Crystal clear and powerful sound!!! Its only drawback is that it makes a bit more noise when in operation!!!! If you are close to it and at low volume, the music sounds a bit thin!!! Otherwise, it's worth every penny!!!!

Well, the amplifier of 130E, 5-channel with many functions, many controls, lamps, SC sticks, internet, radio, etc. etc. Don't expect to hear any Tsakiridis or even Rotel. HOWEVER! with a pair of bookshelf speakers of 100-200E you will hear a much higher quality sound than most PC speakers out there. Now, as for details such as THD, Impedance, S n/r and other characteristics, I couldn't find them anywhere no matter where I looked. Tests I did. I don't care about 5.1 or 7.1 sound so I only tried stereo and active subwoofer. I used either the integrated card on the motherboard or a soundblaster XAE-5 plus. Of course, I used very good speakers because I had them in a home cinema that I no longer use. Jamo 120 surround dipole 3-way speakers, they were used as main L-R. Active subwoofer Rel Strata II. Good and expensive speakers in their time. I listened to many genres of music, speeches, natural and technical sounds, movies, games. I wasn't disappointed anywhere. Clean and full sound in all frequencies. I have spent a lot of money on surround speakers, I have never heard this quality of sound, at least from speakers up to 600E that I have tried. The amplifier will do a great job with 2 easy-to-drive 2-way 8Ω speakers (leave the 4Ω ones, they are tricky, they require a lot of power and hefty amplifiers). Of course, if the treble/bass controls are at maximum and the volume is above 70-80%, it starts to distort and hiss. But we want to hear sound, not noise. For me, it's worth the 130E both for its functions and the sound quality it provides