Manual vs. Auto Bias


In considering new directions in which to take the evolution of my system, I have run into conflicting claims as to which results in less distortion...auto or manual biasing, according to what product(s) the so called expert manufactures and/or represents...(Surprise!) How about some input from average consumers like myself who have had more experience with one or both?
anjowin
I like a manual bias as it allows for fine adjustments to squeeze the last drop of performance from the tube and circuit.
I have auto bias. It sounds good and I barely know what bias is. I pay to hear the band, not to make the music.
My experience has been some amps are easy to bias some are not so easy. Check the instructions on how to bias the amp before buying anything. Personally I like to set the bias if the process is reasonably easy.
Anjowin,
I have a push-pull 100 watt amp(6550/KT88 tubes) that requires manual biasing(very simple to preform) that sounds very good. I also own an auto biasing 300b SET amp that`s the best sounding amp(without question) i`ve ever owned thus far.If a auto bias circuit (in theory) adds distortion, that has`nt been my experience at all.
I have one "auto bias" amp, a Cary SLI 50 and I think it sounds great. My other amp is a VAC PA100 which is a manual bias via LED's on the frt panel. It is very easy to bias. Which type of bias circuit is used is not a make or break deal for me. However, amps requiring manual bias that require removing panels and covers, which would be difficult and or dangerous to bias, are off my ownership list. Some amps in this category are models from ARC and Jadis.