This is pretty much exactly what I was responding. It's all rather subjective anyway...one mans ideal combination is another's one-tube-short of a circus. Sure, there's bound to be some general consensus in users, but if you don't fall under that preference it's obviously not a guideline for you to follow. There is no right or wrong.
I use a front end component, the Modwright Transporter, which is VERY versatile to tube choice, and VERY sensitive to tube rolling (changes make a profound difference). Dan (Wright) deliberately designed the analog output circuit to be very versatile in this respect and is a tube-roller's dream in terms of shaping the sound to how you like it. The Audiocircle thread on this subject is currently 53 pages and is a testament to how great an effect tubes can have on a front-end output circuit. The most recent development has been Octal adapters to allow use of other tubes like the 6SN7 in the 8-pin output tube position (the adapters are made available by Wayne at the Boulder Cable Company). I can tell you from my own experience with this impressive front end that just changing the rectifier tube has a profound effect on the sound (5ar4, 5u4g, GZ32, GZ37, etc.). As I indicated in my previous post, I find the closer the tube is to the front end, the more effect it will likely have...changing the rectifier in the MW Transporter has a far more profound effect than changing a rectifier in any tube-rectified amp I've owned.
Are you suggesting that manufacturers build their equipment with circuitry to accept whichever tube you might have a fancy for trying, which would be very interesting, if it were possible!
I use a front end component, the Modwright Transporter, which is VERY versatile to tube choice, and VERY sensitive to tube rolling (changes make a profound difference). Dan (Wright) deliberately designed the analog output circuit to be very versatile in this respect and is a tube-roller's dream in terms of shaping the sound to how you like it. The Audiocircle thread on this subject is currently 53 pages and is a testament to how great an effect tubes can have on a front-end output circuit. The most recent development has been Octal adapters to allow use of other tubes like the 6SN7 in the 8-pin output tube position (the adapters are made available by Wayne at the Boulder Cable Company). I can tell you from my own experience with this impressive front end that just changing the rectifier tube has a profound effect on the sound (5ar4, 5u4g, GZ32, GZ37, etc.). As I indicated in my previous post, I find the closer the tube is to the front end, the more effect it will likely have...changing the rectifier in the MW Transporter has a far more profound effect than changing a rectifier in any tube-rectified amp I've owned.