The IP-2700 series of power supplies was introduced in 1975. The series included four different types which each could be ordered as kit or assembled, and with analog or digital display:
- 60V 1,5A IP-2700: kit, analog - SP-2700: assembled, analog - IP-2701: kit, digital - SP-2701: assembled, digital
- 30V 3A IP-2710: kit, analog - SP-2710: assembled, analog - IP-2711: kit, digital - SP-2711: assembled, digital
- 15V 5A IP-2720: kit, analog - SP-2720: assembled, analog - IP-2721: kit, digital - SP-2721: assembled, digital
- 7.5V 10A IP-2730: kit, analog - SP-2730: assembled, analog - IP-2731: kit, digital - SP-2731: assembled, digital
This kit version IP-2721 with digital display was produced just from 1975 till 1976.