A1 is a lovely amp. I prefer it over Meridian Prime and Naim V1.
No matter how long my listening sessions are , i always want to listen to this amp more and more.
This amp is demanding about cables and source , but once your setup is on pair with A1 nothing is in the way of music
its so transparent!
i saw once a guy running A1 with yamaha cd player, and T1. He told me he is not impressed with A1, sound was not engaging...
He bought marantz dac/hp amp combo instead and was happy. If only he heard A1 with my hegel hd 20 !! breathtaking with all genders, all headphones...
I think problem is many "audiophiles" are inexperienced and looking to be impressed by all this amps that color sound one way or another, of course you keep telling yourself that you are after neutral natural sound signature
but once theres an amp that doesn't take anything from sound and doesn't bring anything to sound , its not engaging 
Only after you try all this gear that try to impress you with fireworks and after playing with it for a while you get bored, only then you will look for neutrality.
And thats what A1 is - neutral amp
Lovely amp!
No matter how long my listening sessions are , i always want to listen to this amp more and more.
This amp is demanding about cables and source , but once your setup is on pair with A1 nothing is in the way of music

i saw once a guy running A1 with yamaha cd player, and T1. He told me he is not impressed with A1, sound was not engaging...
He bought marantz dac/hp amp combo instead and was happy. If only he heard A1 with my hegel hd 20 !! breathtaking with all genders, all headphones...
I think problem is many "audiophiles" are inexperienced and looking to be impressed by all this amps that color sound one way or another, of course you keep telling yourself that you are after neutral natural sound signature

Only after you try all this gear that try to impress you with fireworks and after playing with it for a while you get bored, only then you will look for neutrality.
And thats what A1 is - neutral amp

Lovely amp!