Hi Mikedimitrov,
I don't have any experience with the Leben, but I've had an Almarro 318A for the past few years -- and I'm embarrassingly fond of it. I find the chassis attractive and the tube complement really terrific; it's well-made, and of course I'm in love with how it sounds: the sweetness of the mids is absolutely charming to me. I've found the 6C33C tubes to be stable, in my case -- haven't had any issues with the bias -- and tube-rolling with the 6sn7 and 6sl7 has been a treat, as the amp seems quite responsive to changes in both.
My speakers are a little under-fed by this sweet little amp, so I miss out on a little bit of coherence and musicality in the lower frequencies -- but overall I'm happy as a clam.
Best of luck as you explore; sounds like you've got two great options on the table.
Betsy
I don't have any experience with the Leben, but I've had an Almarro 318A for the past few years -- and I'm embarrassingly fond of it. I find the chassis attractive and the tube complement really terrific; it's well-made, and of course I'm in love with how it sounds: the sweetness of the mids is absolutely charming to me. I've found the 6C33C tubes to be stable, in my case -- haven't had any issues with the bias -- and tube-rolling with the 6sn7 and 6sl7 has been a treat, as the amp seems quite responsive to changes in both.
My speakers are a little under-fed by this sweet little amp, so I miss out on a little bit of coherence and musicality in the lower frequencies -- but overall I'm happy as a clam.
Best of luck as you explore; sounds like you've got two great options on the table.
Betsy