You need to get some NOS tubes. I have a MicroZOTL and I had the same problem with tube glare. The manufacturers cannot use NOS tubes in a production unit, because there is no guarantee of availability of the right tubes at any given time, and the price fluctuates too much.
Talk to A'gon member Tubegroover. He has a 270 and has some experience with NOS in it.
When I put Mullard 12AT7's and Sylvania 6SN7's in my MicroZOTL the glare was gone and overall sound and detail was much improved.
For the best bass control, use the Normal Feedback setting. It provides the lowest output impedance for best bass.
And trying different cables is a good idea, because, as we all know, cables are very synergy dependent on the amp and other components. When you change an amp, it is likely that cable changes may be in order also.
It is my opinion that the NOS tubes will give the improvements that you want. I know that it is a bitch to have to get NOS tubes when you have just bought a new amp, but that's the name of the game. I have come to expect to have to do that. They just can't put them into the amp for the reasons I described above. There is a limited supply of NOS and they are getting rarer, and more expensive, and eventually they will dry up altogether.
Talk to A'gon member Tubegroover. He has a 270 and has some experience with NOS in it.
When I put Mullard 12AT7's and Sylvania 6SN7's in my MicroZOTL the glare was gone and overall sound and detail was much improved.
For the best bass control, use the Normal Feedback setting. It provides the lowest output impedance for best bass.
And trying different cables is a good idea, because, as we all know, cables are very synergy dependent on the amp and other components. When you change an amp, it is likely that cable changes may be in order also.
It is my opinion that the NOS tubes will give the improvements that you want. I know that it is a bitch to have to get NOS tubes when you have just bought a new amp, but that's the name of the game. I have come to expect to have to do that. They just can't put them into the amp for the reasons I described above. There is a limited supply of NOS and they are getting rarer, and more expensive, and eventually they will dry up altogether.