I have owned several Audio Research preamps (and amps) in the past, but have owned the Zesto preamp for the past 4 years. I really enjoy the sound, the looks and the reliability of the Zesto. It is very detailed while remaining very musical and easy to listen to for long periods of time. I especially enjoy the dense tonal colors and big, 3 dimensional soundstage. It responds well to tube rolling, power cord changes and fuse upgrades.
The remote is fairly utilitarian only offering volume, mute and mono functions, but that's all I need anyway.
In 4 years I haven't had one issue with the unit, which I am sorry to say wasn't the case with previous pieces of tube gear I have owned.
I have no experience with the other two brands you mentioned.
The remote is fairly utilitarian only offering volume, mute and mono functions, but that's all I need anyway.
In 4 years I haven't had one issue with the unit, which I am sorry to say wasn't the case with previous pieces of tube gear I have owned.
I have no experience with the other two brands you mentioned.