 70 Watts (Mono). It features Dante® 2-channel digital inputs and outputs, and \u003cbr\u003e2-channel balanced or unbalanced analog inputs and outputs. \u003cbr\u003eAnalog input supports microphone input as well as 48V phantom power for condenser \u003cbr\u003emicrophones. This product built-in audio DSP for gain, mixing, matrixing, equalizer, volume \u003cbr\u003eand delay control. This amplifier can be controlled via RS-232, TCP\/IP and Web GUI. This \u003cbr\u003eproduct is suitable for a vast range of AV installations.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e☆  Advanced 70W Class-D audio amplifier with Dante® integration\u003cbr\u003e☆  2x 35W@4\/8ohm, 1x 70W@4\/8ohm\u003cbr\u003e☆  Dante® 2x2 and AES67 audio input\/output supported\u003cbr\u003e☆  Balanced\/unbalanced analog input and output for cascading connection\u003cbr\u003e☆  Dante® 2CH digital audio, balanced or unbalanced line level analog and AMP outputs\u003cbr\u003e☆  Supports microphone input with 48V phantom power\u003cbr\u003e☆  Audio DSP processing includes gain, ducking, mixing, matrixing, equalizer, volume and \u003cbr\u003e     delay control \u003cbr\u003e☆  Audio output supports 8 band PEQ adjustment (with +15dB\/-15dB gain), and a maximum \u003cbr\u003e     of 50ms delay setting \u003cbr\u003e☆  Auto standby mode (0~100 minutes can be set) with signal sensing\u003cbr\u003e☆  Local 5-12V input trigger for disabling amplifier output\u003cbr\u003e☆  Integrated web page function, which can control the local machine and query the working \u003cbr\u003e     status of the product through the web page\u003cbr\u003e☆  Supports network control function, slave devices in the same network segment can be \u003cbr\u003e     controlled through the set host \u003cbr\u003e☆  Dante audio support: 44.1kHz, 48kHz, 88.2kHz, and 96kHz sampling rates @ 16\/24bit \u003cbr\u003e☆  Dante audio delay supports settings of 2, 3, 4, 5 or 10ms  \u003cbr\u003e☆  Flexible control via front panel buttons, RS-232, TCP\/IP and Web GUI\u003cbr\u003e☆  Power via PoE or local DC power supply (Amplifier power limited when using PoE)\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e① 1x 2x35W Class D Audio Amplifier\u003cbr\u003e② 2x 6pin-3.5mm Phoenix Connector (male) \u003cbr\u003e③ 1x 5pin-3.5mm Phoenix Connector (male) \u003cbr\u003e④ 1x 4pin-5.08mm Phoenix Connector (male)    \u003cbr\u003e⑤ 2x Mounting Ear \u003cbr\u003e⑥ 4x Machine Screw \u003cbr\u003e⑦ 1x 36V\/2.5A Multinational Power Supply (1.5 meters)\u003cbr\u003e⑧ 1x User Manual\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\nbody { font-family: Arial, sans-serif; font-size: 14px; color: #222; max-width: 860px; margin: 0 auto; padding: 20px; }\nh2 { font-size: 16px; margin: 28px 0 8px; border-bottom: 2px solid #222; padding-bottom: 4px; }\nh3 { font-size: 14px; margin: 18px 0 6px; }\ntable { width: 100%; border-collapse: collapse; margin-bottom: 16px; }\nth { background: #333; color: #fff; text-align: left; padding: 7px 10px; font-size: 13px; }\ntd { padding: 6px 10px; border: 1px solid #ccc; vertical-align: top; }\ntr:nth-child(even) td { background: #f5f5f5; }\ntd:first-child { font-weight: bold; width: 38%; }\n.group td { background: #e0e0e0; font-weight: bold; font-size: 13px; }\n\u003c\/style\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"group\"\u003e\n\u003ctd colspan=\"2\"\u003eTechnical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Bandwidth\u003c\/td\u003e\n\u003ctd\u003e100M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Format\u003c\/td\u003e\n\u003ctd\u003eDante® [Dante\/AES67 digital audio in\/out, PCM 2CH 44.1K-96kHz 16\/24Bit]\u003cbr\u003eLINE IN [Analog audio, Balanced\/unbalanced, Max input level 24dBu]\u003cbr\u003eMIC IN [Analog audio, Balanced\/unbalanced, Min input level -35dBV]\u003cbr\u003eLINE OUT [Analog audio, Balanced\/unbalanced, Max output level 2V RMS]\u003cbr\u003eAMP OUT [Analog audio, Balanced 2CH, Max output power 2x35W@4\/8ohm Stereo, 1x70W@4\/8ohm Mono]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e2x35W@4\/8ohm Stereo, 1x70W@4\/8ohm Mono\u003c\/td\u003e\n\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\u003eTransmission Distance\u003c\/td\u003e\n\u003ctd\u003e328ft\/100m (CAT6\/6A\/7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Level\u003c\/td\u003e\n\u003ctd\u003eMax 2V RMS @ balanced audio\u003cbr\u003eMax 2V RMS @ unbalanced audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio THD+N\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.01% at +4dBu, 1KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio S\/N Ratio\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;100dB@0dBu, 1kHzA-weighted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e20Hz to 20kHz (-\/+0.5dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Range\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;100dB@0dBu, 1kHzA-weighted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Level\u003c\/td\u003e\n\u003ctd\u003eMax 24dBu (12.28Vrms) @ balanced line audio\u003cbr\u003eMax 18dBu (6.14Vrms) @ unbalanced line audio\u003cbr\u003eMin -35dBV (17.78mVrms) @ balanced mic audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e20K Ohm balanced\u003cbr\u003e10K Ohm unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd\u003e600 Ohm balanced\u003cbr\u003e300 Ohm unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Output Delay\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Latency\u003c\/td\u003e\n\u003ctd\u003eConfigurable Dante® device latency: (Supports 2, 3, 4, 5 or 10ms configurable using Dante Controller)\u003cbr\u003eConfigurable AMP\/analogue output latency: (0~50ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eESD Protection\u003c\/td\u003e\n\u003ctd\u003eIEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"group\"\u003e\n\u003ctd colspan=\"2\"\u003eConnection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e1x MIC\/LINE IN [6pin-3.5mm phoenix connector]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e1x LINE OUT [6pin-3.5mm phoenix connector]\u003cbr\u003e1x 4\/8Ω AMP OUT [4pin-5.08mm locking phoenix connector]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003e1x RS-232 [3pin-3.5mm phoenix connector, API commands control]\u003cbr\u003e1x TRIGGER [2pin-3.5mm phoenix connector, high\/Low level configurable to disable amp out]\u003cbr\u003e1x DANTE\/IP [RJ45 connector, PoE+\/PD (Class 8 IEEE 802.3bt)] [Dante\/AES67, Web GUI and TCP\/IP]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"group\"\u003e\n\u003ctd colspan=\"2\"\u003eMechanical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eMetal Enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e180mm [W] × 118mm [D] × 28mm [H]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e670g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e(1) 36V\/2.5A 4PIN Locking Power Supply\u003cbr\u003e(2) PoE++ Type 4 Class 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Max)\u003c\/td\u003e\n\u003ctd\u003e94.6W (Test with 1k sine wave, audio amplifier output is connected to 4Ω resistance)\u003c\/td\u003e\n\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% (relative humidity, non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Humidity\u003c\/td\u003e\n\u003ctd\u003e10%~90% (relative humidity, non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"text-align: center;\"\u003eOperation Controls and Functions\u003c\/h2\u003e\n\u003ch3\u003eFront Panel\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_194914.png?v=1780592458\"\u003e\u003c\/p\u003e\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: The system is powered up (PoE or DC power supply).\u003cbr\u003eRed ON: The system is in standby mode.\u003cbr\u003eOFF: The 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\u003eThis LED indicates the presence of the product.\u003cbr\u003eFlash: Device identification\u003cbr\u003eOFF: No device identification\u003cbr\u003eIt can be controlled through Web GUI or API command. For example, when selecting the \"On\" option for \"DANTE Identification\" on the System page of the Web GUI, the ID (show me) LED on the front panel will flash, so that you can find the corresponding machine in the system.\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 signal input, the corresponding green DANTE\/LINE LED will be on.\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\u003eThe LCD screen displays the status information of the product. With menu buttons operation, the user can query the software version, or set the input gain, DHCP on\/off, 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 function of the product, including input gain adjustment, network setting, output audio volume adjustment, 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 the UP button 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 the DOWN button 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 the ENTER button to confirm and execute the operation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eRear Panel\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_195002.png?v=1780592547\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable style=\"width: 100.057%; height: 939.103px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 18.1979px;\"\u003e\n\u003cth style=\"width: 8%; height: 18.1979px;\"\u003eNo.\u003c\/th\u003e\n\u003cth style=\"width: 22%; height: 18.1979px;\"\u003eName\u003c\/th\u003e\n\u003cth style=\"width: 36.3997%; height: 18.1979px;\"\u003eFunction Description\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 78.375px;\"\u003e\n\u003ctd style=\"width: 8%; height: 78.375px;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 78.375px;\"\u003eDANTE port\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 78.375px;\"\u003eDante® network port, supporting PoE, with the following two functions:\u003cbr\u003e(1) Dante® audio input and output port.\u003cbr\u003e(2) Web GUI and TCP\/IP control port.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 176.344px;\"\u003e\n\u003ctd style=\"width: 8%; height: 176.344px;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 176.344px;\"\u003eRS-232 \/ TRG Port\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 176.344px;\"\u003eRS-232: Serial control port, used for RS-232 signal pass-through or controlling this product via API commands.\u003cbr\u003eTRG: Trigger signal input port, effective at rising edge voltage and falling edge voltage. When the input trigger is detected, the amplifier will enter the protected mode (mute the audio). For details, please refer to the input trigger settings on the System page of Web GUI.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"width: 8%; height: 58.7812px;\"\u003e3\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 58.7812px;\"\u003e48V Phantom Power LEDs\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 58.7812px;\"\u003eTwo 48V Phantom power indicators.\u003cbr\u003eGreen ON: Phantom power on.\u003cbr\u003eOFF: Phantom power off.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 117.562px;\"\u003e\n\u003ctd style=\"width: 8%; height: 117.562px;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 117.562px;\"\u003eMIC\/LINE INPUTS Port\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 117.562px;\"\u003eLINE analogue audio input port, supporting balanced\/unbalanced 2CH, with a Max input level of 24dBu.\u003cbr\u003eMIC analogue audio input port, supporting balanced\/unbalanced 2CH, with a Min input level of -35dBV.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"width: 8%; height: 58.7812px;\"\u003e5\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 58.7812px;\"\u003eLINE OUTPUTS Port\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 58.7812px;\"\u003eLINE analogue audio output port, supporting balanced\/unbalanced 2CH, with a Max output level of 2V RMS.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 156.75px;\"\u003e\n\u003ctd style=\"width: 8%; height: 156.75px;\"\u003e6\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 156.75px;\"\u003eAMP OUT Port\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 156.75px;\"\u003eAnalogue audio output port, supporting balanced 2CH, with Max output power 2x35W@4\/8ohm Stereo, 1x70W@4\/8ohm Mono.\u003cbr\u003e1+\/1- and 2+\/2- are for Low Impedance (4\/8ohm) Stereo Speakers.\u003cbr\u003e1+\/1- is for Low Impedance (4\/8ohm) Mono Speaker.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 117.562px;\"\u003e\n\u003ctd style=\"width: 8%; height: 117.562px;\"\u003e7\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 117.562px;\"\u003eAMP Output Mode DIP Switch\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 117.562px;\"\u003eSpeaker Lo-Z Impedance Select: Toggle up the left switch to connect the 4Ω speaker, or toggle down the left switch to connect the 8Ω speaker.\u003cbr\u003eSpeaker Lo-Z Connection Select: Toggle up the right switch for stereo dual channel output, or toggle down for bridged mono output.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 137.156px;\"\u003e\n\u003ctd style=\"width: 8%; height: 137.156px;\"\u003e8\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 137.156px;\"\u003eRESET Button\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 137.156px;\"\u003eShort press this button to reset the product.\u003cbr\u003ePress and hold this button for 3 seconds to restore to factory default settings (excluding the network).\u003cbr\u003ePress and hold this button for 10 seconds to restore to factory default settings (including the network).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 8%; height: 19.5938px;\"\u003e9\u003c\/td\u003e\n\u003ctd style=\"width: 22%; height: 19.5938px;\"\u003eDC 36V IN\u003c\/td\u003e\n\u003ctd style=\"width: 36.3997%; height: 19.5938px;\"\u003eDC 36V\/2.5A power input port.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\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 \u003cbr\u003eoutput power varies depending on the input power supply or PoE adapter connected to it, \u003cbr\u003eit does this by adjusting the internal gain to allow you to get most of the amplifier. Please \u003cbr\u003eensure that you select the correct impedance option via the speaker impedance selection \u003cbr\u003eswitch on the rear of the device.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_195033.png?v=1780592620\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpeaker Connections\u003cbr\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe audio amplifier only supports Low Impedance (4-8ohm) speakers. It is necessary to \u003cbr\u003econfigure the Speaker Impedance Switch as well as wire up the speakers according to the \u003cbr\u003especific speakers you are using. Wiring examples for each of the available configurations \u003cbr\u003eare as follows:\u003cbr\u003eLow Impedance (4\/8ohm) Stereo Speakers:\u003cbr\u003eSpeaker Lo-Z Impedance Select: [0] = 4Ω, [1] = 8Ω\u003cbr\u003eSpeaker Lo-Z Connection Select: [0] = STEREO\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_195111.png?v=1780592668\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eLow Impedance (4\/8ohm) Mono Speaker:\u003cbr\u003eSpeaker Lo-Z Impedance Select: [0] = 4Ω, [1] = 8Ω\u003cbr\u003eSpeaker Lo-Z Connection Select: [1] = MONO\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_195136.png?v=1780592693\" alt=\"\"\u003e\u003c\/p\u003e\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 \u003cbr\u003eto a PC with a 3-pin phoenix connector cable and an RS-232 to USB cable. The connection \u003cbr\u003emethod is as follows.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_195212.png?v=1780592741\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eConnection Diagram\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/Screenshot_2026-06-04_195314.png?v=1780592784\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"STAISON","offers":[{"title":"Default Title","offer_id":47998630887645,"sku":null,"price":0.0,"currency_code":"SAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0802\/0410\/3901\/files\/IMG1308.jpg?v=1780592830","url":"https:\/\/www.staison.com\/products\/st-npa70dp-2x35w-class-d-audio-amplifier-with-dante%c2%ae-and-line-mic-inputs-4-8ohm","provider":"STAISON","version":"1.0","type":"link"}