Conversion to RCA
Hello. I’d like to add to my previous review. I modified the input to use RCA connections. I resoldered the resistors as specified in the instructions. You can use jumpers instead of resistors, since the resistors have zero resistance. The resistors are very small, so be careful when soldering (or have a professional do it). I soldered OPA1612 chips onto the empty pads. I didn't notice any difference in sound quality compared to the XLR connection. The next steps will be installing a volume control and VU meters, and moving the unit into a different case.

Excellent sounding amplifier with serious power and driving capabilities
Being a long-time audiophile and part-time audio reviewer I have owned or tested numerous power amplifiers of any kind and cost. I own the (unfortunately discontinued) Audiophonics AP300-S2503E that uses this particular power module, fed by a Mornsun LOF550-20B48 Power Supply Module. To cut the long story short, I prefer this one to my 3.500€ solid state, zero feedback, single ended, pure class A marvel PORFYRA AUDIO that I used to cherish. I also prefer it to my 2.676€ "gentle giant" Audiophonics HPA-DM750ET. Its sound is wide and full, smooth, fluid, very detailed, spacious and three dimensional, with beautiful textures and finesse but, at the same time, it is fast, dynamic and controlled that it never gets boring. You just can't find any real drawback. Have no doubts and don't be fooled by its moderate price, this is a serious power amp regardless of the price. And the best TI TPA3255 implementation that I have come across. Just partner it with the best power supply you can afford, like the aforementioned Mornsun LOF550-20B48 or the even more powerful SMPS800RS (both are sold by Audiophonics), to maximize its driving capability (it is stable at 2Ω loads, can give more than 400W peaks per channel if the power supply supports it). Also use serious hook-up wiring for the power and speaker connections, like the ELECAUDIO FC125TC or better. I also highly recommend the EIZZ EZ-303 speaker terminals (tellurium copper is by far the best sounding metal after solid silver).

3E Audio 260-2-29A
The module is made of very high quality. I connected a 36 volt 400 watt power supply to the power supply, but set the voltage to 38 volts. After working for more than 6 hours, the amplifier radiator is slightly warm. I'm happy with the sound, everything is in its place. A few comments (maybe the manufacturer will take into account) - it would be good if an XLR-RCA input switch and missing chips were installed. The delivery was very fast, thanks to Audiophonics.

3E AUDIO 260-2-29A PFFB
Bonjour,
Modèle recu avec 4 condos 80v 1200uf (Modèle en photo avec 4 condos 60v 1800 uf) . Upgrade ????
;)
Fonctionne bien. Les 2 Câbles XH 3, a remplacer (Avis perso)
Cordialement.

mejor que purifi
Tuve una PURIFI con la desastrosa SMPS hypex y sonaba estéril y enclenque. La devolví. -purifi con fuente de alimentación lineal hubiera sido perfecta sin embargo pero no se hacerlo porque es multivoltaje - . Encargué este módulo por sus buenas medidas aprebachando que la impedancia mínima de mis cajas no es demasiado baja -este no es estable a 2 ohm como purifi- pero como es un solo voltaje se le puede meter fácil un toroidal y una fuente no regulada lineal...resultado: con un previo realmente cálido/transparente como el perfecto Glasshouse TVC, la resolución es infinita el detalle el realismo , calida valvular sin ruido pero con cuerpo con grip emocionante ¡Mucho mejor que la típica Purifi o NCORE con SMPS hypex -probablemente con una SMPS Meanwell hubiera sido mucho mejor+! Brillante suena mejor -con un previo TVC - que la clase A