AGD Audion MK3: Gorgeous Class D GaNFET amps...& the sound?

Class D amplifiers never really reached the heart of audiophiles until recently. Among the new projects, AGD has designed gorgeous machines based on the cutting edge technologu offered by Gallium nitride MOSFETs, also known as GaNFET. The results? Discover them in this video!

SPECS (MK III):
Maximum Output Power at 0.1% THD+N, 1KHz, 4Ω: 200W
THD+N 10W/1KHz: less than 0.005%
Output Power at 0.01% THD+N, 20Hz÷20KHz, 8Ω: 100W
Bandwidth ±0.5db: 0Hz÷50KHz
Input Impedance: 40kohm (600ohm upon request)
Efficiency%: more than 94%
Noise Floor (100mVRMS XLR Input): -140db
GaNTubeKT88 MkIII PWM Frequency: 800kHz std.
Dimension: 7.5×5.5×7.5
Weight: 5lbs (2.5kg)
Input Voltage: 110-240V (user selectable)

LINKS:

INDEX:
0:00 - Intro
2:42 - The story
5:46 - Physical features
8:12 - The technology
11:07 - Dedicated GaNFET
13:30 - Further features
14:59 - Sound test
16:09 - Pros & Cons
20:24 - Sonics & comparisons

More Ana[dia]log groove:

#ganfet #agdaudion #classdamplifier

[Roudaki]

I met Alberto years ago at Axpona and we spoke at length, at the time I also was designing telecom equipment using GAN FETs and Alberto truly knows what he is doing. I also love the Audions.
Now, you mentioned the VFET, I own almost all of Sony’s VFET amps as well as few other hidden Sony Gems that are a lot easier to repair, mainly the TA-3200 when paired directly with the TAE-2244 (supplements the low end frequencies of the 3200).
Another absolute great Sony power amp is the TAN-86 when used in Class A. It rivals my pass power amps as well as most of of my Firstwatt models (I own 6 of them)

[ramlord]

Dear Guido, thank you for presenting the technology by Alberto. I am looking into the advances of Class D for a while now and AGD is definitively one of the most interesting out there. Especially the AGD Duet monos are on my list.
Also glad that you use your familiar Baby-terminology a bit more again
🔥🐹🔥

[sloboat]

You are the first hifi ytr to use the word "sculpt ", to describe tube sound. I like it. This review was very enjoyable and entertaining.

[psyphonyxaudio]

I subscribed just because you are featuring GanFet =)
I own the Orchard Audio Premium Mono blocks .. Im excited to see how much further this tech will go ..and cheaper =)
AGD are next level too .. I know Jay Lee has them .. I've been there to hear his amps. Wonderful stuff.

[User_not_found_]

...I've wanted these for a long time...but they are a luxury. I ended with a lower cost integrated and was happy until I watched your review. thanks alot for giving me FOMO Guido. nice job.

[Pksparty]

And archaeologists and an audiophile. Digging into the high end class D world. What a life!

[alvarocoutinho]

Thanks for another interesting video. 🤙🏻

[regisvoiclair]

Thanks!
Did you hear the AGD Duet and how is the sound compared to AGD Audion MK3 ?

[PhilipvanderMatten]

The apple part made me laugh out loud!

[AllboroLCD]

Looks, performance, modern tech and a decent value? Yes, sold 100%. Love to hear these up against a Starkrimson

[MarkoVlasicAudio]

can you do comparison with cheap Fosi Audio ZA3 mono blocks?

[TM-fxpi]

Great video. Very informative. Thank you.

[YukonXL]

Great Video and channel! I am in process of upgrading my office system which I use for both headphone use and 2 channel stereo. Do you think using a tube headphone amp which also has pre-amp functionalities would pair well with these? I am looking at something like the Feliks Audio Envy or the Woo Audio WA23 Luna. I still need to hear the AGD mono blocks at a local dealer but am very intrigued by this potential set-up. The rest of my system for reference is Chord Hugo TT2 for the DAC and Paradigm Persona B speakers. Thanks for your time.

[CatFoodDraino]

Altec Model 19's....very very nice

[fedrichorlandineumann]

Veramente interessante Guido, peccato per il prezzo al Milano hifi una bella impressione da technics class d e da un'altro italiano che dovresti provare, esoteric pro ! Un saluto

[Fane]

Nice job!
What preamplifier did you use? The Shindo, the Spectra or I see there t+A!
I would love a detailed system rundown

[masterazlan]

Old skol D stuff...I knew bout it 3yrs back...Peace!

[cudfoocudfoo]

Turning off a preamp blows up an Amp. That's unheard of and completely insane!

[net_news]

Hey Guido, is there a way to buy a pair of these ones here in Europe instead of importing them from the US (avoiding customs, shipping and all that stuff)?

[wallyallgood]

when turning your system ON, do you recommend turning the amp off first then the phone stage?
what about when turning them OFF?