91%

AGD Production AGD Tempo di GaN variant 1

AGD Production AGD Tempo di GaN variant 2

AGD Production AGD Tempo di GaN variant 3

AGD Production AGD Tempo di GaN variant 4

AGD Production AGD Tempo di GaN variant 5

AGD Production AGD Tempo di GaN

Name: AGD Production AGD Tempo di GaN
Brand: AGD Production
SKU: agd-tempo
Rating: 4.6 (8 reviews)

View at AGD Production

Design Philosophy

The AGD “TEMPO” Stereo Amplifier is the new addition to our state-of-the-art Hi-End Power Amplifiers family. TEMPO is our first compact Stereo Amplifier utilizing the same unique technology of Gallium Nitride Power-Stage design already in use with all its Hi-End AGD siblings.

The AGD “TEMPO” is rated 200+200W 4Ohm (100W+100W 8Ohm)

To achieve these performances in such compact CNC machined cabinet, we have designed a new GaN- based output power stage with a new mother board that contains the low noise power supply and all the analog buffer stages, small enough to enable these outstanding minimalistic footprint.

As for all AGD amps, the GaN-based power stage module utilized in the AGD TEMPO is fully upgradable to next generation modules using future generation of GaN devices with improved technology so to maintain the full value of the product in time.

The AGD TEMPO Stereo Amplifier uses the same fundamental technology pioneered with the AGD Vivace, the first Hi-End amplifier based on Gallium Nitride power MOSFET, the AGD THE AUDION, and The AGD GRAN VIVACE.

Moreover, the new integrated GaN-Sound module design can operate also in bridge mode delivering in this configuration twice the nominal stereo output power, so about 400W on 4ohm, with a maximum peak current capability of 30A.

The NEW GaN-Power output stage can efficiently switch at much higher slew rates than any silicon-based counterparts and can deliver the most sublime sound thanks to their ideal “by the book” oscillations-free switching capabilities.

The New AGD GaN-Power Module

Thanks to a world-class PCB design, a refined selection of top-quality audio grade components, and the extremely efficient GaN-based power stage we achieved the design’s goal to operate this integrated Stereo Version of at ~800kHz as standard PWM frequency.

This operational frequency of the PWM controller is the same one used with the GanTube88KT and GaNTube120KT.

The higher PWM frequency operation delivers a direct and positive impact on the overall outstanding sonic and musical performances with sublime mid-high range realism along with the unique tight and controlled bass register.

Hence, the TEMPO maintains the same distinctive tonality that charactarizes all our designs, The Audion the Vivace and the top of the line the Gran Vivace.

The New AGD TEMPO Cabinet

Front

Single billet CNC-machined cabinet delivers the best solidity and compactness for audiophiles that are looking to get the superior sound with the most advanced technology on the market today and to “down-size” the footprint of regular amps at the same time.
Available in SilverBlack and mirror-polished finishing (the latter custom order only).

Back

The AGD “TEMPO” back panel configuration is perfectly symmetrical and offers easy access to both the single ended and Balanced inputs connectors. The inputs (completely independent) are selectable via toggle switch.
A stereo-bridge switch enables the operation of the Stereo amplifier in bridge mode as 400W monoblock power stage (input signal via the right channel).
Two sets of super rugged solid copper binding posts, specially designed by AGD, and the connections for remote trigger input and output complete the back panel configuration.

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Overall Score 91/100

Deliciously Crispy

AGD Tempo di GaN — Compact GaN Power with Class-A Character

The AGD Tempo di GaN condenses Class‑A‑like clarity and extraordinary drive into a compact, highly efficient stereo amplifier. Using AGD's proprietary ultra-high-frequency switching (~800 kHz) and a robust power supply, the Tempo delivers 200+200W into 4 Ω (bridgeable to 400W) with low measured distortion and wide bandwidth. Reviewers praised its headroom, dynamic punch and expansive imaging, noting midrange texture and vocal presence that approach SET/Class‑A transparency. The chassis is meticulously finished and arrives with premium accessories, reflecting careful engineering and presentation. Ideal for listeners who want tube-like linearity, high efficiency (>94%), and the ability to drive demanding speakers, the Tempo stands out as an exceptional value in its price band — as observed by Michael Zisserson at Future Audiophile.

Future Audiophile

"This is one stable and linear amp that really does sound like a Class-A or SET tube amp."

Pros

Class‑A‑like linearity and midrange texture that preserves vocal detail and timbral nuance, delivering a transparent, tube-like midband.
Exceptional dynamics, headroom and speaker control — 200+200W into 4 Ω and bridgeable to 400W, able to drive demanding loudspeakers with authority.
Very high efficiency (>94%) and a robust power supply yield low heat, strong measured performance and excellent real‑world efficiency.

Cons

For truly extreme power needs or very high-SPL systems, a second Tempo (bridged or bi‑amp) may be required to reach the highest headroom levels.
AGD Productions is a relatively new, mostly direct‑to‑customer brand, which may concern buyers who prefer long-established distribution and service networks.
The amp’s slightly laid‑back, linear signature (SET/Class‑A leaning) may not suit listeners who prefer a more forward or visceral tonal presentation.

Sound Quality

91/100

Dynamics

92/100

As a GaN-based Class-D design delivering 200 W/ch into 4 ohms (bridgeable to 400 W), reviewers repeatedly praised the Tempo's headroom, current delivery and speaker control: "can basically drive damn-near any speaker...with ample headroom" and "precision and seamlessness...hair-raising." The amp's high efficiency (>94%), robust power supply and reported measured specs that "rival the best...Class-A" support a very strong dynamics score relative to its power class.

Soundstage Imaging

90/100

The review highlights expansive, immersive imaging: the music "flings the music into the room, completely engulfing the listener" and individual instruments/artists are clearly placed, creating a "breathtaking soundscape." That faithful spatial retrieval even while driving real-world speakers indicates excellent channel separation and imaging stability for a solid-state GaN amplifier.

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Build Quality

90/100

AGD's industrial design and attention to detail are praised (arrives in a Pelican case with high-end accessories), and the reviewer specifically calls the power supply "as robust as designer Alberto Guerra could find." The compact, well-finished chassis and thoughtful packaging point to very good construction and thermal/power-supply implementation for a high-efficiency Class-D amp.

Value for Money

95/100

The reviewer calls the Tempo a "totally game-changing event in the audiophile world" at its stated price (~$5,500), explicitly comparing its measured performance and subjective sound to far more expensive Class-A designs. Given the unit's rated 200 W/ch into 4 ohms (bridgeable to 400 W), >94% efficiency and sound quality that rivals costlier rivals, reviewers present a strong, explicit value case — exceptional performance for the money in its segment.