I have the Seas A26 and had the Harbeth shl5plus side by side.
The Harbeth mids are quite a bit better resolution wise, but the shl5plus treble grated on me, while the A26 is smooth in the treble. the SHL5plus also have more punchy bass and goes lower, but while the A26 bass is not as punchy, I felt the shl5plus bass seem to impart its own character to everything, while the A26 seem a bit more neutral, yet less punchy and goes definitely less low (no sub FREQ)
The A26 are fun, not clinical at all and musical, but it lacks the ultimate resolution both in terms of midrange details and imaging capabilities. The A26 can also go pretty loud without sounding compressed
Id say they are a good bargain but the relative lack of midrange detail vs Harbeth mids make the Seas A26 the ultimate secondary speaker. I'll move on to ATC active or back to Harbeth next, or something else i prefer for my main system.
