Buskers who persistently play over-loud music will have their permits revoked by Dublin City Council.
In April, the council introduced a system whereby buskers had to apply for permits to perform on the streets and in other public areas.
This was seen as a way of dealing with complaints from passers-by and businesses who were growing increasingly annoyed about amplified music being played for hours on end.
Under the permit system, buskers must register with the council for a nominal charge and agree to a code of practice that specifies they cannot play in one place for more than two hours.
They also cannot exceed sound limits of 80 decibels, or 75 decibels in the Temple Bar area.
Buskers pay €30 each for a permit, or €60 if they are using amplifiers.
"There are around 200 buskers who have permits and the system is working quite well," said Brendan Kenny, the assistant chief executive of Dublin City Council.
"It is much easier to patrol now, and we have staff who measure sound output and follow up on complaints.
"So far one person has had their permit revoked but four or five others face the same decision in the Grafton Street area for persistent breaches of the codes.
"This is for playing music louder than allowed. We have given everyone a few chances and there are fines when breaches occur, but clearly when a person keeps breaching the rules and the fine is not a deterrent there is only one course of action and that is to remove the permit.
"We try to be as fair as possible, but the system was introduced in April for a reason and we have to be fair to members of the public and traders too."
Mr Kenny said that when council staff went to revoke the permit from the first busker to lose it he tore it up in front of their faces.
Buskers now have to display their permits openly either on their person or in a guitar case or similar item.