How much power does the Attessa Streaming Amplifier deliver in stereo mode?
80 W per channel at 8 Ω, and 130 W per channel at 4 Ω when both channels are loaded.
What audio formats and resolutions does BluOS streaming support?
It supports PCM up to 24-bit/192 kHz, including high-resolution file formats such as FLAC, WAV, and AIFF; MQA is also integrated.
How do you control the volume and select the source directly from the device itself?
Using the front-panel dial (Volume/Input Selection Dial): Turning it adjusts the volume; pressing it scrolls through the sources with haptic feedback.
Can it be controlled via an app or external systems?
Yes, you can change settings, update the firmware, and control sources and volume remotely using the MaestroUnite app. An IR remote is included.
What digital and analog connections are available?
Digital: multiple coaxial and optical S/PDIF inputs; Bluetooth (SBC, aptX, AAC). Analog: two line-level RCA inputs, plus an MM phono input with RIAA equalization.
How does the phono input work, and how do you connect a turntable?
MM phono input with RIAA equalizer; cartridges with an output of approximately 3–12 mV can be connected directly, and the ground must be connected via the ground terminal.
Does the Streaming Amplifier support Wi-Fi and LAN?
Yes, there is an RJ-45 LAN port for a wired network connection; Wi-Fi is provided via an included dongle.
Does the amplifier support multiple streaming services and multi-room features?
That's right—BluOS provides access to Amazon Music, Spotify Connect, Tidal, Qobuz, Deezer, internet radio, etc., and can manage up to 64 zones in a multi-room setup.
What happens when headphones are plugged into the front jack?
The speakers are muted when headphones are plugged in; the volume is automatically set to a safe level.
What protection and energy-saving features are built in?
By default, the amplifier enters standby mode after 20 minutes without a signal. When turned on, it sometimes starts at a lower volume if it was turned off at a high volume, to protect the speakers.
