Features & Applications
Features
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Applications
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Detailed Description NOTA 142
NOTA 142 is an ultra-compact, two-channel amplifier in the Powersoft Pocket Size range, designed for networked audio installations where space and wiring are limited. Power and network audio share the Ethernet connection through PoE or PoE+, removing the need for a separate local mains supply. The amplifier is rated at 140 W total at 4 Ω, with output capabilities dependent on the power source and loading conditions.
Native AES67 connectivity allows audio to be received from a compatible network. USB-C audio and USB-to-AES67 bridging extend the connection options for computer-based sources and conferencing systems. ArmoníaPlus supports setup and configuration, while third-party integration is available through an API.
Onboard signal processing includes parametric IIR equalization, crossover filters, input and output delay, and RMS voltage / peak limiters. The Auto Setup function measures the connected loudspeaker impedance and configures a suitable high-pass filter. Power Sharing accommodates unequal channel demands within the manufacturer’s published limits for each loudspeaker impedance.
The small, lightweight enclosure makes the amplifier suitable for installation close to the loudspeaker or behind equipment, including retrofit projects. Manufacturer applications include commercial audio, conferencing and distributed systems. Combined with a VERSO gateway, NOTA supports cloud-based system monitoring. The output table distinguishes PoE from PoE+ and symmetrical from asymmetrical loading; its maximum output figures should not be interpreted as a continuous total available from the PoE input.
Manufacturer documents: NOTA 142 Datasheet · Pocket Size User Guide
Technical Specifications NOTA 142
Amplifier |
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|---|---|
| TYPE | 2-channel ultra-compact Class D amplifier with DSP; PoE / PoE+ powered |
| RATED POWER AT 4 Ω | 140 W total as published; available output depends on PoE class, load and signal conditions |
| SYMMETRICAL MAXIMUM POWER / CHANNEL, 16 Ω | PoE+: 35 W; PoE: 30 W |
| SYMMETRICAL MAXIMUM POWER / CHANNEL, 8 Ω | PoE+: 50 W; PoE: 35 W |
| SYMMETRICAL MAXIMUM POWER / CHANNEL, 4 Ω | PoE+: 70 W; PoE: 50 W |
| SYMMETRICAL MAXIMUM POWER / CHANNEL, 2 Ω | PoE+: 50 W; PoE: 35 W |
| ASYMMETRICAL MAXIMUM POWER / CHANNEL, 16 Ω | PoE+: 40 W; PoE: 35 W |
| ASYMMETRICAL MAXIMUM POWER / CHANNEL, 8 Ω | PoE+: 70 W; PoE: 50 W |
| ASYMMETRICAL MAXIMUM POWER / CHANNEL, 4 Ω | PoE+: 110 W; PoE: 75 W |
| ASYMMETRICAL MAXIMUM POWER / CHANNEL, 2 Ω | PoE+: 80 W; PoE: 55 W |
| POWER MEASUREMENT CONDITIONS | Symmetrical: all channels driven. Asymmetrical: maximum sharing per channel. These output figures are not a continuous total available from a PoE power source. |
Audio and DSP |
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| FREQUENCY RESPONSE | 10 Hz–22 kHz |
| THD+N | <0.05%, to half power |
| D/A CONVERTER | 24-bit / 48 kHz; 115 dB(A) dynamic range |
| INTERNAL PRECISION | 32-bit floating point |
| LATENCY | <10 ms |
| INPUT DELAY | 0–100 ms |
| OUTPUT DELAY | 0–10 ms |
| EQUALIZATION | Parametric IIR: peaking, shelving, all-pass, band-pass, band-stop, high-pass and low-pass |
| CROSSOVERS | Butterworth, Linkwitz–Riley and Bessel IIR, 6–48 dB/oct |
| LIMITERS | RMS voltage and peak |
| AUTO SETUP | Measures loudspeaker impedance and configures a suitable high-pass filter |
Connections and control |
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| NETWORK AUDIO | AES67 |
| USB | USB-C audio input and USB-to-AES67 bridging functions |
| CONTROL | ArmoníaPlus; third-party API integration |
| CLOUD MONITORING | Through a compatible VERSO gateway, as described by Powersoft |
Power supply and environment |
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| POWER SOURCE | PoE / PoE+ |
| OPERATING VOLTAGE | 44–57 V (datasheet endpoints) |
| MAXIMUM CONTINUOUS CURRENT | 600 mA |
| EFFICIENCY | ≥75% |
| OPERATING TEMPERATURE | 0–35°C |
| RELATIVE HUMIDITY | Up to 90%, non-condensing |
| IP RATING | IP40 |
Construction |
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| DIMENSIONS, PUBLISHED VALUES | 115 × 25.4 × 31.4 mm |
| WEIGHT | 198 g |
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