The Huxley family has said the 30-year minimum sentence handed down to killer Daniel Jack Kelsall was "not long enough" in an emotion-charged exit from court today.

Kelsall was sentenced to a maximum of 40 years in prison with a non-parole period of 30 years today for the 2013 stabbing murder of Sydney man Morgan Huxley.

The Huxleys made just the one comment as they left the court, saying they wanted Kelsall in jail for longer.

Kelsall's family was also present and spoke to media briefly as they left court following the sentencing.

"It's a horrendous and tragic situation and we really feel for the Huxleys," Kelsall's father said.

Justice Robert Allan Hulme said Kelsall was "not at all remorseful" about his crime.

Morgan Huxley was murdered in September 2013.

"This is a most chilling case of murder," he said.

Morgan Huxley's family leaves court. (9NEWS)

"Whether the offender killed for the thrill of it ... or as the result of a fantasy or obsession, I am unable to say.

"It must have been the doing of a very disturbed individual."

Judge Hulme said Kelsall had confessed to previous doctors repeated urges to kill a stranger with a knife "for the thrill of it".

He said the severe sentence was warranted despite Kelsall's young age and lack of criminal record, given the seriousness of the murder.

"As (Kelsall is) a young man of high intelligence and a history of deceit, it is my opinion that he remains dangerous and accordingly, the risk of future dangerousness runs high," he said.

Daniel Kelsall during interrogation. (9NEWS)

Kelsall was found guilty last month of indecently assaulting and murdering 31-year-old Mr Huxley, who was killed in his Neutral Bay apartment in Sydney early on September 8, 2013.

The kitchen hand followed Mr Huxley home that night from the Oaks Hotel in Neutral Bay, stabbed him more than 20 times in the back, neck and head and indecently assaulted him.

Kelsall claimed he and Mr Huxley had been engaging in consensual sex when a random attacker had entered the room, killed Mr Huxley and fled.

Judge Hulme said it was "little wonder" the jury had rejected this account.

The prosecution earlier requested a life sentence, but Judge Hulme said he was not convinced this crime was of the worst category.

Kelsall, wearing a dark suit, earlier appeared calm as Mr Huxley’s family outlined how his loss had affected them.

Mr Huxley's mother Deirdre asked how she could possibly move on "when the monster who took his life still breathes, eats and sleeps."

Killer Daniel Jack Kelsall is due to be sentenced.

His brother Oliver said Mr Huxley had been his hero.

"I'm sorry I didn't protect you from Kelsall," he said.

Sister Tiffany said Kelsall's calculated lies provoked unbearable anger throughout the trial.

Father Allan said his son had been taken away from the family in a "horrific" way.