Audiophilepure

https://www.stereophile.com/content/gryphon-audio-designs-diablo-333-integrated-amplifier

I was not ready for how truly excellent the Gryphon Audio Designs Diablo 333 integrated amplifier was going to be—what a fine world-class music maker it is. This is the first amp I have had in-house in some time that makes me question my marriage vows to my reference system. The Diablo 333 can power anything, while producing amazing lifelike dynamics, the blackest blacks, and the brightest colors.

The sheer amount of musical energy conveyed, and the detailed truth of that—you need to hear it for yourself. I could trade four boxes for one, and I am all about downsizing these days. For now, reviewing hardware as I do, I need to keep the flexibility of separate components. Is it as good as separates? Yes—it is. The Gryphon Diablo 333 is guarding its treasures, waiting to reveal them just to you.

https://www.audiophilia.com/reviews/2025/2/1/margules-i-240-tube-integrated-amplifier

I’ve always lived in the north of Mexico, except for a brief period when I lived in Guadalajara (in the state of Jalisco); that was a long time ago, and it was during my stay that I got to listen for the first time to the Margules brand. Since Margules appeared in the late 1920s, they’ve made a mark. They appear at the most well-known audio expos (especially in the US) and always seem to surprise and leave the public in awe with their gear (a quick search for reviews of their products will suffice). Their designs seem very nature-based, with woods, curved lines, and dark metals that are quite unassuming—their minimalist colour selection captures the eye.

https://www.audiophilia.com/reviews/2025/2/1/margules-i-240-tube-integrated-amplifier

There are certain things about the I-240 that I wish could be different. For one thing, it could have a wider sound characteristic, it’s centred and pristine yes, but this is where I believe the 25 watts have their limit; it isn’t that volume and intensity lack, it’s more the limitations of a more expansive soundstage. There’s no phono stage, only RCA connections, and for purists, the additional dBs from XLR are not present. Not including digital inputs will drive away some audiophiles. However, Margules set out to create a very high-end, pure-sounding amp, as well as a beautiful component, and that’s what they delivered: they set their sights on sound. 

The Margules I-240 at USD 7000 has to make a Sisyphean climb in the mountain of integrated amplifiers today. I would invite you to look for Margules at audio expos or go to your audio dealer and ask to listen to one. If you do this, I can imagine that the decision to pull the trigger will be easier. It was for me. This is a marvellous and beautiful integrated amplifier and is highly recommended. 

Speaking of numbers, thanks to the use of Japanese Nichicon filter capacitors, ELNA capacitors, German WIMA capacitors, and Japanese Sumida inductor, the V3 Mono is able to reach THD as low as 0,006%, SINAD of 101dB and an SNR as high as 123dB. Impressive values, helped by a four-layer PCB, further optimizing the work done by the manufacturer upstream.

Another nice feature of the Fosi Audio V3 Amp, is the use of swappable op-amps. If provided with two Texas Instruments NE5532 by default, the amp can also be fitted with chips like the Burson V7, the MUSES02 or even the classic Ti OPA2604.