SPRINGFIELD -- Calling the murders of three Pittsfield men filled with "depravity" and without "human dignity," a Hamden Superior Court judge on Monday sentenced Adam Lee Hall to three consecutive life sentences.

Judge C. Jeffrey Kinder said the crimes were unlike anything he had previously encountered in his career as a judge. Kinder said Hall preyed on the disabled -- two of the victims, David Glasser and Edward Frampton, had mental or developmental issues -- and surrounded himself with young women he was able to manipulate into doing his bidding.

He said over the course of a few years Glasser was stalked, intimidated, beaten, abducted and finally murdered and mutilated. His two friends were "abducted, stabbed and decapitated simply because they had the misfortune of being there when Mr. Glasser got abducted."

Hall repeatedly sought to obstruct justice by keeping Glasser from testifying, an act that "struck at the heart of our system of justice," the judge said.

The Peru resident was convicted on Friday on 15 of 19 charges, including three counts of first-degree murder for the slayings of Glasser, Frampton and Robert Chadwell. Several of the charges stem from two other incidents involving Glasser in 2009 and 2010.

He seemed to take the sentence in stride, showing little emotion throughout the proceedings. Hall, 36, and two other men allegedly kidnapped, tortured and then killed the three victims in August 2011 and buried the bodies in Becket. Glasser was allegedly killed to prevent him from testifying against Hall; Frampton and Chadwell were killed to eliminate any witnesses, prosecutors said.

Before the sentencing, Hall's attorney, Alan J. Black, told the judge that his client has family who "still love and care for him," and that Hall has always been courteous to him and to his staff. He said Hall has a minimal criminal record and should be given life without parole, with all other sentences to be served concurrently.

Berkshire District Attorney David F. Capeless argued Hall's "crimes were brutal, hateful assaults on three defenseless men" with "limitations," but men who were loved nonetheless.

"To assault, kidnap and murder anyone is a crime, to do so to these men is horrible," the DA told the court. "The acts are loathsome, depraved and barbaric."

Capeless said Hall should be shown no more mercy than he showed his victims, and he asked for three life sentences without parole and another life sentence for the armed robbery of Glasser plus additional time on several other charges. Erin Forbush, Frampton's social worker, told the court she was fortunate to know both Frampton and Glasser and misses them and Frampton's quirky sense of humor.

Forbush said Frampton was an advocate for people with disabilities.

"He turned bad things in his life into good things," she said.

Massachusetts State Police Trooper William Scott also gave an emotional statement on behalf of Glasser before sentencing, telling the court that Glasser loved to play drums and spent his time helping others, giving them rides or moving furniture.

Scott said after police were able to get Glasser his beloved truck back following its theft by Hall, Glasser offered to take the troopers out for a hamburger.

"I implore you to consider David Glasser's life and what it represented," he told the court.

Kinder sentenced Hall to life without parole for the murder of Glasser followed by two more life-without-parole sentences on the murders of Chadwell and Frampton. Hall also will have to serve another 12 to 15 years on an armed robbery charge from the 2009 case, followed by another 8- to 10-year sentence on a 2010 kidnapping conviction and another 5- to 7-year term for possession of a firearm in the commission of a felony from the 2010 case for a total of 25 to 42 years after the three life sentences.

Hall's two co-defendants, David Chalue, 46, of North Adams, and Caius Veiovis, 32, of Pittsfield, remain in jail without bail; Chalue's trial is scheduled to begin April 15. Veiovis' trial will follow, possibly in June.

"Now that the judge has imposed this sentence there is a sense that justice really can be achieved in our courts," Capeless said afterward. "This was an attack, not just on three vulnerable victims, but also upon our whole system of justice. It was important for the judge to impose the consecutive sentences."

Ashleye Hall (no relation to the defendant), the 26-year-old daughter of Robert Chadwell, said her father was loved by her three children whom he would often babysit. She said her children, family and workmates helped get her through this terrible time.

She said when the bodies were discovered, she was at first unable to register what had happened "because who could do something like that."

She said she feels hatred toward Adam Lee Hall and she was sickened by his "smirking" during the trial.

Carol Chadwell Smith, Robert Chadwell's sister, said after the verdict she expected to be "uplifted" but just feels exhausted. Even so, she felt the sentence was appropriate.

"Life in prison without parole is a good thing. Yes, some people might say he deserved more. In the beginning I felt that way, but now ... I don't wish this man any harm," she said. "He's a monster, but still in a sense I can't bring myself to wish harm on him."

Smith believes there is "something that is never going to be filled following the death of her brother and despite the trial and its outcome.

"There are questions I have that only [Hall] can answer. He's not going to do that, just like he never apologized because he's not sorry for what he did. The look on his face throughout this whole thing. There was no remorse there; none," she said. "He sat there smirking, acting like he was at a photo shoot when the cameras were clicking. Who does that? Somebody without a heart and a soul."