I dont think its a shame that manufacturers 'tweak' the sound to make products sound good - its a blessed relief.
Speakers for example that are engineered to have a flat response, DO sound boring IMHO. I wouldnt give them house room.
If my Meridian transport has a slight mid-band tweak and I prefer to listen to the result, why is that anything other than a good thing? Should I swap it for a more accurate product that I enjoy less to keep forum members happy?
Is 'tube dude's ' amplifier a valve amp by the way or solid state? I would be interested to know..