ST-NPA30DP 2x15W Class D Audio Amplifier with Dante® and Line/Mic Inputs (4/8ohm)
ST-NPA30DP 2x15W Class D Audio Amplifier with Dante® and Line/Mic Inputs (4/8ohm)
This 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.
Features
☆ Advanced 30W Class-D audio amplifier with Dante integration
☆ 2x 15W@4/8ohm, 1x 30W@4/8ohm
☆ Dante® 2x2 and AES67 audio input/output supported
☆ Balanced/unbalanced analog input and output for cascading connection
☆ Dante® 2CH digital audio, balanced or unbalanced line level analog and AMP outputs
☆ Supports microphone input with 48V phantom power
☆ Audio DSP processing includes gain, ducking, mixing, matrixing, equalizer, volume and
delay control
☆ Audio output supports 8 band PEQ adjustment (with +15dB/-15dB gain), and a maximum
of 50ms delay setting
☆ Auto standby mode (0~100 minutes can be set) with signal sensing
☆ Local 5-12V input trigger for disabling amplifier output
☆ Integrated web page function, which can control the local machine and query the working
status of the product through the web page
☆ Supports network control function, slave devices in the same network segment can be
controlled through the set host
☆ Dante audio support: 44.1kHz, 48kHz, 88.2kHz, and 96kHz sampling rates @ 16/24bit
☆ Dante audio delay supports settings of 2, 3, 4, 5 or 10ms
☆ Flexible control via front panel buttons, RS-232, TCP/IP and Web GUI
☆ Power via PoE or local DC power supply (Amplifier power limited when using PoE)
Package Contents
① 1x 2x15W Class D Audio Amplifier
② 2x 6pin-3.5mm Phoenix Connector (male)
③ 1x 5pin-3.5mm Phoenix Connector (male)
④ 1x 4pin-5.08mm Phoenix Connector (male)
⑤ 2x Mounting Ear
⑥ 4x Machine Screw
⑦ 1x 24V/2A Multinational Power Supply (1.5 meters)
⑧ 1x User Manual
Specifications
| Parameter | Description |
|---|---|
| Audio | |
| Amplifier Type | Class D |
| Output Power | 2× 15W @ 4/8 ohm Stereo; 1× 30W @ 4/8 ohm Mono |
| Audio Format — Dante® | Dante® / AES67, PCM 2CH, 44.1K–96kHz, 16/24-bit |
| Audio Format — Line In | Analog, Balanced/Unbalanced, Max input level 24 dBu |
| Audio Format — Mic In | Analog, Balanced/Unbalanced, Min input level -35 dBV |
| Audio Format — Line Out | Analog, Balanced/Unbalanced, Max output level 2V RMS |
| Audio Format — AMP Out | Analog, Balanced 2CH, Max output power 2×15W @ 4/8 ohm Stereo, 1×30W @ 4/8 ohm Mono |
| THD+N | < 0.01% at +4 dBu, 1 kHz |
| S/N Ratio | > 100 dB @ 0 dBu, 1 kHz (A-weighted) |
| Dynamic Range | > 100 dB @ 0 dBu, 1 kHz (A-weighted) |
| Frequency Response | 20 Hz – 20 kHz (±0.5 dB) |
| Output Level | Max 2V RMS (balanced and unbalanced) |
| Audio Output Delay | < 1 ms |
| Input | |
| Input Level — Balanced Line | Max 24 dBu (12.28 Vrms) |
| Input Level — Unbalanced Line | Max 18 dBu (6.14 Vrms) |
| Input Level — Balanced Mic | Min -35 dBV (17.78 mVrms) |
| Input Impedance | 20K Ohm (balanced); 10K Ohm (unbalanced) |
| Output Impedance | 600 Ohm (balanced); 300 Ohm (unbalanced) |
| Dante® / Network | |
| Dante® Audio | 2×2 Dante® and AES67 digital audio input/output |
| Dante® Sample Rates | 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz @ 16/24-bit |
| Dante® Audio Delay | Configurable: 2, 3, 4, 5 or 10 ms |
| Network Bandwidth | 100 Mbps |
| Transmission Distance | 100 m / 328 ft (CAT6/6A/7) |
| Connection | |
| Input | 1× MIC/LINE IN (6-pin 3.5mm Phoenix connector) |
| Output | 1× LINE OUT (6-pin 3.5mm Phoenix connector); 1× 4/8Ω AMP OUT (4-pin 5.08mm locking Phoenix connector) |
| Control | 1× 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) |
| Protection | |
| ESD Protection | ±8 kV (Air-gap discharge), ±4 kV (Contact discharge) — IEC 61000-4-2 |
| Physical | |
| Housing | Metal Enclosure — Black |
| Dimensions | 180 × 118 × 23 mm (W × D × H) |
| Weight | 713 g |
| Power | |
| Power Supply | (1) 24V/2A 4-pin Locking Power Supply; (2) PoE+/PD Class 4 IEEE 802.3at |
| Power Consumption (Max) | 39 W (tested with 1kHz sine wave, AMP output connected to 4Ω) |
| Output Power by Source | 24V/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 |
| Environment | |
| Operating Temperature | 0°C – 40°C / 32°F – 104°F |
| Storage Temperature | -20°C – 60°C / -4°F – 140°F |
| Operating Humidity | 20% – 80% RH (non-condensing) |
| Storage Humidity | 10% – 90% RH (non-condensing) |
Front Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED | Green ON: system is powered up (PoE or DC). Red ON: system is in standby mode. OFF: system is powered off. |
| 2 | ID (Show Me) LED | Indicates 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. |
| 3 | LINE / DANTE LED | Input signal source indicators. When the DANTE or LINE IN port detects a signal, the corresponding green DANTE / LINE LED will illuminate. |
| 4 | LCD Screen | Displays 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. |
| 5 | MENU Button | Used to query/set various functions including input gain adjustment, network settings, output audio volume adjustment, and software version query. |
| 6 | UP Button | Press to select the previous item. |
| 7 | DOWN Button | Press to select the next item. |
| 8 | ENTER Button | Press to confirm and execute the selected operation. |
Rear Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | DANTE Port (PoE) | RJ45 Dante® network port supporting PoE. Serves as: (1) Dante® audio input and output port; (2) Web GUI and TCP/IP control port. |
| 2 | RS-232 / TRG Port | RS-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. |
| 3 | 48V Phantom Power LEDs | Two 48V phantom power indicators. Green ON: phantom power on. OFF: phantom power off. |
| 4 | MIC/LINE INPUTS Port | LINE: 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. |
| 5 | LINE OUTPUTS Port | Analog audio output port, balanced/unbalanced 2CH, max output level 2V RMS. |
| 6 | AMP OUT Port | Analog 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. |
| 7 | AMP Output Mode DIP Switch | Left 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. |
| 8 | RESET Button | Short press: restore factory default settings. Hold 3 seconds: restore factory defaults (excluding network). Hold 10 seconds: restore factory defaults (including network). |
| 9 | DC 24V IN | DC 24V/2A power input port. |
Audio Amplifier Output
The 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.
Speaker Connections
The 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:
Low Impedance (4/8ohm) Stereo Speakers:
Speaker Lo-Z Impedance Select: [0] = 4Ω, [1] = 8Ω
Speaker Lo-Z Connection Select: [0] = STEREO
Low Impedance (4/8ohm) Mono Speaker:
Speaker Lo-Z Impedance Select: [0] = 4Ω, [1] = 8Ω
Speaker Lo-Z Connection Select: [1] = MONO
RS-232 Control Command
The 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.
Connection Diagram
Product features
Product features
Materials and care
Materials and care
Merchandising tips
Merchandising tips
