I vote for the Cayin for a little more power and extention, the Almarro 318 B for a slightly richer more laid back midrange.
The if your Energy speakers have an efficiency rating above 90 ( have never heard them), the Almarro will probably be better liked by a classical music lover. The sound of the Almarro seems to be positioned between overly smooth (to me) older Conrad Johnson gear and the Cayin (which is also warm, yet more extended than the Almarro and a bit more powerful - although not quit as wonderfully warm and textured in the midrange as the Almarro).
By the way, if you get an Almarro and can come up with the cash, Mullard ECC35 (6SL7) and ECC34/ECC32/ECC33 (6SN7) tubes are a great combo.
The if your Energy speakers have an efficiency rating above 90 ( have never heard them), the Almarro will probably be better liked by a classical music lover. The sound of the Almarro seems to be positioned between overly smooth (to me) older Conrad Johnson gear and the Cayin (which is also warm, yet more extended than the Almarro and a bit more powerful - although not quit as wonderfully warm and textured in the midrange as the Almarro).
By the way, if you get an Almarro and can come up with the cash, Mullard ECC35 (6SL7) and ECC34/ECC32/ECC33 (6SN7) tubes are a great combo.