Audiophilepure

https://www.enjoythemusic.com/superioraudio/equipment/0525/Trilogy_Audio_Systems_914_Preamplifier_994_Monoblock_Power_Amplifier_Review.htm

Hours (literally many) were spent trying to capture the essence of what this Trilogy 914 / 994 combo does, Even now I’m not sure my words have gone far enough. If I asked you to describe the color of a glass of red wine you could easily write a tome the size of War And Peace and still not cover everything. I feel here I’ve barely scratched the surface of how good this kit is. For the price, I think many who value a musically engaging experience plus an utterly simple and unfussy setup, the Triology Sound Systems 914 / 994 stereo system might not be beaten for quite some time. The amount of music I played through Trilogy Audio Systems’ 914 preamplifier and 994 monoblock amplifiers, plus the time I spent with each pair of loudspeakers connected, was partly because I wanted to make sure I did justice when reviewing these luxurious high-end audio products.

https://www.enjoythemusic.com/magazine/equipment/0425/Rogue_Audio_Sphinx_V3_Magnum_Hybrid_Stereo_Integrated_Amplifier_Review.htm

Now some clarity about the LRS with the Sphinx Magnum. After listening to the full impact of the Magnum with the Falcons, it became clearer to me that the Magnepan LRS needed more oomph to realize a larger presentation. I switched over to my reference amp, The Rogue Audio Pharaoh. Boom, full-scale, and solid tuneful bass. The Pharaoh has a monster power supply that can handle low sensitivity and 4-Ohm load speakers with more brute force, along with finesse. Of course, it is twice the price of the Sphinx Magnum.

The Falcons at 15 Ohms presented a friendlier load to the Sphinx Magnum. Voltage vs. Current. You could hear some of the tube-adjacent sound of the Sphinx Magnum coming through. Ok, it was getting late, so I opted to go for headphone listening so as not to disturb those who were sleeping upstairs. I wear headphones when doing radio shows and for listening to critical mixes of pre and mastered recordings. I was surprised by how nice sounding the headphone experience was on the Magnum. The MOSFET amp section makes for an easy and relaxing listening session. Oh yes, there was detail and the good things your ears beckon for.

https://stereonet.com/reviews/wiim-vibelink-amplifier-review

The Vibelink also has a Post-Filter Feedback (PFFB) circuit to minimise distortion and enhance clarity across different speaker loads, it is claimed. While affordable TPA3255-based amplifiers and ESS Sabre DACs abound, the WiiM distinguishes itself on several fronts. The unibody aluminium chassis is a premium touch and the switched-mode power supply is internal. Many competitors rely on chunky external power supply bricks, and some encounter overheating due to inadequate cooling.

WiiM’s fully passive cooling solution uses a PID thermal control circuit, a copper heat pipe and a large aluminium heatsink – PC assembly enthusiasts will feel right at home! During my listening tests, the Vibelink Amp reached a maximum of about 15 degrees C above ambient temperature after several days of continuous use. I didn’t trigger the amplifier protection circuit, so the cooling design definitely works. Also, the amplifier will power down after a period of inactivity, which is great in a world of rising energy costs.