So Drew I have a question. I read that review you posted for fun (don't usually need to read reviews for something you already own after all), and the author describes volume behavior that is very unlike what I hear from my IHA-1. I postulated a while back in this forum that the logical way for Dennis to fix the amp's lack of gain/volume would be to change the configuration of the 6SN7 tubes from being parallel single gain stage to actually being two separate gain stages. Can you give any confirmation that such a design change took place? Because if it did that represents a pretty significant design change that affects the amps performance and it means all the advice people like me give out about this amp might not be accurate for the current design revision of the amp. Not only would the amp have much more volume, but it's ability to drive some types of loads would be different too. So older impressions of the amp might no longer be applicable for current potential buyers.