I had this experience with a highly regarded amplifier.Although this horse is seemingly dead, I wanted to share something from my recent experience before you shovel in the mud and close it off forever.
I did a home demo of 3 speakers in the recent past using 2 different amplifiers. What you read on the forums / or specs vs what you really hear are very different.Your room, your preferences, your music, the actual sound vs what you thought it would be. Please audition before you buy anything. One of the speakers is a multi award winning one. Extremely transparent and resolving. Sounds fantastic with audiophile recordings but sounds bright with half my actual music. Imagine if you buy that online!
I found myself listening to a very limited number of albums (essentially a playlist) as it revealed the shortcomings of poor recordings ruthlessly. Over a few weeks of this I started wondering about my choice of amplifier. This feeling got “amplified” into harsher emotions till I actually developed a dislike towards this inanimate object.
I sold it (much less than what I paid for it) with a sense of relief. I did however insist that the buyer (who wanted it couriered) come and listen to it first., but in a strange twist in the tale this amplifier made me curious about the “tubey” sound and thus discover the sound quality and characteristics that brings me most joy.