Deloitte confirmed that there will be a further 735 redundancies, mostly from Comet's home delivery network.
It has already announced 330 redundancies at the Comet business, which had employed 6,611 people and operated 236 stores when it collapsed this month.
There have been sales at 27 stores in the Comet chain that are due to close. A further 14 outlets are also scheduled to shut down.
Deloitte is to cut 603 employees across Comet's home delivery network, which operates across 12 hubs in the UK.
The administrators have also ordered a further 132 employees to be made redundant from Comet's head office and central support functions.
The affected employees have already been informed by the administrator.
Whilst there have not yet been any redundancies of staff in Comet stores, Deloitte said that these will be 'inevitable' as there are 869 full-time and part-time employees at the 41 outlets earmarked for closure.
Chris Farrington, joint administrator, said that discussions are continuing with parties who "have expressed interest in parts of the business".
"However, it is unfortunately necessary to begin a store closure programme and to scale back the company's support functions," he added.
"While we will continue to do all we can to preserve jobs, we are working hard to put in place comprehensive support to help those employees who are made redundant during the administration.
"This support includes connecting people to prospective employers who are keen to offer roles to ex-Comet staff, and providing assistance and workshops to help with job hunting skills, such as CV and cover letter writing and interview skills, to enhance their chances of securing new employment.
"We are very grateful to the company's employees for their professionalism, loyalty and support at this difficult time and employees will of course continue to be paid for all the work they do while the company is in administration."
Deloitte also said that there would be some more generous discounts applied to products at Comet stores on Tuesday (November 20), after initial offers failed to ignite consumer interest.