Powersoft tiny PoE Power Over Ethernet AES67/USB Nota amplifier with DSP

[EERecordist]

Powersoft is more in the industrial and commercial world not the audiophile world. No doubt they would be using the same chips as everyone. One use case is the distributed PA system in a hospital with speakers down a passageway. All the wiring to do that is a lot of work. This is the type of product you would put up in the ceiling and forget about for 10 years or more. BiAmp Systems is another company in that space.

They just introduced a very small networked amplifier. Power over Ethernet has several variations in the spec, these cover up to PoE+ which is 30W of power supplied.

The spec is 24bit 48kHz -115dB noise floor but .05% distortion at half power does not sound great. This would be a great product for Madrona to look into and then @amirm could test it!

It is relevant to this discussion: https://www.audiosciencereview.com/...xity-of-setting-up-for-atmos-scare-you.57133/ It might solve some problems in height speaker channels in residential.

NOTA 142

Nota 142 is an ultra compact PoE/PoE+ amplifier designed for networked AoIP applications where space and wiring constraints are a concern.

www.powersoft.com

Powersoft Nota PoE amplifier marketing video

 

[kyuu]

I have to admit to being a little confused. If it's powered by PoE+, which maxes out at about 30W, how are they getting these amplification figures of up to 70W across two channels?

 

[staticV3]

If it's powered by PoE+, which maxes out at about 30W, how are they getting these amplification figures of up to 70W across two channels?

An internal capacitor bank is charged at 30W and can discharge 140W peak.

The crest factor of audio is what makes this possible.

Genelec use the same tech in their Smart IP speakers.

 

[kyuu]

An internal capacitor bank is charged at 30W and can discharge 140W peak.

The crest factor of audio is what makes this possible.

Genelec use the same tech in their Smart IP speakers.

I'd actually considered they might be using capacitors, but it seemed like there wouldn't be room in that tiny enclosure. Definitely not a continuous power rating, then, obviously.