Those look like custom cabinets for the Seas A26 kit sold at Madisound. Fully optioned, the parts for these speakers are over $1,000. Yes: these are modern interpretation of the Dynaco A25. I owned a pair of A25XL’s (close to these in concept).
These speakers are no threat to Devore. They are likely about 88-89dB/1/w. However, they have no crossover on the woofer and impedance stays decently high through its entire range. It should be easy to drive. I could easily drive my Dynacos with a 6wpc Tripath amp.
This looks like it is the factory-recommended 1.5 cu ft enclosure. Once speakers get this size it starts to get more expensive to make and sell. Based on what we see $4,500 in this veneer is not unreasonable.