Started out with the TS-A75. Was blown away by the sound that the amplifier generated through my speakers . But I always wanted a tube amplifier as much as I enjoyed the sound of my TS-A75 . So I bit the bullet and ordered the TS 34 this is my first tube amp and I've never heard anything quite like it. The amp" speaks to the heart “ and reminds me of that Rush song from the album 2112 . Hundreds of years into the future a young man finds a guitar in a cave and strumming the strings he's totally blown away by the sound that it produces he wants to introduce it to the world. That’s how I feel at 64 ,Thomas has created this beautiful instrument and I'm hearing music as it is ment to sound for the first time. This baby is rock solid and will last me a life time. Maybe in a hundred years someone will find it in a cave, hook it up and marvel at the sound it produces. Thank you Mr Tan. Victor