Cryptic crossword No 3,400

Across

1. Knight, barely noble (4)
2. Servant built for radio (4)
3. Try comprehending latest from Taylor Swift, say (4)
4. Passage from old pamphlet (7)
5. Retired worker traverses state for Greek restaurant (7)
6. Irrational queen enlists quiet musician (5)
7. Scottish entertainer just a bit dear (3)
8. A, B, C, D, F, or G? (4)
9. A French detective made a mistake, finding Still Game (10)
10. Small, pallid swimmer (4)
11. Ego bruised over huge honker (5)
12. Winger's tenor version of True Love impresses date (6,4)
13. Phone engineer around noon (4)
14. Peer's wife exits low road (4)
15. Better dash! Opportunity about to disappear (7)
16. Paint casual worker with time (7)
17. Round, round, round gem (4)

Down

1. Plot involved danger (6)
2. Notice opening time for Christmas shopping? (6)
3. Opposed to artificial intelligence penning books (4)
4. Superb laptop (not charged), somewhat reduced (3-5)
5. Game piece with raised line (9)
6. Pet peeve: being regularly struck – with this? (4)
7. Lara dug around, bit by bit (7)
8. Civic centre plugs stylish Christmas play (8)
9. Until that time, her OTT hit played (9)
10. Book that may be turned down (6)
11. I turn green preceding dizziness (7)
12. Conclusion: hedgehog, frog, and dog all do it (6)
13. Welsh icon lost – yikes! (4)
14. Man on board with occupying vessel (4)
15. Charlie, Albert, and Heather's vocation (7)
16. Spirit medium visits the German musician (7)