The amplifier circuitry in the receiver is distorting the sound. I am very familiar with that music, and it is very demanding to reproduce without distortion. Setting the treble to +6DB is a sure way to make the problem much worse. Turn it down to 0.
Your speakers might be part of the problem too, but only in the sense that your current receiver cannot drive them properly. They need more peak current than your receiver can deliver, and you are experiencing distortion as a result when the amplifier runs out of current and goes belly-up for an instant. The E80 speakers can sound very good with the right receiver.
Getting a receiver that has a better power supply and amplifiers will get rid of 90% of the problem IMO. My experience has been that Yamaha's receivers have some of the worst-sounding amplifiers you can buy. You seem to be experiencing that. Yamaha's power ratings, by the way, are deceptive and ridiculous; ignore them.
I recommend the Harman-Kardon 1650, which IMO is probably the best-sounding one you can get for under $500. It will drive your speakers well.
It will be a huge improvement over what you have IMO.
Edited by commsysman - 4/25/13 at 8:21am
Originally Posted by Marlon98
Hello, I have experienced an issue where I will be listening to a song which many dynamics, lets say "Bohemian Rhapsody". When the lead guitar kicks in with its high notes, I hear a muted high pitch noise such as a screech as If either the speaker or the receiver isn't able to produce that sound. WHich maight be the cause? Also, at parts, the music sounds to mixed together and the instruments have no headroom. I am running a very cheap setup. JBL E80's. Yamaha RX V2090 , with the Treble set to 6+ dB. Might be the cause. The volume I'm playing it isn't loud also, it is about 50 - 60 dB. I'm feeding my receiver with an Asus Xonar Essence STX from my computer using FLAC files.