AGD Allegro Integrated All-in-One Looks Promising

AGD’s Allegro combines amplification, digital conversion, streaming, phono, and headphone amplification in a single 11×11×4-inch chassis.

Moreover, the California-based company boasts:

Allegro was not created simply to make high-end audio more convenient. It was created to answer a more ambitious question: can a single component deliver the emotional immediacy, speed, control, and musical realism normally associated with a carefully assembled reference system? For AGD, the answer is yes.

While a lofty claim, there does seem to be a lot to like looking at the specs.

Firstly, Allegro has been built on AGD’s proprietary Gallium Nitride (GaN) power-stage tech, as we enjoyed in the mono amps we reviewed.

This, in the Allegro, is claimed to put out 200 watts per channel into 4 ohms. An 8-ohm figure would also be useful, but is not mentioned.

Digital to analogue conversion is said to be conducted by a discrete R-2R DAC for “natural and precise digital reproduction,” while network streaming is compatible with “leading platforms and is Audirvāna certified.”

If you prefer your sources analogue, AGD’s new Allegro offers a fully balanced MM/MC phono stage for vinylistas. The analogue preamplifier stage also features line-level and balanced XLR inputs.

Meanwhile, a fully balanced Class A headphone amplifier is on hand for late-night listening sessions.

AGD highlights Allegro’s fully isolated digital architecture, designed to preserve signal integrity across all sources. The high-speed switching power supply, optimised with GaN MOSFETs, promises high efficiency and a fast dynamic response, delivering 4 kW peak power for 100 ms to handle demanding musical transients with authority and ease, according to the manufacturer.

The company also states the entire system is housed in a precision-machined aluminium chassis engineered for thermal stability, structural integrity, and long-term performance consistency.

Beyond the inputs and outputs mentioned, we cannot find a full list or even confirm which digital in/out options are available, what the speaker terminals accept, or whether the Allegro supports Bluetooth. Indeed, we cannot, at this time, state if it is compatible with any of the ‘Connected’ streaming services. Likewise, we're not sure if this arrives via Ethernet and/or Wi-Fi.

However, Alberto Guerra, Founder and Chief Designer of AGD Productions, says:

With Allegro, our goal was to eliminate complexity while preserving absolute performance. We wanted to create a system that delivers the purity, speed, and musical truth of our reference amplifiers, while integrating the essential elements of a complete high-end system into a single component.

The AGD Allegro is available at an MSRP of US$14,999, with pricing to be confirmed elsewhere.

For more information visit AGD Productions