The most common and most likely answer to this crossword clue is the 6 letter word STRAIT
I've seen this crossword clue in Financial Times
S
T
R
A
I
T
More clues leading to the result STRAIT
- It supports the setting up of arts channel
- Channel surfing's primary feature
- Dictator’s honest sound
- Sound not diluted by speakers
- Channel not wiggling around by the sound of it
- Soprano with characteristic sound
- Narrow part said to be in line
- Sound’s singular feature
- Sound level for listeners
- Narrow passage in good order, we’re told
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does STRAIT mean?
STRAIT noun- A narrow channel of water connecting two larger bodies of water.
- A narrow pass, passage or street.
- A neck of land; an isthmus.
- (often in the plural) A difficult position.
- To confine; put to difficulties.
- To tighten.
- Narrow; restricted as to space or room; close.
- Righteous, strict.
- Tight; close; tight-fitting.
- Close; intimate; near; familiar.
- Difficult; distressful.
- Parsimonious; stingy; mean.
- Strictly; rigorously.