Newbee, good points. The midrange is currently on target with my preferences - lush and detailed. I'm looking for more mid and upper bass definition, more lower bass impact and more extended (sparkling?) highs.
The McIntosh-branded Electro Harmonix tubes that came stock with the 275 were nothing special and developed the "blue pulsating glow of death" after less than 500 hours. So, durability is an issue.
The McIntosh-branded Electro Harmonix tubes that came stock with the 275 were nothing special and developed the "blue pulsating glow of death" after less than 500 hours. So, durability is an issue.