Mark Levinson No36s

Hi Guys
I have the chance to purchase a Mark Levinson No36s dac , i can not afford the more modern equipment but have read from reviews that it is still a very good dac , my main concern is with how reliable it would be ? as it would be 10-15 years old now , i guess i just want to see for myself what the M/L legendary sound is all about ! Many say that service can be a problem but would this be more of a case with a transport rather than a Dac as no optical replacement required ? How is the sound quality of the No36s ? I can not audition in store as i live in a rural location . Thanks