I agree with the comments others have offered and would look at the source. If the source seemed nice, or better if you are familiar with the source, perhaps the B22 is simply not your cup of tea. Theres nothing wrong with that.
One of the worst things about meets is that its often quite hard to hear an amp on a source you are familiar with. Reducing/eliminating variables can be tricky.
Originally Posted by FallenAngel
Time for you to hear another Beta22 off a good source, with good quality music and with good headphones. Also, as those Hifiman planar headphones are EXTREMELY inefficient, a using low gain won't be too much fun
If the headphones/speakers are playing at your desired volume level and the volume knob is not allllll the way up against the maximum volume level there is enough gain. If you have never spun the volume knob all the way up with your least efficient headphones there is too much gain. Considering gain-bandwidth-products, the fact that random noise in op-amps generally increases as gain increases, and how normal resistive/wasteful attenuators work having your gain set a little on the low side is generally better than a little on the high side.
Whether my standard of "enough" and "too much" gain applies under meet conditions where even the best of us listen a decent bit louder than we do at home is a bit of a debatable point.